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BMW Engine Parts

Turner Motorsport has everything you need to upgrade your BMW through our stages of performance or to keep your car in peak condition with our range of the latest in proven OEM cooling parts. Upgrade your cooling system and engine performance with the selections below to give your BMW a performance and reliability advantage.

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ARP - Corporate Logo
T#:2206
Part#: 201-6102
In Stock
$ 119.99

This product was last offered at the strikethrough price on
10-01-2026

$ 116.99 USD
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$ 116.99 USD
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Set of 12 ProSeries ARP2000 connecting rod bolts for the Euro-spec M3 engine. Made by ARP, the world leader in fastener technology. The best rod bolts available for the Euro S50 and S54. Ideal for ultra high performance, racing & forced induction applications. Each bolt is made of ARP2000 material, which exceeds the strength of 8740 Chrome Moly, and is able to achieve clamp load at 220,000psi. ARP2000 fasteners are used widely in professional motorsport and drag racing as an upgrade from 8740 Chrome Moly in both steel and aluminum rods.

This set replaces the factory BMW Euro S50B30 and B32 rod bolts with part number 11-24-1-317-184 (11241317184) and 11-24-1-405-890 (11241405890). It's also used for S54 engines with stock M10 sized rod bolts, which were used from February 2003 production and later. It was also used in earlier engines that had connecting rods replaced. For these 2001-2003 models there is no easy way to check if the rods were replaced, except by checking the rod bolt diameter. If your car has the earlier M11 sized bolt, use ARP kit #201-6103 . Before opening the ARP kit, we recommend that you check your existing rod bolt size as BMW was not consistent with their applications. ARP bolts are not returnable if the package has been open.

ARP is a company that prides itself on performance and durability, no matter the application. Offering the finest engine hardware money can buy is the driving initiative at ARP and this is evidenced by the staggering amount of satisfied customers and race teams the world over.

These ARP connecting rod bolts fit the following BMWs:
1993-1999 E36 BMW Euro M3
2001-2/2003 E46 M3 coupe / convertible*
2/2003-2006 E46 M3 coupe / convertible
2001-2002 MZ3 M Roadster & M Coupe*
2006-2008 MZ4 M Roadster & M Coupe
* - these engines could have either M10 or M11 sized bolts. If the rods and rod bearings were replaced under recall by BMW it should have the newer M10 bolts and this is the correct ARP set to order.
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ARP - Corporate Logo
T#:3315
Part#: 201-6303
In Stock
$ 212.99

This product was last offered at the strikethrough price on
10-12-2026

$ 194.99 USD
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$ 194.99 USD
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Set of 12 ProSeries connecting rod bolts, made by ARP -- the world leader in fastener technology. Each bolt is made of ARP2000 material, which exceeds the strength of 8740 Chrome Moly, and is able to achieve clamp load at 220,000psi. ARP2000 fasteners are used widely in motorsport and drag racing as an upgrade from 8740 Chrome Moly in both steel and aluminum rods. These are simply the best connecting rod bolts available, making them ideal for ultra high performance, racing and forced induction applications.

This set replaces the 47mm length factory BMW rod bolts with part number 11-24-7-589-671 (11247589671) Check applications before ordering! Opened ARP bolt kits are not
returnable.

ARP is a company that prides itself on performance and durability, no matter the application. Offering the finest engine hardware money can buy is the driving initiative at ARP and this is evidenced by the staggering amount of satisfied customers and race teams the world over.

This item fits the following BMWs:
1999-2005 E46 BMW 328i 328ci 330i 330ci 330xi
2001-2003 E39 BMW 530i
2004-2005 E60 BMW 530i
2004-2006 E83 BMW X3 3.0i
2000-2006 E53 BMW X5 3.0i
1997-2002 Z3 BMW Z3 3.0i
2003-2005 Z4 BMW Z4 3.0i
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ARP - Corporate Logo
T#:3606
Part#: 201-4302
In Stock
19% off MSRP $ 295.92

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 240.99 USD
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19% off MSRP
$ 295.92

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 240.99 USD
Free Shipping
Virtually every top professional BMW engine builder relies on ARP Pro Series head studs. ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Each stud is heat-treated to 200,000 psi, ensuring complete heat penetration. ARP studs are threaded after heat-treat, which gives them 1000% (that's ten times!) better fatigue strength than studs threaded prior to heat-treat. Threading the studs after heat-treating is more difficult and costly (as it's harder on tooling) but the results are well worth the effort. These simply are the best head studs we've found for the E36 6 cylinder engines, and we highly recommend them in both the racing and forced induction arena. (Due to the additional clamping force between the head and block, these are IDEAL for turbo charging and supercharging!)

Converting from the factory BMW head bolts to head studs makes it much easier to assemble an engine, especially a racing powerplant which must be serviced frequently (and quickly!), and also ensures proper alignment of the head and gasket. Head studs also provide more accurate and consistent torque loading. Here's why: When you use bolts to secure the head, the fastener is actually being "twisted" while it's being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A head stud should be installed in a "relaxed" mode -- never crank it in tightly using a jammed nut. If everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. An information sheet is provided with each set. Kit includes everything pictured -- 14 head bolts, washers, bolts and assembly lubricant.

ARP is a company that prides itself on performance and durability, no matter the application. Offering the finest engine hardware money can buy is the driving initiative at ARP and this is evidenced by the staggering amount of satisfied customers and race teams the world over.

