The Walker Products Engine Variable Valve Timing (VVT) Sprocket (part number 595-1027) is a direct-fit replacement for 2002-2009 Buick, Chevrolet, GMC, and Isuzu vehicles with 4.2L engines. Walker Products VVT Sprockets are OE Replacement components that restore camshaft timing control for optimized engine performance and efficiency.
Features:
- Durable Internal Mechanism:Â Built with hardened steel and high-quality seals to resist oil pressure, thermal cycling, and wear.
- OE Replacement Precision:Â Matches original specifications for gear tooth profile, phasing response, and oil control integration.
- Optimizes Valve Timing Control:Â Adjusts camshaft position for improved power, fuel economy, and emissions under varying engine loads.
- Exact OE Fit: Installs seamlessly with factory timing components—no modification or adaptation required.
- Restores Engine Performance:Â Helps resolve timing-related issues such as rough idle, loss of power, and fault codes caused by worn or failed sprockets.
Fits: 2002-2009 Buick, Chevrolet, GMC, Isuzu, and Oldsmobile models including Rainier, Trailblazer, Trailblazer EXT, Envoy, Envoy XL, Envoy XUV, Ascender, and Bravada — 4.2L engines.
Confirm the year, make, model, and engine against your vehicle before ordering. Full application data is shown in the fitment lookup on this page.
Interchanges With: General Motors 25178506, General Motors 1DEF9010
WARNING: This product can expose you to chemicals, including lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm.
