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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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Bremi - Corporate Logo
T#:340638
Part#: 12131703228
In Stock
$ 48.36

This product was last offered at the strikethrough price on
04-27-2026

$ 36.40 USD
Free Shipping on orders $49 and up
$ 36.40 USD
Free Shipping on orders $49 and up
Bremi is one of the most trusted names in ignition coils among BMW enthusiasts. We trust these in our vehicles. Replace yours and get your BMW running right today!
Bremi - Corporate Logo
T#:340701
Part#: 12139066468
Ships in 1 Business Day
$ 65.99

This product was last offered at the strikethrough price on
04-09-2026

$ 55.99 USD
Free Shipping on orders $49 and up
$ 55.99 USD
Free Shipping on orders $49 and up

Ignition coils are key to the efficiency and performance of your BMW. With a faulty coil the spark plug is not burning the air/fuel mixture properly and that can lead to problems anywhere in the engine and exhaust (including catalytic converters and O2 sensors). Problems with one or more coils will cause a fault code but not always a check engine light. A misfire code may be related to an ignition coil but could be from other things as well. Sometimes a visual inspection of a coil and coil boot will give an indication of a failure. You can also move coils around to different cylinder banks to see if the misfire code follows a suspect coil. We suggest always having one or two coils on hand to keep as spares.

This Bremi coil was used in M42, M50, M50tu, and M60 engines. BMW has made numerous changes to ignition coil part numbers in recent years but has approved this part number to work in the vehicles listed below. This part number replaces previous BMW part numbers 12131703359, 12131731884, 12131730765, 12131748394, 12131729842, 12131726178, 12131726177, 12131727108, 12131734468, and 12131748395.

Sold per coil. Does not includes connecting boot. If in need of connecting boots please purchase part number 12139067831

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!


This item fits the following BMWs:
1990-1991 E30 BMW 318i 318is 318ic
1991-1995 E36 BMW 325i 325i 325ic M3
1991-1995 E34 BMW 525i 530i 540i
1992-1994 E38 BMW 740i 740il
1995 E38 BMW 740i 740il
1991-1996 E31 BMW 840i 840ci

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N54 & E8x/E9x N55 Mosselman Billet Oil Thermostat
For Gasket/Install kit see T#4799665
Mosselman Turbosystems - Corporate Logo
T#:4621131
Part#: OTN54.T85
In Stock
$ 379.99 USD
Free Shipping
$ 379.99 USD
Free Shipping
The N54 engine is no stranger to oil cooling problems, that’s why we recommend installing the MSL Oil Thermostat. The standard oil thermostat will reach around 120 degrees Celsius with a normal driving style. The MSL Oil Thermostat will open at a lower temperature than the standard oil thermostat (at 85 degrees Celsius) and will keep the temperature stable between 95 and 105 degrees Celsius. Installing the MSL thermostat ensures a cooler oil temperature which will result in more stable performance, but above all this improves the reliability of the engine. It is recommended to install the thermostat, especially for cars that are tuned.
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Bremi - Corporate Logo
T#:340576
Part#: 12131712219
Ships in 2 Business Days
$ 28.78

This product was last offered at the strikethrough price on
04-09-2026

$ 25.43 USD
Free Shipping on orders $49 and up
$ 25.43 USD
Free Shipping on orders $49 and up
Get your engine back to peak performance with a new ignition coil.

Bremi - Corporate Logo
T#:361156
Part#: 12121720529
In Stock
$ 181.99 USD
Free Shipping
$ 181.99 USD
Free Shipping
Includes ignition coil wire and conduit
Bremi - Corporate Logo
T#:402843
Part#: 12137841556
In Stock
$ 107.59

This product was last offered at the strikethrough price on
06-10-2026

$ 91.99 USD
Limited Qty Sale
Free Shipping
$ 107.59

This product was last offered at the strikethrough price on
06-10-2026

$ 91.99 USD
Limited Qty Sale
Free Shipping

Ignition coils are key to the efficiency and performance of your BMW. With a faulty coil the spark plug is not burning the air/fuel mixture properly and that can lead to problems anywhere in the engine and exhaust (including catalytic converters and O2 sensors). Problems with one or more coils will cause a fault code but not always a check engine light. A misfire code may be related to an ignition coil but could be from other things as well. Sometimes a visual inspection of a coil and coil boot will give an indication of a failure. You can also move coils around to different cylinder banks to see if the misfire code follows a suspect coil. We suggest always having one or two coils on hand to keep as spares.
 