These head studs fit the following BMWs/engines (steel block only)
1992-1995 M50 6 cylinder including 325i, 325is and 525i
1996-1999 M52 6 cylinder including 328i, 328is, 323is, 528i
1995-1995 S50US 3.0 liter including 1995 M3 (US only)
1996-1999 S52US 3.2 liter including 1996-1999 M3 (US) and MZ3
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Precision Raceworks - Corporate Logo
T#:1331979
Part#: 601-0176
In Stock
$ 419.99 USD
Free Shipping
$ 419.99 USD
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When upgrading your turbos or increasing your BMW's power potential, it's important not to overlook your fuel pump. Both low and high-pressure fuel pumps can only flow so much fuel, limiting power potential regardless of turbo size or other power adders, especially when running an ethanol blend. Upgrade your BMW fuel pump with Precision Raceworks' Low-Pressure Bucketed Fuel Pump Kits. Precision's low-pressure fuel pumps are designed to flow significantly more fuel than your BMW's stock system, ideal for customers who are upgrading their vehicles or plan to run blended fuel or E85 alone! This is a true plug-and-play solution that anyone can install in their home garage and start taking advantage of the benefits right away. Precision Raceworks' Stage 2 bucketed fuel pump kit includes a genuine Walbro 450 (F90000274) fuel pump, capable of supporting up to 575whp on 93 octane pump gas or 500whp on 100% E85! In order to prevent having to send in your fuel pump, each of Precision Raceworks' kits includes thorough instructions and all of the items required to assemble your kit at home. This prevents delays in shipping, potential damage to your stock fuel pump housing, and reduces assembly costs to keep prices low. It also improves installation as there is no guesswork on engagement and sealing of o-ring or complications and risks of tightening clamps that can poke holes in critical plastic components nearby. While all bucketless fuel pumps flow .2gpm more than a bucket design that retains the venturi, it comes at a cost. Bucketless pumps should not be driven on tanks lower than 1/4 full and should not be used for road course racing. This is not a disadvantage of only bucketless designs, but also a disadvantage for any bucket design which deletes the venturi. If you do not plan on road course or drag racing (not street racing) and are responsible at maintaining 1/4 tank of fuel during spirited driving, bucketless pumps can be a cheaper alternative for you.
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ARP - Corporate Logo
T#:2434
Part#: 201-6001
In Stock at Vendor
6% off MSRP $ 570.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 533.99 USD
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6% off MSRP
$ 570.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 533.99 USD
Free Shipping
NEW & REVISED!!! ARP has released a new version of their race-grade M3 connecting rod bolts and its better than ever before. If you're replacing your rod bearings these rod bolts are far superior to standard the OE BMW fasteners in terms of durability and ability to withstand stresses. This set of rod bolts is made specifically for the S65 4.0 liter V8, as found in the 2008-2013 M3 and replaces the previous ARP kit part number RBK_S65.
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ARP - Corporate Logo
T#:2208
Part#: 201-5000
In Stock
$ 169.99 USD
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$ 169.99 USD
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This ARP main stud set for the 24 valves M50-based 6 cylinder engines (including M50, M52, S50US and S52US) and eliminates main cap walk and fretting, as well as protects the threads in your engine block. Each stud is made using the best materials, process, design and engineering, which exceeds even the most stringent racing and aerospace specifications. This main stud kit includes aerospace quality nuts. The studs are manufactured from 8740 chrome moly steel, heat-treated in-house to 190,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others. On the E30 M3, there's no reason to settle for anything less than the best, which is why we carry and use ARP fasteners and studs on our own BMW race cars. ARP is a company that prides itself on performance and durability, no matter the application. Offering the finest engine hardware money can buy is the driving initiative at ARP and this is evidenced by the staggering amount of satisfied customers and race teams the world over. *Does not include washers*
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Precision Raceworks - Corporate Logo
T#:37757295
Part#: 601-0240
In Stock
$ 89.99 USD
Free Shipping on orders $49 and up
$ 89.99 USD
Free Shipping on orders $49 and up
The Precision Raceworks Ethanol 360 fuel line fittings are designed to work in almost any application where you have 5/16" or 7.89mm quick-connect fittings and need to add a flex fuel sensor. These fittings work with almost all ethanol sensors without the need to cut and splice or replace entire line sets. This is a perfect way to add an ethanol sensor to your vehicle while maintaining existing fuel lines.
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ARP - Corporate Logo
T#:2211
Part#: 201-6103
In Stock
$ 215.99 USD
Free Shipping
$ 215.99 USD
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Set of 12 ProSeries connecting rod bolts, made by ARP -- the world leader in fastener technology. Each bolt is made of ARP2000 material, which exceeds the strength of 8740 Chrome Moly, and is able to achieve clamp load at 220,000psi. ARP2000 fasteners are used widely in motorsport and drag racing as an upgrade from 8740 Chrome Moly in both steel and aluminum rods. These are simply the best connecting rod bolts available, making them ideal for ultra high performance, racing and forced induction applications.

These bolts are M11 size to replace the stock M11 BMW bolt part number 11-24-7-834-310 (11247834310). The M11 bolt size was used in S54 engines up to 2/2003 production. However, most S54 engines up to that point had their rod bearings replaced under a factory recall and some may have had new connecting rods installed at the same time (or even a new engine altogether). The new bolts installed in these earlier engines are M10 size. Unfortunately, there is no way of knowing which rod or bolt is currently in your car (unless your car came with service records detailing when and what was replaced). The only sure way to know is to check the bolts currently installed in your engine. If yours was updated to the M10 sized bolt, use ARP kit #201-6102 . ARP bolts are not returnable if the pacakge has been open.

ARP is a company that prides itself on performance and durability, no matter the application. Offering the finest engine hardware money can buy is the driving initiative at ARP and this is evidenced by the staggering amount of satisfied customers and race teams the world over.

