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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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Crankshaft Sensor O-Ring (18 X 1.2 Mm)
Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Victor Reinz - Corporate Logo
T#:13233505
Part#: 12141402705
Ships in 1 Business Day
$ 1.49

This product was last offered at the strikethrough price on
08-26-2026

$ 1.30 USD
Free Shipping on orders $49 and up
$ 1.30 USD
Free Shipping on orders $49 and up
This O-Ring can sometimes leak at the bottom of your engine and need to be replaced. Fits around the head of the lower crankshaft sensor and provides a connection point.
Battery Cable - With Pole
Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Bapmic - Corporate Logo
T#:54388517
Part#: 61129259425
Ships in 1 Business Day
New Item
$ 126.99 USD
Free Shipping on orders $49 and up
On the track or on the street, your BMW’s electrical architecture demands absolute consistency. A degraded positive battery cable introduces unwanted resistance, leading to weak starts, alternator strain, and erratic module behavior. When it’s time to replace a compromised factory cable, you don’t need over-hyped marketing—you need a part that fits precisely and restores factory grid integrity.
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