This item fits the following BMWs:
2006-2010 E60 BMW M5
2006-2010 E63 BMW M6

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Bremi - Corporate Logo
T#:597425
Part#: 12138611236
Ships in 1 Business Day
$ 58.99

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

$ 50.99 USD
Free Shipping on orders $49 and up
$ 50.99 USD
Free Shipping on orders $49 and up
Bremi - Corporate Logo
T#:384317
Part#: 12111715906
In Stock at Vendor
$ 59.99

This product was last offered at the strikethrough price on
08-11-2026

$ 45.99 USD
Free Shipping on orders $49 and up
$ 45.99 USD
Free Shipping on orders $49 and up
Cure your misfire problems

Bremi - Corporate Logo
T#:34683819
Part#: 12147539165
In Stock
$ 49.99

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

$ 44.99 USD
Free Shipping on orders $49 and up
$ 44.99 USD
Free Shipping on orders $49 and up

Bremi Camshaft Position Sensor - Intake is an essential component for optimizing your BMW’s engine timing and performance. Manufactured by Bremi and available through Turner Motorsport, this high-quality intake camshaft position sensor precisely monitors the camshaft’s rotation and communicates critical data to the engine control unit. By ensuring accurate timing for the intake valves, this sensor helps maintain optimal fuel efficiency, smooth idling, and reduces emissions. Replacing a faulty camshaft position sensor can prevent common engine issues such as misfires, stalling, or rough idling.

The Bremi Camshaft Position Sensor - Intake meets OEM specifications, providing a reliable, durable solution that’s designed to withstand high temperatures and vibration for long-lasting performance.

Benefits:

Improves Engine Timing: Provides precise timing data for smooth, responsive engine performance Enhances Fuel Efficiency: Optimizes fuel use, saving on fuel costs and reducing environmental impact Reduces Emissions: Helps maintain cleaner combustion and lowers vehicle emissions Prevents Engine Issues: Minimizes risk of misfires, rough idling, and stalling, prolonging engine life Easy to Install: Direct fit for BMW models, making replacement quick and hassle-free Bremi Camshaft Position Sensor - Intake is the perfect choice to maintain your BMW’s high performance and reliability.

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Beru - Corporate Logo
T#:584875
Part#: 12218591724
In Stock at Vendor
$ 185.00

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

$ 129.99 USD
Free Shipping
$ 129.99 USD
Free Shipping
Sends power to the glow plugs to preheat them for ignition.
Active Autowerke Power Pulley Kit - E9x M3
For vehicles with production date 2007-5/2008
Active Autowerke - Corporate Logo
T#:397285
Part#: 13-001
Ships in 3 Business Days
5% off MSRP $ 399.00

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

$ 379.99 USD
Free Shipping
5% off MSRP
$ 399.00

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

$ 379.99 USD
Free Shipping
Easy to install - reduces parasitic losses from belt driven auxiliary components. Engine crankshaft pulley remains the same, this modification simply unleashes untapped potential from your vehicle. Expect to see gains around 10 RWHP from your S65. All BMW power pulleys included, including alternator, water pump, and power steering pulleys.
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AUTOTECKNIC - Corporate Logo
T#:39971047
Part#: BM-0007
In Stock
$ 64.99 USD
Free Shipping on orders $49 and up
a precision-engineered, lightweight dry carbon fiber upgrade designed to enhance the engine bay of compatible BMW models with an aggressive motorsport look and easy OEM-style installation.


Bremi - Corporate Logo
T#:598679
Part#: 12141740959
In Stock at Vendor
$ 66.99

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

$ 64.99 USD
Free Shipping
$ 64.99 USD
Free Shipping
Bremi - Corporate Logo
T#:379842
Part#: 12121705718
Ships in 3 Business Days
$ 135.99 USD
Free Shipping
$ 135.99 USD
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Original equipment replacement wire set
BMW S55 Upgrade Turbocharger Set, MSL65-80
Available for the BMW F8x (M2 Competition, M3 and M4)
Mosselman Turbosystems - Corporate Logo
T#:12872412
Part#: 10210019
In Stock
2% off MSRP $ 5,098.00

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

$ 4,978.00 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 5,098.00

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

$ 4,978.00 USD
Free Shipping on orders $49 and up
Mosselman BMW S55 Upgrade Turbocharger Set, MSL65-80 (~ 650-800hp)

AUTOTECKNIC - Corporate Logo
T#:39971051
Part#: BM-0032
In Stock
$ 64.99 USD
Free Shipping on orders $49 and up
A premium dry carbon fiber engine bay upgrade that enhances the performance styling of compatible BMW models with a sleek, UV-resistant finish and easy OEM-style installation.

