Airtex 3T1038 Engine Variable Valve Timing (VVT) Sprocket Intake Cam Phaser

The Airtex 3T1038 is a direct-fit replacement Engine Variable Valve Timing (VVT) Sprocket, also commonly referred to as a cam phaser or VVT actuator. Designed for the intake camshaft position, this precision-machined sprocket restores proper valve timing function to engines where the original unit has worn or failed.

How It Works:

A VVT sprocket is a toothed wheel mounted on the camshaft that works in conjunction with the engine's oil pressure and PCM to advance or retard camshaft timing. These continuous adjustments optimize when the intake and exhaust valves open and close, directly improving engine performance across the RPM range, reducing harmful emissions, and maximizing fuel efficiency.

Key Features:

• Direct OE-replacement fit — precision-machined to match original equipment specifications for a seamless, no-modification installation
• Intake camshaft position — designed specifically for the intake side VVT circuit
• Tight dimensional tolerances — improves internal sealing, minimizes oil drain-back, and reduces frequency of PCM correction
• Restores engine horsepower and torque — properly timed valves recover lost power caused by a worn or failing cam phaser
• Reduces emissions and improves fuel economy — accurate valve timing keeps combustion efficient across all driving conditions
• Quiet operation — OE-matching tooth profiles eliminate timing chain rattle associated with worn sprockets

Cross-Reference Part Numbers:

• Sorensen: 35-1353
• Dorman: 916-540
• Gates: VCP839
• BWD: VV5060
• NAPA Solutions: 61005301
• Echlin: ECP1757
• OEM Ford: AT4Z6256A / AT4Z6256B

Replacing a worn VVT sprocket promptly prevents cascading damage to the timing chain, tensioners, and guides. The Airtex 3T1038 delivers a reliable, cost-effective solution to restore smooth idle, full power, and clean engine operation.