BMW Engine Parts for BMW 3 Series E30 (1984-1991)

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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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5150 Autosport - Corporate Logo
T#:28537477
Part#: ATH-HG-CR-S14-95
Ships in 3 Business Days
$ 284.99 USD
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This Athena Cut Ring Head Gasket is specifically engineered to replace BMW part 11121316714 for the S14B20, S14B23, S14B25, S14B27 engines found in the E30 M3. Factory OEM & MLS head gaskets are only engineered to handle a limited amount of cylinder pressures before they start to leak, causing a range of issues, including engine overheating, loss of power, misfires, and in severe cases, catastrophic engine failure. Athena-SCE Cut Ring Head Gaskets are uniquely designed to handle increased cylinder pressure caused by power modifications, making them the recommended choice for applications making 16+ psi. Design: Athena-SCE's gasket body is composed of Motorgasket, a reinforced material developed by Athena's R&D department. This consists of a steel core covered with two layers of asbestos-free aramid fibre and offers excellent thermal and mechanical resistance without compromising its ability to adapt to mating surfaces. To ensure maximum sealing under all conditions, a silicone bead is also applied to critical sealing areas, such as oil and coolant passages. The AISI 304 stainless steel cooper rings bite into the aluminum head, providing maximum sealing around the cylinder bore and optimizing engine performance, even on engines with nitrous and/or turbo applications that exceed 2 bar boost.
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Genuine BMW - Corporate Logo
T#:6603
Part#: 11121734142
Ships in 9 Business Days
5% off MSRP $ 298.99

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

$ 284.99 USD
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5% off MSRP
$ 298.99

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

$ 284.99 USD
Free Shipping


Genuine BMW Gasket Set Cylinder Head Asbestos Free -

This item fits the following BMW Chassis:
E30

Fits BMW Engines including:
M10

Bosch - Corporate Logo
T#:338004
Part#: 12411712937
Ships on Sep 24, 2026
Starting at $ 284.00 USD
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Starting at $ 284.00 USD
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E36/E46/M50/M52/M54 STARTER - THIS ONE IS THE "LATER" STYLE THAT DOES NOT REQUIRE NUTS. A refundable core charge will be added to your sale, refunded to you when we get your old starter back. Replaces Bosch part number SR0445X.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their exacting assembly process and high level of durability you can expect a long service life from all Bosch products.​

This item fits the following BMWs:
1990-1991 E30 BMW 318i 318is 318ic
1992-1998 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
1991-1995 E34 BMW 525i
1997-2003 E39 BMW 525i 528i 530i
2004-2005 E60 BMW 525i 530i
2004-2005 E83 BMW X3 2.5i X3 3.0i
1996-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
1998-2000 Z3 BMW M Roadster M Coupe
2003-2005 E85 BMW Z4 2.5i Z4 3.0i
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Genuine BMW - Corporate Logo
T#:19368
Part#: 12521287784
Ships in 3 Business Days
6% off MSRP $ 299.99

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

$ 282.99 USD
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6% off MSRP
$ 299.99

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

$ 282.99 USD
Free Shipping
This is a reference sensor used for crank position signal for the E24 635 and a top dead center signal for the E30 M3.

The E24 can have a crank position sensor (CPS) in one of two places: mounted in the transmission bellhousing reading the flywheel (early cars) or on the front of the engine block reading the teeth on the front crank pulley (later cars). The BMW parts information does not show a clear cutoff for each so check your car before ordering. The CPS sends a position signal to the DME so the computer knows when the engine is at TDC and can start the car. It's also when the engine is running for ignition timing. If your engine is not starting or running with misfires this is definitely one of the likely causes. Keep one as a spare to avoid downtime or being stranded!

This also sends a TDC signal in the E30 M3 but it's only used during diagnostic tests. The sensor is located on the upper transmission bellhousing, separate from the other reference sensors. It's only sending a signal to the diagnostic connector, not to the ECU itself. One of the problems with these reference sensors is that they all look alike, especially the male pin connectors on the body of the car. The TDC reference sensor itself is shorter and stubbier than the other two sensors on the M3 bellhousing. Unlike the other two sensors it does not have any markings or special features, just a plain black connector. And it's often missing from the car because it is not required to run and previous owners may have removed it to eliminate confusion.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1988-1991 E30 BMW M3
6/1987-1989 E24 BMW 635csi
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OEM VDO Fuel Pump -- E30 09/1987+
We Price Match - Give Us A Call or Chat!
Continental - Corporate Logo
T#:369782
Part#: 16141184022
Back Ordered
$ 279.99 USD
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$ 279.99 USD
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A failed fuel pump will prevent your car from running or even starting due to fuel starvation. Restore your fuel systems operation with this high quality OEM VDO fuel pump. 