AUTOTECKNIC - Corporate Logo
T#:46203538
Part#: ATK-BM-0408-V2
Ships in 7 Business Days
$ 795.00 USD
Free Shipping on orders $49 and up
Transform your G8X engine bay into a true centerpiece with the AutoTecknic Version II Dry Carbon Fiber Engine Cover. Expertly crafted using pre-preg dry carbon and cured in an autoclave, this cover offers a lightweight yet durable upgrade that elevates both performance and aesthetics. The precision 3K twill weave carbon delivers a flawless, uniform pattern, enhanced by a deep gloss UV-resistant clear coat for long-lasting protection against fading and yellowing. What sets this Version II cover apart is the bold tri-colored ///M-inspired stripes, perfectly integrated into the design. Combined with the iconic ///M emblem, the cover captures BMW’s motorsport heritage while adding a modern, aggressive edge to your engine bay. Every detail is engineered for a seamless OEM fit—simply transfer the factory M emblem for a complete installation. Upgrade your G80 M3 or G82/ G83 M4 with this stunning centerpiece and let your engine bay reflect the same dynamic spirit as the car itself.
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Bremi - Corporate Logo
T#:591857
Part#: 12121360842
Ships in 1 day
$ 58.99 USD
Free Shipping on orders $49 and up
Complete set of ignition wires

Mosselman Turbosystems - Corporate Logo
T#:37183641
Part#: 030210062BLK
Ships on Sep 8, 2026
$ 459.00 USD
Free Shipping on orders $49 and up
The S55 engine is no stranger to oil cooling problems, that’s why we recommend installing the MSL Oil Thermostat. The standard oil thermostat will reach around 120 degrees Celsius with a normal driving style. The MSL Oil Thermostat will open at a lower temperature than the standard oil thermostat (at 85 degrees Celsius) and will keep the temperature stable between 95 and 105 degrees Celsius. Installing the MSL thermostat ensures a cooler oil temperature which will result in more stable performance, but above all this improves the reliability of the engine. It is recommended to install the thermostat, especially for cars that are tuned.
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OMP - Corporate Logo
T#:1614
Part#: EA-462
In Stock
$ 65.00 USD
Free Shipping
$ 65.00 USD
Free Shipping
OMP Battery Cut Off Switch / Kill Switch, for use in racecars as an emergency "kill switch", to depower the electrical system in the event of a crash or other emergency. This cut off switch is FIA approved, has 6 poles and alternator protection, as well as a removable key.
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AUTOTECKNIC - Corporate Logo
T#:39971046
Part#: BM-0006-BCG
In Stock
$ 65.00 USD
Free Shipping on orders $49 and up
AutoTecknic - Carbon Competition Fuel Cap Cover - Various BMW and MINI Models is a premium exterior upgrade crafted from genuine carbon fiber, designed to enhance the aggressive styling and performance aesthetic of compatible BMW and MINI vehicles with an easy, OEM-fit installation.
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Beru - Corporate Logo
T#:23383348
Part#: 12137510738
In Stock
$ 92.99

This product was last offered at the strikethrough price on
08-17-2026

$ 75.02 USD
Free Shipping on orders $49 and up
$ 75.02 USD
Free Shipping on orders $49 and up
Is your Mini experiencing sluggish acceleration or misfires? It might be time to check the coil pack. The coil pack plays a crucial role in the ignition system and can affect engine performance. Replace it as necessary or ideally every 100,000 miles to keep your Mini's ignition system operating smoothly.
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Bremi - Corporate Logo
T#:14355
Part#: 12111312160
Ships in 2 Business Days
$ 132.85

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

$ 115.99 USD
Limited Qty Sale
Free Shipping
$ 132.85

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

$ 115.99 USD
Limited Qty Sale
Free Shipping
This is a Bremi brand distributor cap for E30 M3 with S14 engine. Bremi is an OEM supplier to BMW of ignition components. This part number is an direct replacement for Bosch #03241.We recommend getting the corresponding Bremi distributor rotor # 12111312157 at the same time.

