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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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Blue Thermostat Caps (pair)

T#:54139632

Part#: BMS-TCP-BLU

Ships in 1 Business Day

$ 29.00 USD

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$ 29.00 USD

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Red B58 BMW Coil Upgrade Adapter Kit - N55

T#:57086690

Part#: BMSN55CUAK-R

Ships on Oct 29, 2026

$ 199.00 USD

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$ 199.00 USD

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Upgrade your N55 ignition system with the N55 → B58 Coil Upgrade Adapter Kit, engineered for a seamless, plug-and-play conversion. This kit lets you run modern B58-style pencil coils on your N55 without modifying the factory harness or compromising valve cover integrity.

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Knock Sensor

T#:54388475

Part#: 13627636937

In Stock

$ 29.99 USD

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$ 29.99 USD

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Keep your ignition timing razor-sharp and your engine safe from destructive detonation. This replacement Knock Sensor acts as your engine's first line of defense, constantly listening for pre-ignition "pinging" or knocking.

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Active Autowerke Rotrex Traction Fluid - 1 Liter

T#:57616348

Part#: RTF-1L

Ships in 3 Business Days

7% off MSRP $ 140.00

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

$ 130.00 USD

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7% off MSRP

$ 140.00

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

$ 130.00 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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MINI Fuel Pump - Supply Module

T#:54388518

Part#: 16117300477

Ships in 1 Business Day

$ 355.99 USD

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$ 355.99 USD

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On the street or at the track, volume and pressure are everything when it comes to fuel. A degrading fuel pump doesn't just rob your BMW of horsepower—it risks dangerous lean conditions when you're pushing the engine to its limits. When it’s time to replace a soft or failing pump, don't gamble on no-name budget brands. Go back to the source with this high-quality Bosch replacement fuel pump.

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Active Autowerke Supercharger Kit Gen 2 Level 4 - E9X M3 S65 4.0L ...

T#:57616347

Part#: 12-032-C38

Ships in 10 Business Days

$ 23,749.00 USD

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$ 23,749.00 USD

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The Active Autowerke Supercharger System is powered by a Rotrex C38-92R Supercharger Unit mounted with a custom CNCed bracket that uses a dedicated drive belt system, while eight high flow fuel injectors are used to supply the additional required fuel. Active Autowerke's Performance Software, available for 91-93 octane, race gas, and octane levels unique to other countries, is carefully calibrated, and is at the heart of the system to provide an unparalleled driving experience. Keeping within the factory's OBDII parameters, the Active Autowerke Supercharger System ensures consistency for everyday driving. The Level 4 system includes a water/methanol injection system with upgraded pulley and custom software.

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Fuel Filter

T#:57267771

Part#: 13321709535

Special Order: No Guaranteed ETA

$ 83.99 USD

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$ 83.99 USD

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Protect your precision engine performance with a high-grade OEM fuel filter replacement manufactured by Bosch.

Starter Solenoid

T#:57231530

Part#: 12411427080

Special Order: No Guaranteed ETA

$ 78.99 USD

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$ 78.99 USD

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When you are at the track or gearing up for a weekend backroad drive, the last thing you need is a sluggish starter holding your BMW back.

Remanufactured Alternator

T#:57267768

Part#: 12317616126

Special Order: No Guaranteed ETA

$ 571.99 USD

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$ 571.99 USD

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Keep your BMW's vital electronics powered and your engine running at peak efficiency with a premium remanufactured alternator from Bosch.

Starter

T#:57267806

Part#: 12418625995

Special Order: No Guaranteed ETA

$ 463.99 USD

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$ 463.99 USD

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Bosch starter units deliver the high-torque cranking performance required to reliably start modern high-compression BMW engines under all thermal conditions.

Starter - Remanufactured

T#:57267807

Part#: 12418621839

Special Order: No Guaranteed ETA

$ 342.99 USD

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$ 342.99 USD

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Remanufactured Alternator - 12V - 170A

T#:57267766

Part#: 12317605478

Special Order: No Guaranteed ETA

$ 499.99 USD

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$ 499.99 USD

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Maintain peak battery performance and protect your vehicle's complex electrical architecture with a motorsport-tested, factory-grade charging replacement.

Starter

T#:57304035

Part#: SR3295N

Special Order: No Guaranteed ETA

$ 441.99 USD

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$ 441.99 USD

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This new starter delivers crisp power and rapid engine speed recovery, avoiding the typical voltage drop issues associated with worn original units.

High Pressure Fuel Pump

T#:57725174

Part#: 13537804411

Special Order: No Guaranteed ETA

$ 209.99 USD

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$ 209.99 USD

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This Bosch High-Pressure Fuel Pump restores your high-pressure direct injection system to factory-fresh performance.

Remanufactured Alternator - 12V - 150 A

T#:57267763

Part#: AL0757X

Special Order: No Guaranteed ETA

$ 430.99 USD

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$ 430.99 USD

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This high-output Bosch remanufactured alternator ensures your ignition system and performance electronics receive clean, steady amperage under high-demand driving conditions.

Oil Filter

T#:57231534

Part#: 7B0115561

Special Order: No Guaranteed ETA

$ 9.99 USD

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$ 9.99 USD

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Protect your engine on the road and at the track with maximum-efficiency oil filtration engineered for demanding performance applications.

AL41X Remanufactured Alternator

T#:57231540

Part#: 12311466084

Special Order: No Guaranteed ETA

$ 286.99 USD

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$ 286.99 USD

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Ensure your BMW or European vehicle maintains uninterrupted power under demanding driving conditions with this premium remanufactured alternator by Bosch.

Starter - Remanufactured

T#:57304037

Part#: 12417843530

Special Order: No Guaranteed ETA

$ 412.99 USD

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$ 412.99 USD

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Ensure your high-performance engine cranks reliably every time with an OE-quality starter motor from Bosch.

Remanufactured Alternator

T#:57267767

Part#: 12317561004

Special Order: No Guaranteed ETA

$ 695.99 USD

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$ 695.99 USD

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This Bosch remanufactured alternator delivers the rock-solid current required to keep your ignition, fuel management, and chassis electronics operating at peak efficiency under demanding conditions.

Remanufactured Starter

T#:57376671

Part#: SR71XKT

Back Ordered

$ 342.99

This product was last offered at the strikethrough price on
08-23-2026

$ 212.99 USD

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$ 212.99 USD

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The Bosch SR71X Remanufactured Starter delivers the precise, high torque cranking performance needed to keep your vehicle starting cleanly on the street or at the track

BMW Alternator 150 Amp - Bosch AL0839X

T#:57376634

Part#: AL0839XKT

Back Ordered

$ 476.86

This product was last offered at the strikethrough price on
08-23-2026

$ 422.86 USD

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$ 422.86 USD

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Protect your BMW's electrical performance on the road and track with the Bosch AL0839X remanufactured alternator. Designed to handle high demand electrical loads under spirited driving conditions

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