Replacement for BMW part # 16141184022, 16141179992, and 16141179711.

OEM VDO is one of the largest OE providers in the world, supplying numerous vehicle brands, including BMW, with many of their genuine parts that build the vehicle before they ever reach the car lot. Entrusted by many of the top names in automotives and with their proven history of reliability, it makes all of us here at Turner confident that their line of OEM replacement parts are a perfect option to restore your vehicles original operation and performance. The same great quality or higher than Genuine BMW parts at a lower cost.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

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Cometic - Corporate Logo
T#:26738369
Part#: C4394-120
Special Order: No Guaranteed ETA
$ 277.99 USD
Free Shipping on orders $49 and up
Multi-Layer Steel gaskets are comprised of multiple embossed layers of both proprietary high-temperature coated and uncoated stainless steel, requiring less clamp load, creating less bore distortion, and conforms load distribution across the sealing area. The embossed outer layers of our head gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The MLS Gasket (Multi-Layer Steel) features an active combustion seal on multiple layers. The stainless steel outer layers utilize FKM (Viton®) rubber coating, a high-temperature and chemical-resistant polymer. A topcoat of PTFE aids in resistance to fret and increased cold sealing.
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Genuine BMW - Corporate Logo
T#:183167
Part#: 11311247483
In Stock
2% off MSRP $ 276.99

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

$ 271.99 USD
Free Shipping
2% off MSRP
$ 276.99

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

$ 271.99 USD
Free Shipping

Best to have replaced every 100,000 miles or less to prevent possible timing issues or failure.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.


Genuine BMW Guide Rail -
This item fits the following BMW Chassis:
E30 318i/is, E36 318i/is, Z3 1.9

Fits BMW Engines including:
M42,M44
 

 

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Performance Timing Belt Kit - from 09/1987
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:401679
Part#: M20_11KT1
Ships in 1 Business Day
$ 291.99

This product was last offered at the strikethrough price on
06-29-2026

$ 271.99 USD
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$ 271.99 USD
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 The timing belt on the M20 engine should be replaced every 50,000 miles. The Gates Racing's timing belt this kit includes  is constructed of HNBR elastomeric composites. That being said, they are 300% stronger than the OE belt & deliver up to three times the heat resistance. Also included in this kit are the following:

  • Gates Racing Timing Belt
  • Tensioner
  • Tensioner Spring and Bolt
  • Water Pump & Gasket
  • Thermostat & Gasket
  • Camshaft Seal
  • 1 Liter of Coolant
  • Radiator Drain Plug

This kit includes sufficient coolant for a water pump replacement. If you intend to perform additional cooling system maintenance, pick yourself up an additional bottle of coolant.

 

For vehicles with production date from 09/1987.For vehicles with production date from 09/1987.

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Victor Reinz - Corporate Logo
T#:288
Part#: 11121316992
Ships in 2 Business Days
$ 271.99 USD
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$ 271.99 USD
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Includes all the gaskets and seals needed when rebuilding the S14 cylinder head, along with the head gasket. This set of gaskets is a both a time and money saver. It includes all of the commonly replaced gaskets, seals, and o-rings when performing this overhaul. Having these on hand instead of chasing them down at the last minute will save you time, money, and frustration. With this area of the engine apart you're going to want or need to replace these items anyway to ensure it's free of fluid and vacuum leaks. This is especially important because some states have very strict emissions regulations and vacuum and oil leaks can lead to failed inspections tests. On newer cars this can also create issues in the on-board diagnostics system. Even if you're not pulling the head this set includes so many valuable parts you'll want to keep this on hand to use for spares. If you drive a European vehicle, chances are high your vehicle came equipped with one or more Victor Reinz gaskets. Choose OE quality VR gaskets and seals and do the job right the first time. This item fits the following BMWs: 1987-1991 E30 BMW M3
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ARP - Corporate Logo
T#:189783
Part#: 201-4305
In Stock
$ 271.99