This item fits the following BMWs:
1988-1991 E30 BMW M3
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Bremi - Corporate Logo
T#:2027109
Part#: 13627639278
Ships in 1 Business Day
$ 45.99

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

$ 40.99 USD
Free Shipping on orders $49 and up
$ 40.99 USD
Free Shipping on orders $49 and up


Bremi - Corporate Logo
T#:27871806
Part#: 13627806782
Ships in 2 Business Days
$ 71.99

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

$ 63.99 USD
Free Shipping on orders $49 and up
$ 63.99 USD
Free Shipping on orders $49 and up
The crankshaft position sensor tells the computer whether the timing is correct in the engine. Symptoms such as no start or extended cranking times can be a telltale sign that you need to replace your crankshaft positioning sensor that is either faulty or damaged.
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Active Autowerke - Corporate Logo
T#:397307
Part#: 12-032
Ships in 3 Business Days
$ 240.00 USD
Free Shipping
$ 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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Bremi - Corporate Logo
T#:590416
Part#: 12141485845
In Stock
$ 45.98

This product was last offered at the strikethrough price on
07-15-2026

$ 42.04 USD
Free Shipping on orders $49 and up
$ 42.04 USD
Free Shipping on orders $49 and up

Bremi - Corporate Logo
T#:371076
Part#: 12121307171
In Stock at Vendor
$ 419.50 USD
Free Shipping
$ 419.50 USD
Free Shipping
Includes ignition coil wire and conduit

Active Autowerke - Corporate Logo
T#:397235
Part#: 12-001
Ships in 10 Business Days
5% off MSRP $ 8,499.00

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

$ 8,074.99 USD
Free Shipping
5% off MSRP
$ 8,499.00

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

$ 8,074.99 USD
Free Shipping

Since getting their start in 1981, Active Autowerke has earned a well-respected reputation in the BMW community for engineering high-quality power solutions for popular BMW models. For over three decades, only one name has remained at the top of the BMW performance parts industry and Active Autowerke have built a lasting reputation as leaders in custom BMW tuning and accessories.

This supercharger kit will produce 310 horsepower and 300 ft.lbs. of torque on your BMW, while retaining platform integrity and daily driveability. Unique to the design of the Rotrex supercharger is the traction drive system, which eliminates the lag often found in other centrifugal supercharger setups. Power delivery is smooth and dependable, and 100% reversible to stock if you so choose, since each system is designed as a self-contained unit. Additionally, this kit can be expanded to deliver even more horsepower with a few simple modifications. 


Key Features

  • Rotrex C38-81 Supercharger
  • Mounting bracket, pulleys and belt
  • 6 larger high-flow fuel injectors
  • Active Autowerke Air Filter
  • Active Autowerke Dyno-Tuned Software
  • All mounting hardware, plumbing, hoses and clamps
  • Illustrated instruction manual & installation guide
  • 2 Year Warranty with free tech support


Performance Specs

Power              :      310 BHP @ 6900 rpm
Torque             :      300 ft-lbs @ 5700 rpm
Boost Level      :      7.0 psi

This part fits the following BMWs:
1992-1999 E36 328i 328is 

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Active Autowerke - Corporate Logo
T#:397239
Part#: 12-003
Ships in 10 Business Days
5% off MSRP $ 8,499.00

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

$ 8,074.00 USD
Free Shipping
5% off MSRP
$ 8,499.00

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

$ 8,074.00 USD
Free Shipping
360HP/300TQ - a complete power solution for your M3!

Active Autowerke - Corporate Logo
T#:340092
Part#: AARSC-E36M3
Ships in 10 Business Days
Starting at $ 8,074.00 USD
Free Shipping
Starting at $ 8,074.00 USD
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No one buys an M3 because they like limits. This carefully engineered kit matches the Rotrex C38 supercharger with the perfect hardware, software and tuning to take the factory 240 HP straight up to 360 HP (with the potential for even more power with additional upgrades). Best of all, if your craving for more power is still insatiable, there is a higher upgrade Level 2 featuring more boost and a front mounted air to air intercooler. The Active Autowerke supercharger systrem is truly modular and fully upgradeable. Running on 91-93 octane pump fuel with full emissions system intact, this system has stood the test of real world conditions and delivers thrill-worthy performance on demand while still retaining that BMW feel for a comfortable daily commute.
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Active Autowerke - Corporate Logo
T#:28504210
Part#: 12-005
Ships in 3 Business Days
5% off MSRP $ 14,125.00

