Quick view Add to Cart Sierra 18-7703 Knock Sensor $56.99 Sierra 18-7703 Knock Sensor Sierra replacement knock sensor for Mercruiser, Volvo Penta, and OMC Stern Drives. Fits: MCM/MIE GM V-8 (454, 502, 540 & 572 CID) Engines Interchangeable... Add to Cart
Quick view Add to Cart Sierra 18-7554 Knock Sensor $56.49 Sierra 18-7554 Knock Sensor Sierra replacement knock sensor for Mercury, Mercury Sport Jet, and Mercruiser engines. Fits: MCM V-6 & V-8 (305, 350 & 496 CID) MPI Engines With ECM 555 Interchangeable with: Mercruiser Stern... Add to Cart
