Dorman 917-263 Engine Variable Valve Timing (VVT) Sprocket

Overview of Dorman Engine Variable Valve Timing Sprocket 917-263

The Dorman 917-263 Engine Variable Valve Timing (VVT) Sprocket is designed for reliable performance in select Buick, Chevrolet, GMC, Isuzu, and Saab vehicles. This silver zinc-plated steel sprocket offers a standard replacement option engineered to meet OEM specifications.

• Constructed from durable steel with silver zinc plating for corrosion resistance
• Standard replacement grade ensuring consistent engine timing performance
• Overall height of 5.9 inches and length of 2.6 inches for precise fitment
• Includes M10 x 1.5 cam shaft bolt for secure installation
• Compatible with Buick, Chevrolet, GMC, Isuzu, and Saab models including Trailblazer, Envoy, and 9-7x

Detailed Product Description

The Dorman 917-263 VVT sprocket is manufactured from high-quality steel with a silver zinc-plated finish to resist wear and corrosion over time. This component is a standard replacement part designed to maintain proper variable valve timing function, which is critical for engine efficiency and performance. Measuring 5.9 inches in overall height and 2.6 inches in length, the sprocket is engineered to fit specific engine configurations found in Buick, Chevrolet, GMC, Isuzu, and Saab vehicles. The package includes an M10 x 1.5 cam shaft bolt to ensure a secure and precise installation.

Compatible Vehicles and Applications

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

• Buick 9-7x
• Chevrolet Trailblazer, Trailblazer EXT
• GMC Envoy, Envoy XL, Envoy XUV, Rainier
• Isuzu Ascender
• Saab 9-7x

Common Issues Addressed by the VVT Sprocket

• Irregular or poor engine timing affecting performance
• Variable valve timing system failure or malfunction
• Engine noise related to worn or damaged sprocket teeth
• Reduced fuel efficiency due to timing inconsistencies
• Check engine light triggered by VVT system errors

Installation Notes and Tips

• Ensure engine is cool before beginning installation
• Use the included M10 x 1.5 cam shaft bolt to secure the sprocket
• Follow manufacturer torque specifications to avoid damage
• Inspect timing chain and related components during replacement
• Verify proper alignment of the sprocket to maintain engine timing accuracy

Quality Assurance and Warranty

Dorman parts are engineered to meet or exceed OEM standards for fit, form, and function. The 917-263 VVT sprocket undergoes rigorous quality control to ensure durability and reliable operation. This part is backed by Dorman's standard warranty coverage, providing confidence in its performance and longevity.