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BMW Electrical Sensors, Switches, & Relays

Electrical gremlins can be very frustrating. Luckily your BMW's electrical system is better than most, even if it's 25 years old. Here you will find electrical relays, sensors, switches, and modules for the engine, camshaft, and crankshaft. Our parts are OEM, Genuine BMW, or approved aftermarket brands that we have an excellent track record with. There is no middle ground with electrical parts - it either works perfectly or not. And there's nothing more frustrating than a new part that fails right out of the box. So it's important to choose quality replacement parts over a cheap but faulty piece.

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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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Genuine BMW Camshaft Position Sensor Connector Repair Kit

T#:58052445

Part#: 12527507526KT2

Ships in 3 Business Days

$ 25.18 USD

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$ 25.18 USD

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Terminal Repair Kit

T#:55281756

Part#: 61138TRKT

Ships in 1-2 days

$ 42.36 USD

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$ 42.36 USD

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This terminal repair kit is the ideal companion for refreshing damaged wiring pins and keeping your chassis' electrical system functioning flawlessly.

Genuine BMW Battery Management Electronics Control Module - BMW G09 G...

T#:55785659

Part#: 61278882634

Ships in 1-2 days

3% off MSRP $ 1,572.99

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

$ 1,532.99 USD

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3% off MSRP

$ 1,572.99

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

$ 1,532.99 USD

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When this critical high-voltage module succumbs to internal hardware failure or water intrusion, your PHEV BMW will instantly lock out its charging capabilities and disable all electric driving modes to protect the vehicle's complex electrical grid. Don't let a failed module keep your hybrid system sidelined. This Genuine BMW replacement unit is the exact factory-spec computer required to replace your corrupted original, fully restoring accurate electric range reporting, optimal cell balancing, and crucial factory safety parameters to your high-voltage accumulator pack.

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Wire Pinning Kit - MLK 1.2 Female Jack

T#:55281746

Part#: 125275WRKT

Ships in 8 Business Days

$ 37.40 USD

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$ 37.40 USD

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This Genuine BMW wiring repair kit is the ideal solution to refresh worn-out terminal connections in your Ultimate Driving Machine.

RP BASE CONTROL UNIT DME

T#:56869523

Part#: 12145B94D28

Ships in 7 Business Days

3% off MSRP $ 3,430.99

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

$ 3,321.99 USD

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3% off MSRP

$ 3,430.99

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

$ 3,321.99 USD

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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.

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

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 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 - 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 - Remanufactured

T#:57267807

Part#: 12418621839

Special Order: No Guaranteed ETA

$ 342.99 USD

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$ 342.99 USD

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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.

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 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.

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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