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

$ 271.18 USD
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$ 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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Braille - Corporate Logo
T#:558042
Part#: B3121
Ships in 6 Business Days
$ 270.99 USD
Free Shipping on orders $49 and up
When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your car's operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind! The B3121 battery from Braille is their lightest do-everything battery available, offering 1380 pulse cranking amps that can crank over V8 engines with ease while still coming in at under 22 pounds, half of the weight of a standard Group 34 battery! This is thanks to their Advanced AGM racing technology that allows them to put a ton of power into a very small package. Physical Specifications: BCI Group: All sizes Weight: 21lbs / 9.5kg Length: 6.6" / 168mm Width: 5.2" / 132mm Height: 6.8" / 173mm Polarity: Right Side Positive Terminal Type: Steel terminal block with M6 bolt Performance Specifications: Voltage: 12v Recharge Voltage: 14.4V – 14.6V Maintenance charge voltage: 13.8V 5s Pulse Cranking Amps (PCA): 1380 10s PDC: 124 Amp Hour (Ah): 31 Watt Hour (Wh): 372 Life Cycle @ 10% DOD: 3100 Charging Temperature 0C to 50C Discharge Temperature range -40C to +60C Storage temperature -40C to +60C *THIS BATTERY REQUIRES A CUSTOM MOUNTING SOLUTION. The size and weight are significantly smaller than a stock battery and will not be held in place by the stock battery mount*
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Innovate Motorsports - Corporate Logo
T#:22558994
Part#: INN3904
In Stock at Vendor
14% off MSRP $ 313.99

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

$ 269.00 USD
Free Shipping on orders $49 and up
14% off MSRP
$ 313.99

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

$ 269.00 USD
Free Shipping on orders $49 and up

Introducing the Innovate Motorsports MTX Digital Series "Dual Function" Gauges – now available! These 2 1/16" (52mm) gauges come with interchangeable faceplates and bezels, locking connectors for simplified installation, and MTS serial connections for seamless integration with other Innovate devices for data logging.

DISPLAY RANGE

  • Ethanol Content %: 0-100%
  • Temperature: -40-257 °F (-40-125°C)

KEY FEATURES

  • Ethanol Content
  • Error reporting for ethanol content sensor (Digital Display)
  • Fuel Temperature
  • Customizable exterior LED display
  • Programmable exterior LED color options
  • Selectable unit of measure in °F or °C
  • Programmable fuel temperature warning (outer LED)
  • 2-Configurable analog outputs
  • Ethanol Content: 0v = 0%, 5v = 100%
  • Fuel Temperature: 0v = -40 °F, 5v = 257 °F (-40-125°C)

MTX-D: Ethanol Content Percentage & Fuel Temp Gauge Kit includes Gauge (Black Faceplate, Black Bezel), Silver Bezel & White Faceplate, Harness, Program Cable (Serial), Ethanol Content Sensor, Quick Start Installation Guide.

Please note that this is a universal fitment gauge, and installation may vary depending on the vehicle.

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Genuine BMW - Corporate Logo
T#:31917
Part#: 11141272390
Ships in 9 Business Days
5% off MSRP $ 281.99

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

$ 268.99 USD
Free Shipping
5% off MSRP
$ 281.99

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

$ 268.99 USD
Free Shipping


Genuine BMW Cover -
This item fits the following BMW Chassis:
E30,E34

Fits BMW Engines including:
M20

Performance Timing Belt Kit - up to 09/1987
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:401678
Part#: M20_11KT
In Stock
Sale - Save 8% $ 290.99

This product was last offered at the strikethrough price on
04-16-2026

$ 267.60 USD
Free Shipping
Sale - Save 8%
$ 290.99

This product was last offered at the strikethrough price on
04-16-2026

$ 267.60 USD
Free Shipping

 The timing belt on the M20 engine should be replaced every 50,000 miles. The Gates Racing's timing belt this kit includes  is constructed of HNBR elastomeric composites. That being said, they are 300% stronger than the OE belt & deliver up to three times the heat resistance. Also included in this kit are the following:

  • Gates Racing Timing Belt
  • Tensioner
  • Tensioner Spring and Bolt
  • Water Pump & Gasket
  • Thermostat & Gasket
  • Camshaft Seal
  • 1 Liter of Coolant
  • Radiator Drain Plug

This kit includes sufficient coolant for a water pump replacement. If you intend to perform additional cooling system maintenance, pick yourself up an additional bottle of coolant.

 

For vehicles with production date up to 09/1987.

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Bosch - Corporate Logo
T#:29898445
Part#: 13621362599
Ships in 2 Business Days
$ 283.99

This product was last offered at the strikethrough price on
04-10-2026

$ 266.99 USD
Free Shipping on orders $49 and up
$ 266.99 USD
Free Shipping on orders $49 and up
Genuine BMW Temperature-Time Switch

Passenger Side Fuel Sending Unit
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:5471090
Part#: 16141152266
In Stock
$ 264.99 USD
Free Shipping
$ 264.99 USD
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Fuel sending unit, found in your vehicle's fuel tank, on the side with the fuel pump.

