Dorman 917-256 Engine Variable Valve Timing (VVT) Sprocket - Intake

Reliable Engine Variable Valve Timing Sprocket for Toyota and Pontiac

The Dorman 917-256 Engine Variable Valve Timing (VVT) Sprocket is designed to restore proper valve timing and improve engine performance in select Toyota and Pontiac models. Crafted from durable steel with a silver zinc-plated finish, this standard replacement cam phaser ensures reliable operation and longevity.

• Constructed from high-strength steel for durability
• Silver zinc-plated finish resists corrosion
• Standard replacement grade for dependable performance
• Overall height of 1.5 inches and length of 3.5 inches for precise fit
• Includes cam phaser and mounting bolt for installation

Durable Construction and Precise Fitment

The Dorman 917-256 VVT sprocket is engineered to meet OEM specifications, providing a precise fit for Toyota Corolla, Matrix, Prius, Vibe, and Scion xD models, as well as select Pontiac vehicles. Its steel construction combined with a corrosion-resistant silver zinc plating helps maintain optimal function under demanding engine conditions. The included cam phaser and bolt simplify replacement, ensuring the valve timing system operates smoothly and efficiently.

Compatible Vehicles and Common Applications

This VVT sprocket is compatible with the following makes and models:

• Toyota Corolla
• Toyota Matrix
• Toyota Prius
• Toyota Vibe
• Scion xD
• Pontiac (specific models requiring this part)

It is commonly used to address issues such as:

• Irregular or noisy valve timing operation
• Check engine light related to camshaft timing
• Reduced engine performance or fuel efficiency
• Engine hesitation or rough idling
• Failed variable valve timing system diagnostics

Installation Notes and Tips

When installing the Dorman 917-256 VVT sprocket, ensure the engine is cool and follow manufacturer torque specifications for the cam phaser bolt. Proper alignment of the sprocket is critical to maintain accurate valve timing. It is recommended to inspect related timing components during replacement to prevent future issues.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 917-256 VVT sprocket is backed by Dorman's quality assurance processes. Please refer to Dorman's warranty policy for specific coverage details.