These ARP connecting rod bolts fit the following BMWs:
2001-2/2003 E46 M3 coupe / convertible
2001-2002 MZ3 M Roadster & M Coupe
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Precision Raceworks - Corporate Logo
T#:1165728
Part#: 601-0177
In Stock
$ 494.99 USD
Free Shipping
$ 494.99 USD
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When upgrading your turbos or increasing your BMW's power potential, it's important not to overlook your fuel pump. Both low and high-pressure fuel pumps can only flow so much fuel, limiting power potential regardless of turbo size or other power adders, especially when running an ethanol blend. Upgrade your BMW fuel pump with Precision Raceworks' Low-Pressure Bucketed Fuel Pump Kits. Precision's low-pressure fuel pumps are designed to flow significantly more fuel than your BMW's stock system, ideal for customers who are upgrading their vehicles or plan to run blended fuel or E85 alone! This is a true plug-and-play solution that anyone can install in their home garage and start taking advantage of the benefits right away. Precision Raceworks' Stage 2+ bucketed fuel pump kit includes a genuine Walbro 535 (F90000295) fuel pump, capable of supporting up to 650whp on 93 octane pump gas or 550whp on 100% E85! In order to prevent having to send in your fuel pump, each of Precision Raceworks' kits includes thorough instructions and all of the items required to assemble your kit at home. This prevents delays in shipping, potential damage to your stock fuel pump housing, and reduces assembly costs to keep prices low. It also improves installation as there is no guesswork on engagement and sealing of o-ring or complications and risks of tightening clamps that can poke holes in critical plastic components nearby. While all bucketless fuel pumps flow .2gpm more than a bucket design that retains the venturi, it comes at a cost. Bucketless pumps should not be driven on tanks lower than 1/4 full and should not be used for road course racing. This is not a disadvantage of only bucketless designs, but also a disadvantage for any bucket design which deletes the venturi. If you do not plan on road course or drag racing (not street racing) and are responsible at maintaining 1/4 tank of fuel during spirited driving, bucketless pumps can be a cheaper alternative for you.
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Precision Raceworks - Corporate Logo
T#:4333508
Part#: 201-0091
Back Ordered
$ 39.99 USD
Free Shipping on orders $49 and up
Replaces individual coils found in the Precision Raceworks Ignition Kit.
ARP - Corporate Logo
T#:3631
Part#: 201-4303
In Stock
$ 247.99 USD
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$ 247.99 USD
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Virtually every top professional BMW engine builder relies on ARP Pro Series head studs, particularly on the S54 3.2 liter engine. ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Each stud is heat-treated to 200,000 psi, ensuring complete heat penetration. ARP studs are threaded after heat-treat, which gives them 1000% (that's ten times!) better fatigue strength than studs threaded prior to heat-treat. Threading the studs after heat-treating is more difficult and costly (as it's harder on tooling) but the results are well worth the effort. These simply are the best S54 head studs we've found for the E46 M3 6 cylinder engines, and we highly recommend them in both the racing and forced induction arena. (Due to the additional clamping force between the head and block, these are IDEAL for turbo charging and supercharging!)

Converting from the factory BMW head bolts to head studs makes it much easier to assemble an engine, especially a racing powerplant which must be serviced frequently (and quickly!), and also ensures proper alignment of the head and gasket. Head studs also provide more accurate and consistent torque loading. Here's why: When you use bolts to secure the head, the fastener is actually being "twisted" while it's being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A head stud should be installed in a "relaxed" mode -- never crank it in tightly using a jammed nut. If everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. An information sheet is provided with each set. Kit includes everything pictured -- 14 head bolts, washers, bolts and assembly lubricant.

ARP is a company that prides itself on performance and durability, no matter the application. Offering the finest engine hardware money can buy is the driving initiative at ARP and this is evidenced by the staggering amount of satisfied customers and race teams the world over.​

These head studs fit the following BMWs/engines
2001-2006 E46 M3 coupe & convertible
2001-2002 MZ3 M Roadster & M Coupe (with S54 engine)
2006-2008 MZ4 Z4 M Roadster & M Coupe
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OEM Valeo Alternator - 180amp - E9X M3 S65
We Price Match - Give Us A Call or Chat!
Valeo - Corporate Logo
T#:377508
Part#: 12317837981
In Stock
$ 630.99

This product was last offered at the strikethrough price on
05-07-2026

$ 404.99 USD
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$ 404.99 USD
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This is a NEW alternator from the OEM manufacturer, Valeo. No core charge applies. Valeo is an OEM manufacturer for many BMW alternators - save money by buying the same alternator in a different box!


OEM Starter Motor - E46 M3 2001-2006
We Price Match - Give Us A Call or Chat!
Valeo - Corporate Logo
T#:2988
Part#: 12417835735
Ships in 1 Business Day
$ 400.99

This product was last offered at the strikethrough price on
05-07-2026

$ 389.99 USD
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$ 389.99 USD
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This is the starter motor for BMW E46 M3 2001-2006 is an OEM Valeo unit.

This item fits the following BMWs:
2001-2006 E46 BMW M3. M3 Convertible
2001-2002 Z3 BMW Z3 M Roadster Z3 M Coupe
2005-2008 E85 BMW Z4 M Roadster Z4 M Coupe
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Precision Raceworks - Corporate Logo
T#:35761669
Part#: 201-0409
In Stock
$ 199.99 USD
Free Shipping on orders $49 and up
The **Precision Raceworks S58/B58 Plug-and-Play Install Harness for the Motiv ReFlex+** is certified by Motiv Motorsports and is an essential upgrade for anyone integrating a ReFlex+ into their S58 or B58 vehicle. This Harness replaces only the signal and power sub harness portion of the Motiv Reflex. Standard universal Motiv ReFlex Plus harness required for use of this Plug and Play Harness - ES#4810312 / ES#4810314 This innovative harness eliminates the need for cutting, crimping, or splicing into your factory wiring, providing a straightforward, fully reversible installation. Simply plug it in, and you're ready to go! ### Why Choose the Precision Raceworks Harness? Although the main harness included with the Motiv ReFlex+ is well-designed, its standard sub-harness requires splicing into the factory wiring. Precision Raceworks addresses this by offering a plug-and-play replacement for the sub-harness. This solution retains the high-quality main harness, avoids unnecessary costs, and simplifies installation for seamless performance. ### Key Features of the Precision Raceworks X58 Harness: - **Motiv Motorsports Certified**, ensuring complete compatibility. - **100% Plug-and-Play** for a quick, hassle-free installation. - **Compatible with Tuning Platforms** such as MHD, MHD+, EcuTek, and BM3. - **Premium Build Quality**, manufactured in an ISO 9001-certified facility using automotive-grade wiring. - **Fast Installation**, completed in as little as one hour. - **Reversible Setup**, preserving the factory harness with no permanent modifications. The Precision Raceworks harness is the ideal choice for ReFlex+ users seeking a reliable, cost-effective, and user-friendly solution without altering their vehicle's original wiring.
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Precision Raceworks - Corporate Logo
T#:37892104
Part#: 601-0288
In Stock
$ 89.99 USD
Free Shipping on orders $49 and up
$ 89.99 USD
Free Shipping on orders $49 and up
The Precision Raceworks Ethanol 360 fuel line fittings are designed to work in almost any application where you have 3/8" (9.49mm) quick-connect fittings and need to add a flex fuel sensor. These fittings work with almost all ethanol sensors without the need to cut and splice or replace entire line sets. This is a perfect way to add an ethanol sensor to your vehicle while maintaining existing fuel lines.
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Precision Raceworks - Corporate Logo
T#:38161701
Part#: 101-0257
In Stock
$ 49.99 USD
Free Shipping on orders $49 and up

Replacement Fuel Filter Element - 6 Micron | Precision Raceworks is designed for BMW and high-performance fuel systems, ensuring optimal fuel flow and superior filtration. This high-efficiency 6-micron filter element effectively captures contaminants, preventing debris from reaching fuel injectors and maintaining peak engine performance.

