Camshaft Position Sensor

The Chevrolet Performance Camshaft Position Sensor (Part Number 12591720) is a precision engine management component engineered for GM LS-series engines. This OEM-specification sensor monitors camshaft position in real time, enabling the engine control unit to optimize fuel injection timing and spark advance for peak combustion efficiency and emissions compliance. Accuracy in cam position detection is critical—even minor deviations can trigger check engine lights, reduce power output, or increase fuel consumption.

Weighing only 0.06 lbs with compact dimensions of 2.15 x 1.35 x 3.85 inches, this sensor integrates seamlessly into the tight engine bay of LS-based powerplants without requiring bracket modifications or adapter plates. The sensor operates across the full thermal range expected in high-performance and street applications, maintaining reliable signal output under sustained load and temperature cycling. Direct OEM part compatibility ensures plug-and-play installation without ECU reprogramming or tuning adjustments.

This camshaft position sensor serves both stock and modified LS engines—from LS1 and LS2 to LS3, LSX, and LSA variants. Whether you're maintaining a daily-driver truck, restoring a muscle car, or tuning a track platform, accurate cam timing feedback is essential for reliable idle quality, cold-start behavior, and full-throttle responsiveness. Owners performing sensor replacement during engine rebuild or addressing cam timing fault codes will find this Chevrolet Performance unit delivers OEM-level reliability without aftermarket guesswork.