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

$ 13,418.99 USD
Free Shipping
5% off MSRP
$ 14,125.00

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

$ 13,418.99 USD
Free Shipping

Active Autowerke, established in 1981, has become a highly regarded name in the BMW community, known for their top-notch power solutions for various BMW models. This supercharger kit they offer packs a punch, capable of generating over 400 horsepower for your BMW while ensuring the vehicle's structural integrity and suitability for daily driving. What sets this kit apart is the Rotrex supercharger's design, featuring a traction drive system that eliminates the lag commonly associated with other centrifugal superchargers. This results in a smooth and reliable power delivery experience.

Key components of the kit include the Rotrex C38-92 trim supercharger, an Active Autowerke front-mount air-to-air intercooler, a high-flow fuel pump, supercharger brackets, pulleys, and belts, six high-flow fuel injectors, an Active Autowerke air filter, dyno-tuned software, and all necessary mounting hardware, plumbing, hoses, and clamps. Additionally, the kit comes with an illustrated instruction manual and installation guide, ensuring a straightforward installation process. Active Autowerke also offers a 2-year warranty along with free technical support for added peace of mind.

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Active Autowerke - Corporate Logo
T#:397296
Part#: 12-023
Ships in 10 Business Days
5% off MSRP $ 11,249.00

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

$ 10,686.99 USD
Free Shipping
5% off MSRP
$ 11,249.00

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

$ 10,686.99 USD
Free Shipping

Since getting their start in 1981, Active Autowerke has earned a well-respected reputation in the BMW community for engineering high-quality power solutions for popular BMW models. This supercharger kit will produce 525 horsepower and 335 ft.lbs. of torque on your BMW, while retaining platform integrity and daily driveability. Unique to the design of the Rotrex supercharger is the traction drive system, which eliminates the lag often found in other centrifugal supercharger setups. Power delivery is smooth and dependable, and 100% reversible to stock if you so choose, since each system is designed as a self-contained unit.

Kit features:

  • Rotrex 92 trim supercharger running 7 PSI of boost
  • Supercharger bracket, pulleys, & belt
  • Self-contained oiling system with front-mount oil cooler
  • 6 high-flow fuel injectors
  • Colder heat range spark plugs
  • Active Autowerke  Generation 7 intake manifold with dual bypass valve
  • Front mount air-to-air intercooler
  • Active Autowerke air filter
  • Active Autowerke dyno-tuned software
  • All mounting hardware, plumbing, hoses, & clamps
  • Illustrated instruction manual & installation guide
  • 2 year warranty with free tech support

Performance Specs:

  • Power   :   525 BHP @ 7650 rpm
  • Torque   :   335 ft/lbs @ 5400 rpm
  • Boost Level   :   7-8 psi
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Active Autowerke - Corporate Logo
T#:340094
Part#: AASC-E9XM3
Ships in 10 Business Days
Starting at $ 9,995.00 USD
Starting at $ 9,995.00 USD
The advanced design and sleek features of the Active Autowerke Supercharger System include a front mount air-to-air intercooler system with a separate oil cooler for the supercharger unit's independent oil system. The Active Autowerke Supercharger Plenum replaces the factory air box and is designed to have an OEM-type look with custom finishes available at the customer's request. The Active Autowerke Supercharger Plenum has been designed with eight high-flow velocity stacks, and large three-inch intercooler piping to supply cooled air.
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Bremi - Corporate Logo
T#:47644906
Part#: 13627593624
Ships in 2 Business Days
$ 193.99

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

$ 173.99 USD
Free Shipping on orders $49 and up
$ 173.99 USD
Free Shipping on orders $49 and up
Bremi - Corporate Logo
T#:584515
Part#: 11856T
Ships in 1 day
$ 53.79 USD
Free Shipping on orders $49 and up
$ 53.79 USD
Free Shipping on orders $49 and up


