BMW Knock Sensor - Bosch 0261231074
  • Open uri20150720 17800 17wt6fj

Also known as a ping sensor, detects pre-detonation in the combustion chamber, 4 per car

The silent killer of all engines is pre-detonation most commonly referred to as engine knock. Engine knock occurs when the air/fuel mixture ignites before the cylinder reached top dead center. This premature ignition can cause pitting on the piston as well as damage to the rod bearings. Engine knock can easily kill an otherwise good engine.

Knock sensors detect this running condition and send signals to the DME in order to adjust fueling and ignition timing. Without knock sensors, engines can't safely run aggressive ignition timing. A failed knock sensor will usually cause your engine to run in limp mode.

Fits These Cars:

1993 BMW 740i Ignition Knock (Detonation) Sensor

Up to 5/1993
1993 BMW 740iL Ignition Knock (Detonation) Sensor

Up to 5/1993
Product match fitment

BMW Knock Sensor - Bosch 0261231074

Bosch logoBosch
SKU #:
Ignition Knock (Detonation) Sensor
OE Numbers:
$64.99 MSRP: $78.99
Make sure this part fits.
Select your vehicle
  • Guaranteed to Fit, Guaranteed for Life We guarantee the fit and quality of our parts for life. If it doesn’t meet your expectations send it back for a replacement or refund. Learn more
  • Fitment Verified This product application guide has been tested to ensure it will accurately fit the cars outlined in our fitment guide.
  • Shop With Confidence We respect your privacy; we always keep your information confidential.
  • What If I Need to Return This Item? Not a problem! If you are not happy with your purchase, we will gladly help you exchange or return your items, provided you follow the guidelines outlined in our Returns Policy.
Give Us a Call
(877) 634-0063
Whether you have technical questions for our ASE certified staff or you need help fulfilling an order, we're here to help you.
Email Us Live Chat

Customer Reviews

Write a Review No reviews yet. Would you like to be the first one?
Keep me posted
Sign up for Special Offers, News, & Promos from FCP.