Turner Baffled Oil Universal Catch Can Kit - 10oz
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:398786
Part#: 022798TMS01-09KT
In Stock
Sale - Save 15% $ 305.99

This product was last offered at the strikethrough price on
06-14-2026

$ 260.09 USD
Free Shipping
Sale - Save 15%
$ 305.99

This product was last offered at the strikethrough price on
06-14-2026

$ 260.09 USD
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When we designed this catch we wanted to have the most function options available, the best separation method, and the easiest to service. The Turner engineered catch cans offer a pre-setup design based ion desired flow direction, however this does not limit you to this flow.
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Genuine BMW - Corporate Logo
T#:283
Part#: TMS283
Ships in 3 Business Days
$ 259.99 USD
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$ 259.99 USD
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The E30 M3 Head Bolt Set includes 10 head bolts.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.
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Turner Baffled Oil Catch Can Kit - 6oz
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:398782
Part#: 022798TMS01-05KT
In Stock
Sale - Save 15% $ 302.99

This product was last offered at the strikethrough price on
06-14-2026

$ 257.54 USD
Free Shipping
Sale - Save 15%
$ 302.99

This product was last offered at the strikethrough price on
06-14-2026

$ 257.54 USD
Free Shipping
When we designed this catch we wanted to have the most function options available, the best separation method, and the easiest to service. The Turner engineered catch cans offer a pre-setup design based ion desired flow direction, however, this does not limit you to this flow. The inner baffle orientation can be easily adjusted to flow in both directions in case you decide to move this catch can to a different vehicle. A 4 chamber system baffle system inside the catch can was engineered to create multiple changes in the direction of airflow within the separator to cause oil droplets to fall out of suspension before exiting the catch can. Having a closed/recirculated design reduces oil ingestion and promotes cleaner emissions and odor-less operation.
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Delphi - Corporate Logo
T#:2749
Part#: 16141179992
Ships in 1-2 days
$ 352.99

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

$ 254.98 USD
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$ 254.98 USD
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This fuel pump fits the BMW E30 325e 325es 325i 325is 325ic and 325ix from 1988-1991. This fuel pump is located inside the fuel tank.

This item fits the following BMWs:
1988-1991 E30 BMW 325e 325es 325i 325is 325ic 325ix
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Bosch - Corporate Logo
T#:2278
Part#: SR43X
Ships in 1 Business Day
$ 258.99

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

$ 252.99 USD
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$ 252.99 USD
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Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their exacting assembly process and high level of durability you can expect a long service life from all Bosch products.​

This genuine Bosch Starter fits the following BMWs:
1984-1985 E30 3 Series 323i 325e 325es
1982-12/1986 E28 5 Series 528e
1977-1983E21 3 Series 320/6 323i

 

Includes $45.00 core charge to be refunded on return of your rebuildable core.

 

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JE Piston - Corporate Logo
T#:33713142
Part#: 312385S
In Stock at Vendor
$ 251.99 USD
Free Shipping on orders $49 and up

JE Pistons BMW S14B23 Piston - 13:1 Compression – 93.80 mm Bore – 1.260 in. CH, 3.60 CC is engineered for high-performance BMW engines, delivering unmatched power and reliability for motorsport enthusiasts. These precision pistons are designed for the iconic BMW S14 engine, commonly found in the legendary E30 M3, enhancing performance with advanced materials and optimized compression ratios.

Turner Motorsport offers these forged pistons for racers looking to maximize their engine's potential. The 13:1 compression ratio provides excellent throttle response, increased horsepower, and torque. Built for durability, JE Pistons ensure that your BMW engine runs efficiently under high-stress conditions on both the track and the street.

Key Benefits:

  • Optimized 13:1 compression ratio for superior engine performance
  • High-strength forged construction for long-lasting durability
  • Designed for BMW S14B23 engines, including E30 M3
  • Enhanced bore and compression height for precision fitment
  • Increased horsepower and torque for motorsport applications
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JE Piston - Corporate Logo
T#:33713146
Part#: 312386S
In Stock at Vendor
$ 251.99 USD
Free Shipping on orders $49 and up

JE Pistons BMW S14B23 Piston - 13:1 Compression – 94.00 mm Bore – 1.260 in. CH, 3.40 CC is designed to elevate the performance of BMW S14 engines, delivering maximum power, reliability, and precision. These high-performance pistons are engineered specifically for motorsport enthusiasts and are a perfect fit for the iconic BMW E30 M3, providing a significant boost in horsepower and torque.

Available through Turner Motorsport, these JE Pistons feature a 13:1 compression ratio and a 94.00 mm bore, optimizing combustion efficiency for enhanced throttle response. Built from forged materials, they are designed to withstand extreme conditions, ensuring durability and long-lasting performance under high stress on the street or track.

