Gates VCP854 Engine Variable Valve Timing (VVT) Sprocket

Gates VCP854 Engine Variable Valve Timing Sprocket

The Gates VCP854 is an OE-performance variable valve timing sprocket for timing-chain driven engines. Built to OE specifications for fit, form, and performance, it is engineered to help restore proper cam timing response, engine efficiency, and emissions control.

Fits 2005 Buick Rainier, N/A; 2005 Chevrolet Trailblazer, N/A; 2005 Chevrolet Trailblazer EXT, N/A; 2005 GMC Envoy, N/A; 2005 GMC Envoy XL, N/A; 2005 GMC Envoy XUV, N/A; 2005 Isuzu Ascender, N/A; and 2005 Saab 9-7x, N/A.

Key Features

• OE-performance VVT sprocket for cam phaser and cam actuator applications
• Designed to match OE specifications in fit, form, and performance
• Steel housing for durability and service life
• Timing chain drive with 58 teeth and .166 in tooth thickness
• Overall diameter: 5.88 in; overall height: 2.58 in
• Mounting hardware included; mounting bolt quantity: 1; mounting hole quantity: 1
• Single-row design

Detailed Description

Gates Engine Variable Valve Timing Sprocket VCP854 is built for vehicles that rely on precise cam timing control through the timing chain system. The steel housing and OE-performance construction support consistent operation in applications where accurate valve timing affects drivability, fuel economy, power delivery, and emissions output. This Gates VCP854 cam phaser-style sprocket is a direct-fit service part for 2005 Buick Rainier, 2005 Chevrolet Trailblazer and Trailblazer EXT, 2005 GMC Envoy, Envoy XL, Envoy XUV, 2005 Isuzu Ascender, and 2005 Saab 9-7x.

Gates’ Engine Variable Valve Timing Sprocket line focuses on OE-style replacement parts for engines that use variable cam timing. If you are replacing a worn or noisy VVT sprocket, the VCP854 provides the dimensional and material characteristics needed for a proper repair. This part cross-references Dorman OE Solutions 917-263 for the same application.

Common Problems This Part Can Address

• Rough idle caused by worn cam timing control components
• Reduced engine response from inconsistent variable valve timing operation
• Check engine light concerns related to cam timing performance
• Loss of fuel economy tied to inaccurate valve timing
• Emissions issues caused by degraded VVT control

Installation Notes and Tips

Verify engine code, timing chain condition, and cam timing alignment before installation. Replace related wear items as needed during service, and follow factory timing procedures to prevent valve timing errors. Confirm the sprocket matches the original tooth count, diameter, and mounting configuration before assembly.

Quality Assurance

Gates manufactures this VVT sprocket to OE-performance standards using durable materials selected for long service life. The design is tested to help restore engine performance, fuel economy, power output, and emissions control in the listed applications.