BMW E21 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.

For accurate results, specify your model below:

HARD Motorsport Battery Disconnect / Kill Switch Sticker
HARD Motorsport
T#: 390227
In Stock
Sale - Save 5% $7.00
Free Shipping
Add to Wish List
Relay - Black 7-prong - Fuel Pump Relay
T#: 19416
Mfg#: 13631276264
Ships in 5 days
Ignition Switch - E21 320i 1977-1978
Genuine BMW
T#: 20092
Mfg#: 61311358932
Ships in 6 days
$128.90 12% off MSRP
Free Shipping
Add to Wish List
Relay switch - E21 E28
Genuine BMW
T#: 24342
Mfg#: 61311377251
Ships on Aug 2, 2018
$37.66 15% off MSRP
Free Shipping on orders $99 and up
Add to Wish List