Key Benefits:

  • 13:1 compression ratio for superior engine performance and power
  • 94.00 mm bore for optimized engine displacement and precision fitment
  • 1.260 in. compression height and 3.40 CC volume for enhanced combustion
  • Forged construction for maximum strength and durability
  • Specifically engineered for BMW S14B23 engines, including the E30 M3
  • Available through Turner Motorsport, providing trusted quality and expert support
  • Ideal for both street performance and motorsport applications
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JE Piston - Corporate Logo
T#:33713155
Part#: 321359S
In Stock at Vendor
$ 251.99 USD
Free Shipping on orders $49 and up

JE Pistons BMW S14B23 Piston - 8.5:1 Compression – 94.00 mm Bore – 1.260 in. CH, -23.70 CC is expertly engineered for BMW S14 engines, offering a lower compression ratio ideal for turbocharged and high-boost applications. Designed to provide increased power and durability, these high-performance pistons are perfect for enhancing the performance of the BMW E30 M3, delivering consistent results both on the street and track.

Available through Turner Motorsport, these JE Pistons are forged for maximum strength and heat resistance, making them capable of withstanding extreme pressure and high RPMs. With a 94.00 mm bore and -23.70 CC volume, these pistons are precisely crafted to optimize engine displacement and combustion efficiency, allowing for greater throttle response and boosted power output.

Key Benefits:

  • 8.5:1 compression ratio for optimal performance in turbocharged and high-boost applications
  • 94.00 mm bore for increased engine displacement and improved performance
  • 1.260 in. compression height and -23.70 CC volume for efficient combustion
  • Forged construction for maximum strength and durability under extreme conditions
  • Specifically designed for BMW S14B23 engines, including the iconic E30 M3
  • Available through Turner Motorsport, ensuring quality products and expert support
  • Ideal for motorsport and high-performance street applications
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JE Piston - Corporate Logo
T#:33713160
Part#: 321360S
In Stock at Vendor
$ 251.99 USD
Free Shipping on orders $49 and up

JE Pistons BMW S14B23 Piston 8.5:1 Compression – 94.20 mm Bore – 1.260 in. CH, -24.00 CC is the ultimate performance upgrade for enthusiasts looking to enhance their BMW S14B23 engine. Designed to deliver optimal performance and reliability, these pistons are perfect for anyone aiming for high horsepower while maintaining efficiency. Turner Motorsport offers these precision-engineered pistons that provide a perfect fit and maximum power.

  • Improved Performance: Increases horsepower and torque for an exhilarating driving experience.
  • Durable Construction: Made from high-quality materials to withstand extreme conditions and prevent failure.
  • Optimized Compression Ratio: 8.5:1 compression ratio enhances engine efficiency and performance.
  • Precision Fit: Custom-engineered to fit BMW S14B23 engines perfectly, ensuring easy installation.
  • Enhanced Engine Response: Delivers quicker throttle response for an engaging driving experience.

Upgrade your BMW S14B23 engine with JE Pistons and experience the difference in power and performance.

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JE Piston - Corporate Logo
T#:33713149
Part#: 321357S
In Stock at Vendor
$ 251.99 USD
Free Shipping on orders $49 and up

Key Benefits:

  • 8.5:1 compression ratio for optimal performance in turbocharged or high-boost setups
  • 93.60 mm bore for precise engine fitment and improved displacement
  • 1.260 in. compression height and -23.10 CC volume for efficient combustion
  • Forged construction for enhanced strength and resistance to high temperatures
  • Designed specifically for BMW S14B23 engines, including the E30 M3
  • Available through Turner Motorsport, a trusted source for BMW performance parts
  • Suitable for motorsport and high-performance street applications
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NOCO - Corporate Logo
T#:2498430
Part#: GBX75
Ships in 8 Business Days
22% off MSRP $ 319.99

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

$ 249.99 USD
Free Shipping
22% off MSRP
$ 319.99

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

$ 249.99 USD
Free Shipping

The NOCO Boost X GBX75 is a portable lithium jump starter crafted for 12-volt batteries in vehicles with gasoline engines up to 8.5 liters and diesel engines up to 6.5 liters. This versatile tool is suitable for a wide array of vehicles, including cars, motorcycles, trucks, ATVs, boats, RVs, vans, SUVs, tractors, and more. Featuring an all-new design, the GBX75 offers extreme jump-starting power, ensuring robust engine starts with ease. With a rating of 2500 amps, this portable lithium car battery jump starter delivers maximum energy with each start. It's not just an upgrade; it's part of our new Extreme Series, delivering exceptional performance and reliability.


