Quicksilver 806612T Knock Sensor for MerCruiser GM V-8 Engines

The Quicksilver 806612T Knock Sensor is a genuine OEM Mercury/MerCruiser replacement part designed to monitor combustion knock and protect your marine engine from detonation damage. The knock sensor continuously measures engine vibration frequencies and signals the ECM to retard ignition timing when abnormal combustion is detected, preventing costly engine damage.

Key Features:

• Genuine OEM Quicksilver/Mercury part — not aftermarket
• Fits MCM/MIE GM V-8 engines (305, 350, and 377 cid)
• Compatible with MerCruiser EFI and MPI applications including 5.0L and 5.7L configurations
• Direct OEM replacement for precise fit and reliable performance
• UPC: 745061283732

Cross-Reference Part Numbers:

• Mercury/MerCruiser OEM: 806612T
• Mercury Base: 806612
• Sierra Marine: 18-7677
• Crusader: R020027
• Volvo Penta: 22024631
• Evinrude/Johnson OMC BRP: 3850357

Replacing a worn or failed knock sensor restores proper ignition timing control and helps maintain peak engine performance. This part is sold individually.