Sierra 18-7700 Throttle Position Sensor for Marine Engines

The Sierra 18-7700 is a precision throttle position sensor designed for GM-based marine gasoline engines. This sensor monitors throttle valve position and sends critical data to the engine control module to maintain optimal engine performance, fuel efficiency, and power delivery.

Key Features:

• Three-wire electrical connector design for reliable signal transmission
• D-shaped drive shaft with O-ring seal prevents leaks and ensures proper alignment
• Engineered to meet or exceed OEM specifications for direct fit replacement
• Compatible with multi-port fuel injection (MPI) systems
• Precision-calibrated for accurate throttle position readings

OEM Cross-References: Replaces MerCruiser 853678T, Mercury 8M0097035, Volvo Penta 3857487, Crusader R020041, Indmar 55-6103, OMC 802623, CDI E13-0006, Mallory 9-33702, and Pleasurecraft R020041. Compatible with MerCruiser/Mercury Inboard 4.3L MPI, 5.0L MPI, 5.7L MPI (350 Mag MPI), 6.2L MPI (MX6.2), 7.4L MPI, 8.1L MPI, Black Scorpion, and other GM V6/V8 based marine engines with electronic fuel injection.

A failed throttle position sensor can cause poor throttle response, reduced power output, rough idling, decreased fuel economy, and difficulty reaching proper RPM under load. This Sierra replacement sensor restores proper engine management system operation.