Features:

  • Equipped with USB-C technology that, combined with power delivery, gives you lightning-fast recharges. Completely recharges in just 1.8-hours, or go from 0% to jump starting in just 5-minutes of charge.
  • Charge everything with USB-C Power Delivery. Its internal power bank provides 60-watts of power - both in and out - to effortlessly power your favorite USB-C devices, like phones, tablets, laptops, wearables, and more.
  • We took our UltraSafe technology and made it better. It's still our simple, mistake-free design featuring spark-proof technology and reverse polarity protection, but with enhanced thermal efficiency and power management to provide better performance and longer battery life.
  • It's one of the most versatile lithium jump starters ever. Jump start all vehicle types, including cars, motorcycles, trucks, ATVs, boats, RVs, vans, SUVs, tractors, and more for up to 8.5-liter gasoline and 6.5-liter diesel engines.


WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects, and/or reproductive harm. See above warning label as well as http://www.p65warnings.ca.gov for further information on Proposition 65 warnings.

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Genuine BMW - Corporate Logo
T#:42767
Part#: 13641731357
Ships in 9 Business Days
6% off MSRP $ 264.99

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

$ 249.99 USD
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6% off MSRP
$ 264.99

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

$ 249.99 USD
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Genuine BMW Injection Valve - Lucas
This item fits the following BMW Chassis:
E30,E34,E38

Fits BMW Engines including:
M20,M70,M73,S70


VAC Motorsports - Corporate Logo
T#:638307
Part#: VAC-HPRBS-S14STD
Ships on Sep 16, 2026
$ 249.99 USD
Free Shipping on orders $49 and up
VAC Rod Bearing Sets are specially coated to reduce friction to a minimum; enabling lower temps and faster revolutions in your expensive S14 engine. The coated bearings are thermal breakdown resistant, helping to prevent premature engine failures under stress when things are most critical. The rod bearing area is a common stress area in the S14, these bearings can last much longer than any normal bearing sets and are used in all of VAC's highest performance BMW engine builds. These bearings have become a favorite product of all of VAC's race and engine building customers around the globe who have reported unparalleled wear characteristics under all conditions. Made for VAC by the same company who manufactures for the US military, NASCAR teams, and other customers that require "mission-critical" quality. If you are looking for high-performance rod bearings, this is the set for your S14. VAC Tech Notes: As with all bearings, please check your tolerances and size before installation. Due to the specialized tools needed, professional install recommended. There are no returns available on any engine bearings.
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Karlyn - Corporate Logo
T#:381414
Part#: 12121311735
Ships in 6 Business Days
$ 249.99 USD
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$ 249.99 USD
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Complete set of plug wires

Canton Racing - Corporate Logo
T#:590562
Part#: 24-270X
Ships on Sep 21, 2026
17% off MSRP $ 297.60

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

$ 248.00 USD
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17% off MSRP
$ 297.60

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

$ 248.00 USD
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ECS - Corporate Logo
T#:585720
Part#: 11211706847WPCKT
In Stock
Sale - Save 3% $ 250.99

This product was last offered at the strikethrough price on
06-14-2026

$ 243.46 USD
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Sale - Save 3%
$ 250.99

This product was last offered at the strikethrough price on
06-14-2026

$ 243.46 USD
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What's better than using new crank bearings in your next engine build? WPC-treated bearings! What is WPC, you ask? WPC is a surface treatment that reduces friction and adds strength - two improvements that benefit internal engine components. Ultra-fine particles are fired at the surface at very high speeds, like shot-peening - but much, much smaller. The parts come out smoother and stronger due to thermal discharge. The two largest enemies of any high-performance engine are heat and friction - and WPC has found a way to reduce both. What are you waiting for? Use WPC-treated bearings on your next engine build or crank service!
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Genuine BMW Temperature Sensor
For vehicles with a production date from 01/1983
Genuine BMW - Corporate Logo
T#:200307
Part#: 13621362599
Ships in 4 Business Days
5% off MSRP $ 255.99

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

$ 241.99 USD
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5% off MSRP
$ 255.99

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

$ 241.99 USD
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Genuine BMW Temperature-Time Switch

