Engineered Marine Products 1300-03772 Knock Sensor for MerCruiser 4.3L TBI Engines

The Engineered Marine Products 1300-03772 is a replacement knock sensor designed for MerCruiser 4.3L Throttle Body Injection (TBI) engines. This critical sensor installs in the side of the engine block within the water gallery just above the oil pan, where it continuously monitors for engine detonation.

Key Features:

• Detects pre-ignition, detonation, and spark knock to protect your engine
• Signals the ECM to retard ignition timing when knock is detected
• Direct replacement for Mercury Marine part number 808015T
• Designed specifically for MerCruiser 4.3L TBI applications
• Precision-manufactured to OEM specifications

The knock sensor plays a vital role in your engine management system by detecting abnormal combustion patterns and allowing the computer to make real-time timing adjustments. This helps prevent engine damage while optimizing performance and fuel efficiency.