Mosselman Turbosystems - Corporate Logo
T#:12872415
Part#: 10210020
Ships in 6 Business Days
$ 5,378.00 USD
Free Shipping on orders $49 and up
This Mossleman upgraded turbocharger will bring reliable high performance to your S58 engine! Depending on modifications done to the vehicle, this turbo can deliver up to 950hp!
Bremi - Corporate Logo
T#:556693
Part#: 12121722253
Ships in 6 Business Days
$ 214.99 USD
Free Shipping
$ 214.99 USD
Free Shipping
Complete OEM style with plastic loom to keep wires nice & neat
Bremi - Corporate Logo
T#:369620
Part#: 12121247523
Ships on Sep 8, 2026
$ 176.99 USD
Free Shipping
$ 176.99 USD
Free Shipping
Replace worn wires and restore performance.

Mosselman Turbosystems - Corporate Logo
T#:37183640
Part#: 030210063RED
Special Order: No Guaranteed ETA
$ 459.00 USD
Free Shipping on orders $49 and up
The S55 engine is no stranger to oil cooling problems, that’s why we recommend installing the MSL Oil Thermostat. The standard oil thermostat will reach around 120 degrees Celsius with a normal driving style. The MSL Oil Thermostat will open at a lower temperature than the standard oil thermostat (at 85 degrees Celsius) and will keep the temperature stable between 95 and 105 degrees Celsius. Installing the MSL thermostat ensures a cooler oil temperature which will result in more stable performance, but above all this improves the reliability of the engine. It is recommended to install the thermostat, especially for cars that are tuned.
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Beru - Corporate Logo
T#:14982199
Part#: 121200405516KT
Back Ordered
$ 95.99 USD
Free Shipping on orders $49 and up
$ 95.99 USD
Free Shipping on orders $49 and up
Bremi - Corporate Logo
T#:556687
Part#: 12121727840
Back Ordered
$ 167.99 USD
Free Shipping
$ 167.99 USD
Free Shipping
OEM plug wires.

Beru - Corporate Logo
T#:596879
Part#: 12321350052
In Stock at Vendor
$ 41.99

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

$ 40.99 USD
Free Shipping on orders $49 and up
$ 40.99 USD
Free Shipping on orders $49 and up
If you are having issues with voltage peaking, lights fading in and out as your driving, or your battery keeps dying despite the car running, It could be the result of a faulty voltage regulator. Voltage regulators control the amount of power coming from the alternator.
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Beru - Corporate Logo
T#:46512968
Part#: 12122293697KT2
Ships in 1 Business Day
$ 82.99

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

$ 71.99 USD
Free Shipping on orders $49 and up
$ 71.99 USD
Free Shipping on orders $49 and up
Keep your engine running smooth and performing at its best by refreshing your plugs as part of your routine maintenance.

Bremi - Corporate Logo
T#:2925
Part#: 12139067831
In Stock
$ 10.99

This product was last offered at the strikethrough price on
04-03-2026

$ 7.13 USD
Free Shipping on orders $49 and up
$ 7.13 USD
Free Shipping on orders $49 and up
Sometimes a bad coil may just be a broken or damaged connector boot. This is especially true on cars with a leaking valve cover gasket where the oil has contamintated the rubber boot and the electrical parts inside. This boot can be replaced on its own without having to buy a whole new coil. This part is also useful if you purchased a coil that did not come with a new boot.

This boot works with the 12131748018 ignition coil only and fits the vehicles listed below.

Sold per boot/per coil.

This item fits the following BMWs:
1996-1998 E36 BMW 323is 323ic 328i 328is 328ic M3
1999-2000 E46 BMW 323i 323ci 328i 328ci
2001-2002 E46 BMW 325i 325ci 325xi 330i 330ci 330xi
1997-2003 E39 BMW 528i 540i M5
2001-2002 E39 BMW 525i 530i
1996-2001 E38 BMW 740i 740il 750il
1996-1999 E31 BMW 840ci 850ci
2000-2003 E53 BMW X5 4.4i X5 4.6is
2000-2002 E53 BMW X5 3.0i
1997-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
1998-2000 Z3 BMW Z3 M Roadster Z3 M Coupe
2000-2003 E52 BMW Z8
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Bremi - Corporate Logo
T#:375432
Part#: 12121289821
In Stock
11% off MSRP $ 9.99

