Bosch BOSCH 0261231200 Original Equipment Engine Knock Sensor - Compatible with Select BMW 540i, 545i, 550i, 645Ci, 650i, 740i, 740iL, 745i, 745Li, 750i, 750Li, M5, X5, Z8, Alpina B7

Bosch Engine Knock Sensors are highly accurate and sensitive, for superior engine knock detection to prevent potential damaging engine detonation (knocking/pinging) from going undetected and causing severe engine damage. The knock sensor delivers instantaneous information to the vehicle's computer so the engine managment system can make adjustments to eliminate damaging engine knock. Bosch Original Equipment Engine Knock Sensors aren't just a a quality replacement component, they're the same sensor your vehicle was equipped with when manufactured - minus the expense of brand name packaging. Robust design features a linear signal over a large frequency range, improved efficiency and prolonged engine life, and a wide temperature range that withstands extreme hot and cold operating conditions. Bosch Engine Knock Sensors deliver the precision operation and long service life your vehicle needs for superior performance while preserving engine longevity. About this item [PREMIUM PERFORMANCE] - Bosch Knock Sensors are highly accurate and sensitive for superior engine knock detection, ensuring efficient performance and long life for your vehicle [ACTUAL OE] - Bosch Original Equipment Knock Sensors aren't just a a quality replacement component, they're the same sensor your vehicle was equipped with when manufactured - minus the expense of brand name packaging [SUPERIOR ENGINEERING] - Robust design features a linear signal over a large frequency range, improved efficiency and prolonged engine life, and a wide temperature range that withstands extreme hot and cold operating conditions [LONGER LIFE] - Bosch Knock Sensors deliver the precision operation and long service life your vehicle needs for superior performance while preserving engine longevity Replaces OE numbers 12141709317, 13627568421 Compatible with select vehicles (Note: engine affects fitment - verify specific vehicle fitment details with fit checker above): BMW: 1998-03 540i, 2004-05 545i, 2006-10 550i, 2004-05 645Ci, 2006-10 650i, 1998-01 740i, 1998-01 740iL Compatible with (continued): BMW: 2002-05 745i, 2002-05 745Li, 2006-08 750i, 2006-08 750Li, 2007-08 Alpina B7, 2000-03 M5, 2000-10 X5, 2000-03 Z8 See more product details