Regular maintenance of your fuel filter is essential for maximizing fuel system efficiency. Whether for racing or daily driving, this replacement element keeps your fuel system running at its best.

  • 6-micron filtration – Removes fine particles and contaminants to protect engine components
  • High-performance compatibility – Designed for use with Precision Raceworks inline fuel filters
  • Optimized fuel flow – Maintains consistent fuel delivery for peak performance
  • Durable construction – Engineered for long-lasting reliability in high-demand applications
  • Easy replacement – Simple installation for routine maintenance
  • Ideal for both street and track use – Ensures clean fuel supply for all driving conditions

Fuel Filter Replacement Guidelines:

  • Racing applications: Inspect at least twice per season and replace as needed
  • Daily driving: Inspect at least once a year or every 6,000 miles, replacing as necessary

Ensure your BMW fuel system stays clean and efficient with the Replacement Fuel Filter Element - 6 Micron | Precision Raceworks, the ultimate choice for maintaining performance and reliability.

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Precision Raceworks - Corporate Logo
T#:38094311
Part#: 201-0188
In Stock
$ 54.99 USD
Free Shipping on orders $49 and up

Port Injection Fuel Line For Top Mount Fuel Rail - N54 N55 is designed for seamless compatibility with most aftermarket intake manifolds featuring top mount port injection. It works with leading brands such as Black Market Parts, BKC, BMS, Sharp Custom, Doc Race, and more, ensuring a high-performance fuel delivery solution for BMW N54 and N55 engines.

Constructed with premium 6061 aluminum and anodized for 100% E85 compliance, this fuel line is engineered for durability and optimal fuel flow. The female quick connectors feature an air hose-style quick connect with dual seals (primary and secondary) to eliminate any risk of fuel leaks. Precision Raceworks utilizes Smooth Bore PTFE hose, a trusted component in high-end E85 applications worldwide.

This plug-and-play solution is fully compatible with both factory and aftermarket fuel lines, providing an easy, reliable way to supply fuel to the port injection system of your upgraded intake manifold.

  • Seamless fit – Compatible with most aftermarket top mount port injection manifolds
  • Durable construction – Machined from 6061 aluminum and anodized for E85 compatibility
  • Leak-proof design – Dual-seal quick connectors for maximum fuel safety
  • High-performance fuel delivery – Utilizes Smooth Bore PTFE hose for optimal flow
  • Easy installation – Direct plug-and-play with factory and aftermarket fuel lines
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Precision Raceworks - Corporate Logo
T#:38161736
Part#: 201-0405
Ships in 7 Business Days
$ 24.99 USD
Free Shipping on orders $49 and up
This fitting allows you to install a 1/8" npt port anywhere you have an existing quick connect Compatible with the Motiv 0-10 Bar pressure sensor

ARP - Corporate Logo
T#:189783
Part#: 201-4305
In Stock
$ 271.99

This product was last offered at the strikethrough price on
09-24-2026

$ 271.18 USD
Free Shipping
$ 271.18 USD
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Virtually every top professional BMW engine builder relies on ARP Pro Series head studs. ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Each stud is heat-treated to 200,000 psi, ensuring complete heat penetration. ARP studs are threaded after heat-treat, which gives them 1000% (that's ten times!) better fatigue strength than studs threaded prior to heat-treat. Threading the studs after heat-treating is more difficult and costly (as it's harder on tooling) but the results are well worth the effort. These simply are the best head studs we've found and we highly recommend them in both racing and forced induction applications. Due to the additional clamping force between the head and block, these are IDEAL for turbocharged engines.

Converting from the factory BMW head bolts to head studs makes it much easier to assemble an engine, especially a racing powerplant which must be serviced frequently (and quickly!), and also ensures proper alignment of the head and gasket. Head studs also provide more accurate and consistent torque loading. Here's why: When you use bolts to secure the head, the fastener is actually being "twisted" while it's being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A head stud should be installed in a "relaxed" mode -- never crank it in tightly using a jammed nut. If everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. An information sheet is provided with each set.

ARP is a company that prides itself on performance and durability, no matter the application. Offering the finest engine hardware money can buy is the driving initiative at ARP and this is evidenced by the staggering amount of satisfied customers and race teams the world over.​

This item fits the following BMWs:
1985-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
1989-1990 E34 BMW 525i
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Precision Raceworks - Corporate Logo
T#:1331989
Part#: 601-0056
In Stock
$ 584.99 USD
Free Shipping
$ 584.99 USD
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When upgrading your turbos or increasing your BMW's power potential, it's important not to overlook your fuel pump. Both low and high-pressure fuel pumps can only flow so much fuel, limiting power potential regardless of turbo size or other power adders, especially when running ethanol blends. Upgrade your BMW fuel pump with Precision Raceworks' F-Chassis High-Performance Fuel Pump Kit. Precision's low-pressure fuel pumps are designed to flow significantly more fuel than your BMW's stock system, ideal for customers who are upgrading their vehicles or plan to run blended fuel or E85 alone! Best of all, these pumps ship completely assembled and ready to install! New pump, new fuel filter, and new sending unit included! This is a true plug-and-play solution that anyone can install in their home garage and start taking advantage of the benefits right away. By design, a fuel pump such as this is ideal for daily driving and racing applications of all kinds. This system keeps the primary pump fully submerged in fuel regardless of tank level or the g-force the car is subjected to. Precision Raceworks' Stage 2+ bucketed fuel pump kit includes a Walbro 535 (F90000285) fuel pump, capable of supporting up to 675whp on 93 octane pump gas or 600whp on 100% E85. Even better yet? No wires to cut or splice, nothing to assemble, 100% OEM quality, and drop-in ready!
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Precision Raceworks - Corporate Logo
T#:25374610
Part#: 201-0003
In Stock
$ 69.99 USD
Free Shipping on orders $49 and up
Precision Raceworks BMW N54 Factory Location Replacement Spark Plug Wires are the same high-quality wires featured in our acclaimed BMW N54 High-Performance Ignition Kit. Engineered with low-resistance, high-performance technology, these spark plug wires are a fully custom design. Precision Raceworks is the only manufacturer worldwide to create spark plug wires with boots specifically designed for the N54 BMW, ensuring optimal fitment and superior quality.
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ARP - Corporate Logo
T#:2210
Part#: 201-6201
Ships in 7 Business Days
$ 222.99