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

$ 7.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
11% off MSRP
$ 9.99

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

$ 7.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
This is the rubber boot that goes over the plug end of the wires
Mosselman Turbosystems - Corporate Logo
T#:44359934
Part#: 010210013
In Stock
Sale - Save 5% $ 2,518.00

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

$ 2,392.10 USD
Free Shipping on orders $49 and up
Sale - Save 5%
$ 2,518.00

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

$ 2,392.10 USD
Free Shipping on orders $49 and up
The Mosselman Upgrade Turbocharger (MSL38-50) for the N20 PWG engine increases performance levels with proven reliability. Depending on the modifications done to the car and fuel type, this turbo set can deliver up to 500hp!
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Active Autowerke - Corporate Logo
T#:340093
Part#: AASC-E46M3
Ships in 10 Business Days
Starting at $ 7,995.00 USD
Starting at $ 7,995.00 USD
Race on Sunday, to sell on Monday. This old saying is indicative of the new Generation 8 supercharger system for the E46 M3. Through countless hours of testing, it has often been quoted that the true test has always been a race environment. What better venue than Brock Yates One Lap of America Race. With a rigorous 7,000 miles to be covered within a week, and to compete against the likes of Porsches, Corvettes, Nissan GTRs, this would be the testing grounds for the new Generation Active Autowerke Supercharger system. The Active Autowerke Generation 8 Supercharger System not only proved its worth by being the highest ranked BMW within the field, but also ranked 1st in its class..

The data and technology that made this winning combination is now being applied in the new Generation 8 of the Active Autowerke supercharged E46 M3 level 1. Reliability and power is needed if you want to be on the podium, and this new Generation 8 will deliver exactly that. Consistent, repeatable runs of over 415 WHP (525 engine horsepower) were also recorded on the Active Autowerke chassis dyno in hot 94 + degree Fahrenheit conditions with humidity in the 60% + range. These run conditions might be considered a deterrent and not really suited, but it is better knowing the horsepower numbers are under such conditions, since higher horsepower numbers will only increase as the temperature falls and the air becomes more dense.

Stage 1 Performance Specs:
Power : 525 BHP @ 7650 rpm
Torque : 335 ft/lbs @ 5400 rpm
Boost Level : 7-8 psi

Key Features:
  • Rotrex 92 Trim Supercharger
  • Active Autowerke Gen 7 Intake Manifold w/ Dual By Pass Valve
  • Front Mount Air to Air Intercooler
  • Turbo like speed with linear power delivery
  • Large Fuel Injectors
  • Supercharger Oil Cooler
  • Colder Heat Range Spark Plugs
  • High Performance AA Spec Green Filter
  • Active Autowerke High Performance Software
  • All Mounting Hardware, plumbing, hoses and clamps
  • Proven Horsepower gains even under extreme conditions
  • Installation Instructions included
  • 2 Year Limited Warranty
    Want even more power? Upgrade to the Stage 2 kit with Larger Intercooler & Fuel System.
    The stage 2 System boosts the S54's power output to over 600BHP and includes an upgraded fuel system (includes two fuel pumps, fuel filter, all new -6 lines, fuel pressure regulator, dead end fuel rail, upgraded injectors and all required fittings). This ugpraded fuel system is a must once reaching these increased boost levels due to the fact that the factory fuel system is simply inadequate at this level. The stage 2 system also use a larger front mount air to air intercooler and the Active Autowerke custom methanol injection system. NOTE: Level 2 supercharger system is designed and engineered to operate in conjunction with the Active Autowerke Water/Methanol system as an integral part of the kit. Reasons to incapacitate, isolate, turn off, or not installing this system can and will void all warranty and related claims associated to the proper function of the specified Active Autowerke supercharger system.

    Stage 2 Performance Specs:
    Power � : � 605 BHP @ 7000 rpm
    Torque � : � 395 ft/lbs @ 5400 rpm
    Boost Level � : � 11-12 psi

    Custom built to order. Please allow 2-3 weeks for delivery.

    This item fits the following BMWs:
    2001-2006 E46 BMW M3, M3 Convertible
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    AUTOTECKNIC - Corporate Logo
    T#:39329329
    Part#: BM-0420-G
    Ships in 7 Business Days
    $ 495.00 USD
    Free Shipping on orders $49 and up
    Elevate your BMW's style and performance with the AutoTecknic Dry Carbon Fiber ECU Battery Terminal Cover – the ultimate choice for discerning enthusiasts.