Genuine BMW - Corporate Logo
T#:378367
Part#: 51711380391KT
Ships in 3 Business Days
$ 241.99 USD
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$ 241.99 USD
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Active Autowerke - Corporate Logo
T#:57616348
Part#: RTF-1L
Ships in 3 Business Days
New Item
$ 240.00 USD
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$ 240.00 USD
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Rotrex superchargers utilize a unique traction drive system that sets it apart from other centrifugal-style superchargers. For best performance, Rotrex recommends replacing this fluid every 50,000 miles. This bottle of traction fluid is plenty enough for one supercharger service (typically 750ml).
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DeatschWerks - Corporate Logo
T#:5389791
Part#: 9-401-1001
In Stock at Vendor
$ 239.00 USD
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$ 239.00 USD
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The DW400 surpasses the 400LPH benchmark by delivering an industry leading in-tank flow of 415LPH at 40psi. Even more importantly, the DW400 delivers 31% more flow than its nearest competitor, the Walbro 450 "e85", at pressures between 70 and 100 psi. The DW400 has a 46mm diameter width and is compatible with pump gas, e85, and race fuels. The pump is also compatible with pulse width modulated pump drivers. The pump ships with a universal fitment kit which includes fuel hose, clamps, electrical harness, and filter. As with all DW products, the pump is warrantied for 3-yrs to the original purchaser.
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Braille - Corporate Logo
T#:558038
Part#: B2015
Ships in 6 Business Days
$ 237.99 USD
Free Shipping on orders $49 and up
When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your cars operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind! The B2015 is Braille's most popular non-carbon racing battery and is able to start larger engines easily for racing and offers daily driving capability for most 4 and 6 cylinders engine vehicles. Physical Specifications: BCI Group: All sizes Weight: 15lbs / 6.8kg Length: 6.8" / 173mm Width: 3.4" / 86mm Height: 6.1" / 155mm Polarity: Right Side Positive Performance Specifications: Voltage: 12 Full Charge Voltage: 13.2 Pulse Cranking Amps (PCA): 1067 Amp Hour (AH): 21 Life Cycle @ 10% DOD: 3100 *THIS BATTERY REQUIRES A CUSTOM MOUNTING SOLUTION. The size and weight are significantly smaller than a stock battery and will not be held in place by the stock battery mount*
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Genuine BMW - Corporate Logo
T#:181013
Part#: 12111715905
Ships in 4 Business Days
2% off MSRP $ 237.99

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

$ 232.99 USD
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2% off MSRP
$ 237.99

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

$ 232.99 USD
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Orignal BMW DISTRIBUTOR CAP

we also stock this item as Bosch 03195

Fits BMW Engines including:
M20,M30,M70,M73,M73N,S38,S70

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BMW E30 Fuel Pump Assembly
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:384275
Part#: 16141180233
In Stock
$ 392.99

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

$ 232.99 USD
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$ 232.99 USD
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A new fuel pump assembly from URO to get your vehicle back in action

Kingsborne - Corporate Logo
T#:27238722
Part#: 924-1316
Ships on Sep 16, 2026
$ 232.99 USD
Free Shipping on orders $49 and up

7mm High-Performance Ignition Wire Sets are manufactured to O.E. specifications and with O.E components. All wire sets have genuine Bremi connectors and the highest grade of silicone wire available. These have 7mm ignition wires.

This item fits the following BMWs: 1988-1991 E30 BMW M3

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Genuine BMW - Corporate Logo
T#:367776
Part#: 12111312160
Ships in 4 Business Days
2% off MSRP $ 237.99

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

$ 232.99 USD
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2% off MSRP
$ 237.99

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

$ 232.99 USD
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Glyco Main Bearing Set (Standard) - E21, E28, E30
Features All Single-Tang Main Bearings for Earlier M20 Engines
Glyco - Corporate Logo
T#:1196183
Part#: 11211722342
In Stock
$ 259.99

This product was last offered at the strikethrough price on
05-03-2026

$ 231.99 USD
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$ 231.99 USD
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Cometic - Corporate Logo
T#:26738376
Part#: C4394-040
Back Ordered
$ 229.99 USD
Free Shipping on orders $49 and up
Multi-Layer Steel gaskets are comprised of multiple embossed layers of both proprietary high-temperature coated and uncoated stainless steel, requiring less clamp load, creating less bore distortion, and conforms load distribution across the sealing area. The embossed outer layers of our head gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The MLS Gasket (Multi-Layer Steel) features an active combustion seal on multiple layers. The stainless steel outer layers utilize FKM (Viton®) rubber coating, a high-temperature and chemical-resistant polymer. A topcoat of PTFE aids in resistance to fret and increased cold sealing.
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Genuine BMW - Corporate Logo
T#:205376
Part#: 12121722570
In Stock
Sale - Save 8% $ 246.99

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

$ 226.99 USD
Limited Qty Sale
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Sale - Save 8%
$ 246.99

This product was last offered at the strikethrough price on
05-02-2026

$ 226.99 USD
Limited Qty Sale
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Genuine Bmw Pulse Generator -12121722570

Genuine BMW - Corporate Logo
T#:366899
Part#: 12141730773
Ships in 4 Business Days
5% off MSRP $ 240.00

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

$ 226.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 240.00

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

$ 226.99 USD
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This flywheel position sensor provides the ECU with the engine speed signal. There are 2 of these sensors per car. Sold individually.
When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1986-1987 E30 BMW 325e 325es
1986-12/1986 E28 BMW 528e

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NOCO - Corporate Logo
T#:855031
Part#: GENPRO10X2
Ships in 8 Business Days
21% off MSRP $ 284.99

