BMW Electrical Sensors, Switches, & Relays for BMW Z4 M Roadster S54 (2003-2008)

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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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Camshaft Position Sensor - E46 M3, Z4M, Z3M S54

T#:36913379

Part#: 12147539171

Ships in 1 Business Day

Sale - Save 20% $ 89.99

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

$ 71.80 USD

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Sale - Save 20%

$ 89.99

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

$ 71.80 USD

Add to Wish List

The camshaft position sensor is essential for assisting the engine DME by monitoring the camshaft's position. The data from this sensor is key to optimizing ignition timing and ensuring smooth engine performance.

Often referred to as the CMP sensor, this component is crucial for the overall functionality of the powertrain. A failing camshaft position sensor can cause a range of issues, including engine stumbling, hesitation during acceleration, power loss, and even starting difficulties or complete failure to start.

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Genuine BMW Ground Cable

T#:39357

Part#: 12421737755

Ships in 2 Business Days

Sale - Save 10% $ 41.99

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

$ 37.89 USD

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Sale - Save 10%

$ 41.99

This product was last offered at the strikethrough price on
03-30-2026

$ 37.89 USD

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Genuine BMW Ground Cable - L=380Mm
This item fits the following BMW Chassis:
E36 M3,E46 M3,E85 Z4M,E30,E34,E36,E38,E39,E46,E85 Z4,E86 Z4

Genuine BMW Socket repair kit

T#:207094

Part#: 61132359996

In Stock

Sale - Save 8% $ 29.99

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

$ 27.74 USD

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Sale - Save 8%

$ 29.99

This product was last offered at the strikethrough price on
06-15-2026

$ 27.74 USD

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Genuine BMW Rep. Kit For Socket Housing - 4 Pol.
This item fits the following BMW Chassis:
E46 M3,E46,E85 Z4,E90,F30,F31,F32,F33,F34,F36,F80 M3,F82 M4,F83