Fuel Injection Parts Mercruiser→Knock Sensor

Part # & Price	Description
BPI9-33503 $54.95	Knock Sensor, Mercruiser 305, 350, 377 Knock Sensor for Mercruiser Small Block V8 It fits MCM/MIE 305, 350 and 377 Replaces OEM: 806612T
SIE18-7553 $121.95	Knock Sensor for Mercruiser 4.3 TBI Engines 808015T; Knock Sensor for Mercruiser 4.3 TBI Throttle Body Injected Engines. This sensor goes in the side of the engine block, in the water galley just above the oil pan and detects pre-ignition. Also called "detonation" or "spark knock", hence the term "Knock Sensor", and tells the computer to retard the ignition timing to prevent piston burning or valves. Replaces: Mercury Marine 808015T
SIE18-7677 $80.95	Sensor Knock for GM 305 5.0, 350 5.7, 377 6.2, 806612T Knock sensor for GM Small Block marine engines like Mercruiser, OMC, Volvo, PCM, Marine Power and Crusader. This goes in the water port in the middle of the block just above the oil pan on GM Small Block engines. This sensor detects pre-ignition or detonation and sends a signal to the ECM to retard the timing to prevent internal engine damage like burning pistons or Valves. Replaces: 806612T MERCURY MARINE 3850357 OMC R020027 PLEASURECRAFT 3850357 VOLVO