This product was last offered at the strikethrough price on
08-13-2026

$ 194.99 USD
Free Shipping on orders $49 and up
$ 194.99 USD
Free Shipping on orders $49 and up
Set of 12 ProSeries connecting rod bolts, made by ARP -- the world leader in fastener technology. Each bolt is made of ARP2000 material, which exceeds the strength of 8740 Chrome Moly, and is able to achieve clamp load at 220,000psi. ARP2000 fasteners are used widely in motorsport and drag racing as an upgrade from 8740 Chrome Moly in both steel and aluminum rods. These are simply the best connecting rod bolts available, making them ideal for ultra high performance, racing and forced induction applications.

This set replaces the factory BMW rod bolt number 11-24-1-739-728 (11241739728) which measures 44mm in length. The 44mm BMW rod bolt was used on all US spec E36 M3 (3.0 and 3.2 liter), 1999-2000 E46 323i/323Ci, 2001-2005 325i/325Ci, Z3 1.9,2.5 and 3.2, as well as Z4 2.5. It was also used on SOME of the M50 2.5 liter engines from 1992-1995 -- but check before ordering! Opened ARP bolt kits are not returnable. If your M50 2.5 liter engine has 53mm rod bolts, you will require kit part# 201-6301 instead.

ARP is a company that prides itself on performance and durability, no matter the application. Offering the finest engine hardware money can buy is the driving initiative at ARP and this is evidenced by the staggering amount of satisfied customers and race teams the world over.

These ARP connecting rod bolts fit the following BMWs:
1992-1995 E36 325i/is *** with 44mm rod bolts only ***
1995-1995 E36 M3 S50 3.0 liter (US model)
1996-1999 E36 M3 S52 3.2 liter (US model)
1999-2000 E46 323i & 323Ci (US)
2001-2005 E46 325i, 325xi & 325Ci (US)
1998-2002 Z3 2.3 / 2.5 liter
1998-2000 MZ3 M Roadster & M Coupe
2003-2005 Z4 2.5 liter
*** DOES NOT FIT E36 328 ****
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Precision Raceworks - Corporate Logo
T#:10714270
Part#: 201-0247
In Stock
$ 164.99 USD
Free Shipping on orders $49 and up
NOTE: Requires a Continental Flex Fuel Sensor be utilized, will not directly replace the OE fuel line. The Precision Raceworks AN6 Fuel line upgrade is a direct replacement from the fuel filter on the driver’s side of the car to the high-pressure fuel pump. All connections are designed in-house and machined from 6061 aluminum then anodized for 100% E85 compliance. All female connectors have 2 seals (a primary and secondary seal) to guarantee no possible fuel leaks. The fuel line used by Precision Raceworks is smooth bore PTFE hose that is wrapped in a Stainless Steel braiding for protection and then a nylon braiding to protect surfaces. This type of hose is used in high-end E85 applications built all over the world. This is a better than OEM quality solution to help you achieve the needs of your high horsepower build on E85. Specifications: Fuel hose type: PTFE Smooth Bore Line Size: -6AN (1/2") Connection Style: OEM Quick Connect Connector Material: 6061 Aircraft Grade Aluminum Connects to flex fuel sensor: Yes
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Precision Raceworks - Corporate Logo
T#:3786918
Part#: 201-0002
In Stock
$ 69.99 USD
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$ 69.99 USD
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The Precision Raceworks N54 N55 Manifold Location Replacement Spark Plug Wires are the same wires that come with Precision Raceworks' BMW N54 and N55 High Performance Ignition Kits, featuring low-resistance, high-performance spark plug wires. These wires are 100% custom-designed from the ground up to meet or exceed OEM requirements and feature seals that are both dust and water resistant. These spark plug wires work with Precision Raceworks' BMW N54 and N55 High Performance Ignition Kits 601-0021 or 601-0149.
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Precision Raceworks - Corporate Logo
T#:5216005
Part#: 601-0163
In Stock
$ 899.99 USD
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$ 899.99 USD
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Upgrade your BMW fuel pump with Precision Raceworks' F-Chassis High-Performance Fuel Pump Kit for vehicles with the S55 or B58 engine. Precision's low-pressure fuel pumps are designed to flow significantly more fuel than your BMW's stock system, ideal for customers who are upgrading their vehicles or plan to run blended fuel or E85 alone! Best of all, these pumps ship completely assembled and ready to install! New pump, new fuel filter, and new sending unit included! This is a true plug-and-play solution that anyone can install in their home garage and start taking advantage of the benefits right away.
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Precision Raceworks - Corporate Logo
T#:38229099
Part#: 601-0108
Ships in 9 Business Days
$ 479.99 USD
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Rid your BMW's N54 or N55 engine of misfires, sluggish throttle response, rough idle, and power loss with Precision Raceworks' High-Performance Ignition Kit!
Beru - Corporate Logo
T#:584875
Part#: 12218591724
In Stock
$ 185.00

This product was last offered at the strikethrough price on
08-13-2026

$ 126.99 USD
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$ 126.99 USD
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Sends power to the glow plugs to preheat them for ignition.

Precision Raceworks - Corporate Logo
T#:1271579
Part#: 601-0021
Back Ordered
$ 479.99 USD
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$ 479.99 USD
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Rid your BMW's N54 or N55 engine of misfires, sluggish throttle response, rough idle, and power loss with Precision Raceworks' High-Performance Ignition Kit!