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

$ 224.99 USD
Free Shipping on orders $49 and up
21% off MSRP
$ 284.99

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

$ 224.99 USD
Free Shipping on orders $49 and up

The GENPRO10X2 is an upgraded version of our GEN2 with enhanced features. This model is 19% smaller yet delivers 33% more power, making it one of the most high-performing onboard marine battery chargers NOCO has ever produced. It's a two-bank onboard battery charger with a 20-amp rating (10 amps per bank) designed for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries. You can independently charge and control each battery bank using selectable charging modes such as 12V, 12V AGM, 12V Lithium, and 12V Repair Mode, suitable for all types of lead-acid and lithium-ion batteries.


Features: 

  • A two-bank on-board battery charger rated at 20-amps for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries.
  • Independently charge and control each battery bank with selectable charging modes - including 12V, 12V AGM, 12V Lithium, and 12V Repair Mode - for all types of lead-acid batteries.
  • An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
  • Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
  • Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
  • It's not just a trickle charger; it's an advanced battery maintainer. A fully automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge.
  • A simplified mounting system allows for quick and easy installations in any direction - even up-side-down - with an integrated anti-vibration backing to isolate shock, vibration, and noise.
  • A fully-sealed and waterproof onboard battery charger with an ingress protection rating of IP68, but has survived brutal life cycle testing, including thousands of hours underwater.


WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects, and/or reproductive harm. See above warning label as well as http://www.p65warnings.ca.gov for further information on Proposition 65 warnings.

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THINKCAR - Corporate Logo
T#:4347115
Part#: 303020049
In Stock
$ 264.99

This product was last offered at the strikethrough price on
08-24-2026

$ 221.99 USD
Limited Qty Sale
Free Shipping
$ 264.99

This product was last offered at the strikethrough price on
08-24-2026

$ 221.99 USD
Limited Qty Sale
Free Shipping

Universal ThinkCheck M70

The Universal ThinkCheck M70 offers comprehensive diagnostic capabilities for a wide range of vehicle systems, including ECM, TCM, ABS, SRS, BCM, IC, and AC. Featuring a 10-mode function, this advanced tool provides real-time diagnostics and supports quick software updates through WiFi connectivity. Ideal for vehicles from 1996 and newer, it comes with a 5-inch touch screen and offers numerous features to streamline vehicle maintenance and diagnostics.

Benefits:

  • Comprehensive Diagnostic Functions: Covers ECM, TCM, ABS, SRS, BCM, IC, and AC with 10-mode functionality.
  • WiFi Connectivity: Enables one-click software updates and automatic vehicle health diagnostic reports.
  • Versatile Compatibility: Supports vehicles from 1996 and newer with 16-pin OBD II protocol.
  • Enhanced Data Management: Offers DTC lookup, real-time PCM data stream reading, and data record and playback.
  • User-Friendly Interface: Features a 5-inch LCD touch screen and a fast 7.0 Android system for efficient operation.
  • Long-Lasting Battery: Equipped with a 6100mAh battery for extended use.
  • Lifetime Free Service: Includes 5 resets and free updates for ongoing maintenance.
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Genuine BMW - Corporate Logo
T#:278
Part#: 11311317335
Ships Today
$ 220.99 USD
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$ 220.99 USD
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S14 S38 Timing Chain Tensioner Rail (Small). We typically see this in need of replacement in the 80-100,000 mile mark. We recommend replacing this when you replace your timing chain or when performing an engine rebuild.

This item fits the following BMWs:
1987-1991 E30 BMW M3
1988 E28 BMW M5
1991-1995 E34 BMW M5
1987-1989 E24 BMW M6
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Genuine BMW - Corporate Logo
T#:194053
Part#: 11121734213
Ships in 8 Business Days
3% off MSRP $ 226.99

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

$ 220.99 USD
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3% off MSRP
$ 226.99

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

$ 220.99 USD
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Genuine BMW Cylinder Head Gasket Asbestos-Free - 1,50Mm

This item fits the following BMW Chassis:
E30

Fits BMW Engines including:
M10

Kingsborne - Corporate Logo
T#:4033
Part#: 12-7912-8
Ships on Sep 16, 2026
$ 217.99 USD
Free Shipping on orders $49 and up
High-Performance spark plug wires, to help deliver a perfect, uninterrupted spark impulse to each cylinder of your BMW's engine. Old wires will impair spark, reduce performance, and cause cylinder misfires. We recommend changing your ignition wires every 50k miles, or as soon as your wires show signs of deteriation.

This item fits the following BMWs:
1990-1991 E30 BMW 318i 318is 318ic with M42 engine
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