Distributor Cap (Original), Bosch - E30 M3 S14

This part is listed by BMW as BMW part number 12111309797 (12 11 1 309 797), and is described as the Distributor Cap for E30 M3 and the S14 engine. This is the early-style cap with a spring-loaded center contact pin. Use with the matching ignition rotor (BMW part #12111309798).

Ideally you would replace cap and rotor together and buy two compatible parts. However, sometimes it's necessary to replace one without the other. NOTE: The E30 M3 had two styles of distributor cap & rotor combinations. The early style has a spring-loaded center contact pin and the rotor is a flat contact pad on top. The updated style uses a solid contact pin with a recessed "pad" / hole on the top of the rotor. We also sell the updated style that is better for dedicated track cars that see constant high-RPM use. These parts must be used in correct pairs, please check your existing part numbers if you are not ordering both parts.

The updated style uses Bosch part number 1235522422 (printed on the black plastic cover).
The older style uses Bosch part number 1235522406 (printed on the black plastic cover) or 03241.

This is an OEM E30 cap manufactured by Bosch - an original supplier to BMW for this part, as well as many other ignition components. As the OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM parts are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag. This part has a two year warranty.

BMW Fitments:

3 Series
E30 (84-91) > M3