Precision Raceworks - Corporate Logo
T#:1331988
Part#: 601-0014
Ships in 9 Business Days
$ 499.99 USD
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$ 499.99 USD
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If you plan on upgrading your turbos or increasing power in some other way, it is important not to overlook your fuel pump. Both low and high-pressure fuel pumps can only flow so much fuel, limiting power potential regardless of turbo size or other power adders, especially when running ethanol blends. Upgrade your BMW fuel pump with Precision Raceworks' F-Chassis High-Performance Fuel Pump Kit. Precision's low-pressure fuel pumps are designed to flow significantly more fuel than your BMW's stock system, ideal for customers who are upgrading their vehicles or plan to run blended fuel or E85 alone! Best of all, these pumps ship completely assembled and ready to install! New pump, new fuel filter, and new sending unit included! This is a true plug-and-play solution that anyone can install in their home garage and start taking advantage of the benefits right away. By design, a fuel pump such as this is ideal for daily driving and racing applications of all kinds. This system keeps the primary pump fully submerged in fuel regardless of tank level or the g-force the car is subjected to. Precision Raceworks' Stage 2 bucketed fuel pump kit includes a Walbro 450 (F90000274) fuel pump, capable of supporting up to 575whp on 93 octane gas or 500whp on 100% E85. Even better yet? No wires to cut or splice, nothing to assemble, 100% OEM quality, and drop-in ready!
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Innovate Motorsports - Corporate Logo
T#:28836410
Part#: 38770
In Stock at Vendor
$ 212.99 USD
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Features & Benefits:

Two configurable linear 0-5V analog outputs Ability to calibrate O2 sensors for maximum accuracy Includes LC-2 controller and Bosch wideband O2 sensor Comes with a program cable, manual, and a 10 ft. sensor cable Includes a 1-inch mild steel exhaust bung Innovate MTS serial in/out capability Integrated dual-color status LED (green/red) Patented DirectDigital™ wideband sensor control Positive lock connectors for all connections Real-time display data on screen or with the powerful LogWorks software Range:

AFR (Air-Fuel Ratio) range from 7.4:1 to 22.4:1 (0.5 to 1.5 lambda)

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ARP - Corporate Logo
T#:2192
Part#: 201-5002
In Stock at Vendor
$ 171.99 USD
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This ARP main stud set is for the S54 3.2 liter, as found in all 2001 to 2006 E46 M3, as well as the 2006-2008 Z4 M Roadster and M Coupe models. Switching to the ARP main stud kit eliminates main cap walk and fretting, as well as protects the threads in your engine block. Each stud is made using the best materials, process, design and engineering, which exceeds even the most stringent racing and aerospace specifications. This S54 main stud kit includes hardened parallel-ground washers and aerospace quality nuts.

The studs are manufactured from 8740 chrome moly steel, heat-treated in-house to 190,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others. On the E30 M3, there's no reason to settle for anything less than the best, which is why we carry and use ARP fasteners and studs on our own BMW race cars.

ARP is a company that prides itself on performance and durability, no matter the application. Offering the finest engine hardware money can buy is the driving initiative at ARP and this is evidenced by the staggering amount of satisfied customers and race teams the world over.

This ARP main stud kit fits the following BMWs:
2001-2006 E46 M3 3.2 liter coupe/convertible
2001-2002 MZ3 M Coupe & M Roadster (S54 engine)
2006-2008 MZ4 M Coupe & M Roadster
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Precision Raceworks - Corporate Logo
T#:38195449
Part#: 501-0043
In Stock
$ 159.99 USD
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Adjust your fuel pressure as needed. Thanks to the 1:1 boost reference, fuel pressure will increase as boost pressure increases, ensuring fuel delivery remains optimal under all conditions.

Precision Raceworks - Corporate Logo
T#:5216002
Part#: 601-0110
Back Ordered
$ 868.99 USD
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$ 868.99 USD
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If you are looking to get more power out of your BMW, it's important not to forget your fueling system! Your low and high-pressure fuel pumps can only flow so much fuel, limiting power potential regardless of turbo size or other power adders, especially true when running ethanol blends. Bring your fuel system up to par with Precision Raceworks' E-Chassis High-Performance Fuel Pump Kits! Precision's low-pressure fuel pumps are designed to flow significantly more fuel than your BMW's stock system, ideal for customers who are upgrading their vehicles or plan to run blended fuel or E85 alone. Best of all, these pumps ship completely assembled and ready to install! New pump, new fuel filter, and new sending unit included! This is a true plug-and-play solution that anyone can install in their home garage and start taking advantage of the benefits right away. By design, a fuel pump such as this is ideal for daily driving and racing applications of all kinds. This system keeps the primary pump fully submerged in fuel regardless of tank level or the g-force the car is subjected to. Precision Raceworks' Stage 3 bucketed fuel pump kit includes a Walbro 450 (F90000274) fuel pump, capable of supporting up to 1000whp on 93 octane pump gas or 875whp on 100% E85! Even better yet? No wires to cut or splice, nothing to assemble, 100% OEM quality, and drop-in ready. Included in the box New genuine OEM fuel pump bucket assembly (Pre-assembled with genuine Walbro 450 pump) Includes new fuel sending unit (fuel level sensor) New primary and secondary fuel filters Stage 3 Specifications: Horsepower Supported Pump Gas: ~1000whp Horsepower Supported 100% E85: ~875whp Aftermarket EKP Required: No **Some European Spec vehicles may require the re-use of the top hat due to differences in emissions requirements.
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Precision Raceworks - Corporate Logo
T#:8169508
Part#: 601-0116
In Stock
$ 594.99 USD
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$ 594.99 USD
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The Precision Raceworks E9x / E8x LOW PRESSURE BUCKETED FUEL PUMPS are designed for customers looking to run all blends of E85 and flow up to 3.9 liters per minute. The included Genuine Walbro 535 (F90000295) fuel pump is capable of flowing up to 350% more fuel than the factory fuel pump and is 100% E85 compliant. Precision Raceworks' Stage 2.5 V2 bucketed fuel pump comes with a single Walbro 535 (F90000295) fuel pump. This pump can support up to 650whp (Rated for 550whp on 100% E85) and is ready to grow with you as your needs demand. Unlike other manufacturers, Precision Raceworks is the only company featuring a bucketed kit with a modular design. This means you can purchase their stage 3 pump module or Stage 3.5 module and upgrade the pump as your needs change. If you are looking for a 100% assembled drop-in-ready solution, this is the choice for you! **Some European Spec vehicles may require the re-use of the top hat due to differences in emissions requirements. This is a true plug-and-play solution that anyone can install in their home garage and start taking advantage of the benefits right away. Features & Specifications: Lock Ring Tool Included Pump flow 72psi (5bar): 1.0 GPM / 3.9 LPM Pump Weight: 3.98 lbs Horsepower Supported Pump Gas: 650 Horsepower Supported 100% E85: 550 Aftermarket EKP Required: No
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Precision Raceworks - Corporate Logo
T#:1271578
Part#: 601-0159
Back Ordered
$ 449.99 USD
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$ 449.99 USD
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The Precision Raceworks BMW N20 / N26 HIGH PERFORMANCE IGNITION KIT is designed to integrate with any vehicle equipped with the N20/N26 engine. This is the highest output ignition system ever developed for the N2X community Featuring 100% plug and play connections and low resistance 50ohm/ft proprietary plug wires. High voltage & High Current coil design using technology from Marine & Aerospace applications. While coils do not increase horsepower unless the coil they are replacing are not doing their job the factory coils are lacking in proper output so much that all cars tested (stock or heavily modified) gain 20+ whp and 20+ wtq!
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Precision Raceworks - Corporate Logo
T#:38195386
Part#: 201-0129
In Stock
$ 69.99 USD
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The Precision Raceworks N54 N55 Manifold Location Replacement Spark Plug Wires are the same wires that come with Precision Raceworks' BMW N54 and N55 High Performance Ignition Kits, featuring low-resistance, high-performance spark plug wires. These wires are 100% custom-designed from the ground up to meet or exceed OEM requirements and feature seals that are both dust and water resistant. These spark plug wires work with Precision Raceworks' BMW N54 and N55 High Performance Ignition Kits 601-0108 or 601-0150.
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Precision Raceworks - Corporate Logo
T#:38161730
Part#: 601-0316
Ships in 4 Business Days
$ 299.99 USD
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The Precision Raceworks BMW G-Series & A9x Toyota Supra Billet Tophat maximizes fuel system performance with up to three high-flow ports and 12-wire compatibility, offering versatile pump configurations to suit any setup.
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ARP - Corporate Logo
T#:2207
Part#: 201-5001
Ships in 8 Business Days
$ 119.99 USD
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$ 119.99 USD
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This ARP main stud set for the E30 M3 eliminates main cap walk and fretting, as well as protects the threads in your engine block. Each S14 main stud is made using the best materials, process, design and engineering, which exceeds even the most stringent racing and aerospace specifications. This main stud kit includes hardened parallel-ground washers and aerospace quality nuts.

