ARCO Marine Premium Replacement Throttle Position Sensor f/Mercruiser Inboard Engines 1997-Present

The ARCO Marine Premium Replacement Throttle Position Sensor for Mercruiser Inboard Engines 1997-Present is an essential fuel-injection component for any serious boater maintaining a GM 5.7L or 6.2L MPI Mercruiser installation. This sensor monitors engine throttle position and relays critical data to the engine control module, enabling precise fuel delivery and smooth throttle response at all RPM ranges. Whether you're running offshore, cruising inland waters, or putting your inboard through commercial use, a worn or failing throttle position sensor will compromise fuel economy, idle quality, and overall engine performance.

ARCO Marine's OEM-equivalent sensor delivers direct replacement functionality for the Mercruiser part number 803148, engineered to match original factory tolerances and electrical specifications. The compact design—measuring just 3 x 2 x 3 inches and weighing only 0.05 lbs—integrates seamlessly into your existing throttle body assembly without modification. This sensor uses proven potentiometric technology to translate throttle blade angle into a voltage signal that the engine's computer interprets for optimal fuel injection timing and quantity, maintaining consistent power delivery and responsiveness across your entire RPM envelope.

Mercruiser inboard boaters relying on 1997 and newer GM-based MPI engines should consider this replacement sensor when experiencing rough idle, hesitation during acceleration, or diagnostic trouble codes related to throttle position. Installation is straightforward for experienced mechanics or qualified marine technicians, requiring only basic tools and careful connector handling. ARCO Marine's reputation for quality marine electrical components makes this a trusted choice for boaters who demand reliable performance on the water without the premium pricing of factory OEM parts.