The studs are manufactured from 8740 chrome moly steel, heat-treated in-house to 190,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others. On the E30 M3, there's no reason to settle for anything less than the best, which is why we carry and use ARP fasteners and studs on our own BMW race cars.

ARP is a company that prides itself on performance and durability, no matter the application. Offering the finest engine hardware money can buy is the driving initiative at ARP and this is evidenced by the staggering amount of satisfied customers and race teams the world over.

This ARP main stud kit fits the following BMWs:
1988-1991 E30 M3 - S14 engine
1984-1985 E30 318i (M10)
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ARP - Corporate Logo
T#:2186
Part#: 201-6301
In Stock at Vendor
20% off MSRP $ 243.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 194.99 USD
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20% off MSRP
$ 243.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 194.99 USD
Free Shipping
Set of 12 ProSeries connecting rod bolts, made by ARP -- the world leader in fastener technology. Each bolt is made of ARP2000 material, which exceeds the strength of 8740 Chrome Moly, and is able to achieve clamp load at 220,000psi. ARP2000 fasteners are used widely in motorsport and drag racing as an upgrade from 8740 Chrome Moly in both steel and aluminum rods. These are simply the best connecting rod bolts available, making them ideal for ultra high performance, racing and forced induction applications.

This set replaces the 53mm length factory BMW rod bolts with part number 11-24-1-713-342 (11241713342) which was used on SOME of the M50 2.5 liter engines from 1992-1995. Check before ordering! Opened ARP bolt kits are not returnable. If your M50 2.5 liter engine has 44mm rod bolts, you will require kit part# 201-6201 instead.

ARP is a company that prides itself on performance and durability, no matter the application. Offering the finest engine hardware money can buy is the driving initiative at ARP and this is evidenced by the staggering amount of satisfied customers and race teams the world over.

These ARP connecting rod bolts fit the following BMWs:
1992-1995 E36 325i/is *** with 53mm rod bolts only ***
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Voltage Regulator
We Price Match - Give Us A Call or Chat!
Valeo - Corporate Logo
T#:594108
Part#: 12317603775
Ships in 1 Business Day
$ 71.56

This product was last offered at the strikethrough price on
10-27-2026

$ 63.33 USD
Free Shipping on orders $49 and up
$ 63.33 USD
Free Shipping on orders $49 and up
Have you noticed inconsistent electrical power in your interior lately? Your voltage regulator is responsible for maintaining a constant voltage out from the alternator.
Precision Raceworks - Corporate Logo
T#:38195408
Part#: 601-0049
In Stock
$ 299.99 USD
Free Shipping on orders $49 and up
The Precision Raceworks High Performance Fuel Pump is designed for customers looking to run all blends of E85. This kit includes a Walbro fuel pump capable of flowing up to 50% more fuel than the factory fuel pump and is 100% E85 compliant. Best of all this pump ships with the necessary lines pre-attached to keep your installation as simple as possible! By design, a fuel pump such as this is ideal for daily driving and racing applications of all kinds. This system keeps the fuel pump fully submerged in fuel regardless of tank level or the g-force the car is subjected to providing cool running temperatures allowing the pump to provide many years of service. Stage 2.5 (3.1 liters per minute) - Our Stage 2.5 bucketed fuel pump comes with a single Walbro 535 (F90000295) fuel pump. This pump can support up to 675whp (Rated for 600whp on 100% E85) and is an easy DIY task.
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ARP - Corporate Logo
T#:24112781
Part#: ARP-HSK-N54-S
Back Ordered
$ 499.99 USD
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Precision Raceworks - Corporate Logo
T#:38128023
Part#: 201-0396-SIL
In Stock
$ 59.99 USD
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BMW B58 S58 Billet Engine Oil Cap is a premium upgrade designed to enhance both the functionality and aesthetics of your BMW’s engine bay. Unlike generic aftermarket options, this billet oil cap incorporates OEM internals, ensuring proper pressure relief and maintaining factory reliability.

Precision-machined from high-quality billet aluminum, this oil cap provides exceptional durability while offering a sleek, performance-inspired look. Its anodized finish resists corrosion, heat, and wear, making it a long-lasting solution for enthusiasts who demand both style and reliability.

  • Maintains factory functionality – Retains OEM pressure relief valve for proper engine operation
  • CNC-machined billet aluminum – Provides superior strength and durability over plastic OEM caps
  • Direct fitment – Engineered for a perfect, hassle-free installation
  • Performance-inspired aesthetics – Enhances the look of the engine bay with a premium finish
  • Anodized coating – Protects against heat, corrosion, and wear
  • Long-lasting reliability – Designed to withstand high-performance driving conditions

Upgrade your BMW’s engine bay with a BMW B58 S58 Billet Engine Oil Cap, a perfect combination of OEM functionality and high-performance styling.

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Precision Raceworks - Corporate Logo
T#:40004858
Part#: 201-0261
In Stock
$ 1,799.00 USD
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The Precision Raceworks N55/S55 Upgraded DI Injectors are designed for customers looking to push the limits without port injection (or in addition to port injection). Our high flow injectors were developed in a partnership with NHP, taking advantage of resources offered by both companies to produce the highest quality and highest flowing direct injector upgrade ever for the N55 engine. These high flow injectors flow 85% over stock! Each injector is tested and calibrated using state of the art high pressure flow calibration equipment and then matched to a set of 6. Installation of these is a snap and is as simple as replacing your injectors, a little coding, and then checking a checkbox!
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ARP - Corporate Logo
T#:42335661
Part#: ARP-HSK-N55-S
Ships in 3 Business Days
$ 743.99 USD
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Enhance your BMW N55 engine's ability to handle higher levels of boost with 5150's custom-designed Head Stud Kit from ARP, the global leader in fastener technology!
E46 M3, MZ3 S54 OEM Valeo Alternator (New)
We Price Match - Give Us A Call or Chat!
Valeo - Corporate Logo
T#:377735
Part#: 12317831436
In Stock at Vendor
$ 522.00

This product was last offered at the strikethrough price on
07-16-2026

$ 473.99 USD
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$ 473.99 USD
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The alternator in your vehicle keeps the battery at full charge when your engine is running. Because all of your electronic systems run off of this small piece, it's important that it is operational. If your lights are dim while driving or your battery dies within minutes of starting your car, it's time for a new alternator.

This is a NEW alternator from the OEM manufacturer, Valeo. No core charge applies.

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ARP - Corporate Logo
T#:25241791
Part#: B58-CA-203-4706
In Stock at Vendor
20% off MSRP $ 1,027.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 822.99 USD
Free Shipping on orders $49 and up
20% off MSRP
$ 1,027.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 822.99 USD
Free Shipping on orders $49 and up
The Custom Age 625+ is made from a material that has a tensile strength of 260 ksi, which is substantially higher than the 190 ksi of the ARP 2000 head stud. It's an ideal choice for individuals who want to push the limits of their B58 builds and require a stronger head stud.
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ARP - Corporate Logo
T#:2187
Part#: 201-6104
In Stock at Vendor
$ 175.99 USD
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$ 175.99 USD
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Set of 8 Pro-Series connecting rod bolts, made by ARP -- the world leader in fastener technology. ARP Pro Series connecting rod bolts are precision CNC-machined to exacting specifications and designed for optimum reliability. Heat-treated with threads which are rolled to provide up to ten times more fatigue strength, these rod bolts are far superior to standard OEM BMW fasteners in terms of durability and ability to withstand stresses. This rod bolt set is specifically for the E30 M3 S14 2.3 liter engine.

Each bolt is made of ARP2000 material, which exceeds the strength of 8740 Chrome Moly, and is able to achieve clamp load at 220,000psi. ARP2000 fasteners are used widely in motorsport and drag racing as an upgrade from 8740 Chrome Moly in both steel and aluminum rods. These are simply the best connecting rod bolts available, making them ideal for ultra high performance, racing and forced induction applications.

ARP is a company that prides itself on performance and durability, no matter the application. Offering the finest engine hardware money can buy is the driving initiative at ARP and this is evidenced by the staggering amount of satisfied customers and race teams the world over.

These ARP connecting rod bolts fit the following BMWs:
1988-1991 E30 M3 - S14 4 cylinder
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ARP - Corporate Logo
T#:189786
Part#: 201-4605
In Stock at Vendor
$ 160.99 USD
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$ 160.99 USD
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Virtually every top professional BMW engine builder relies on ARP Pro Series head studs. ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Each stud is heat-treated to 200,000 psi, ensuring complete heat penetration. ARP studs are threaded after heat-treat, which gives them 1000% (that's ten times!) better fatigue strength than studs threaded prior to heat-treat. Threading the studs after heat-treating is more difficult and costly (as it's harder on tooling) but the results are well worth the effort. These simply are the best head studs we've found and we highly recommend them in both racing and forced induction applications. Due to the additional clamping force between the head and block, these are IDEAL for turbocharged engines.

Converting from the factory BMW head bolts to head studs makes it much easier to assemble an engine, especially a racing powerplant which must be serviced frequently (and quickly!), and also ensures proper alignment of the head and gasket. Head studs also provide more accurate and consistent torque loading. Here's why: When you use bolts to secure the head, the fastener is actually being "twisted" while it's being torqued to the proper reading. Accordingly, the bolt is reacting to two different forces simultaneously. A head stud should be installed in a "relaxed" mode -- never crank it in tightly using a jammed nut. If everything is right, the stud should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. An information sheet is provided with each set.

ARP is a company that prides itself on performance and durability, no matter the application. Offering the finest engine hardware money can buy is the driving initiative at ARP and this is evidenced by the staggering amount of satisfied customers and race teams the world over.​

This item fits the following BMWs:
1987-1991 E30 BMW M3
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