Dorman 917-270 Engine Variable Valve Timing (VVT) Sprocket - Intake

Overview of Dorman Engine Variable Valve Timing Sprocket

The Dorman 917-270 Engine Variable Valve Timing (VVT) Sprocket is designed to restore proper valve timing function in select GM vehicles. Constructed from durable steel with a silver zinc-plated finish, this standard replacement cam phaser ensures reliable performance for Buick, Chevrolet, GMC, Pontiac, and Saturn models.

• Made from high-strength steel for durability
• Silver zinc-plated finish for corrosion resistance
• Standard replacement grade for dependable operation
• Overall height and length of 4.673 inches for precise fit
• Includes cam phaser and mounting bolt in package

Detailed Product Description

The Dorman 917-270 VVT sprocket is engineered to meet OEM specifications, providing a direct replacement for worn or damaged cam phasers in various GM vehicles. Its steel construction offers the necessary strength to withstand engine timing stresses, while the silver zinc plating helps resist rust and corrosion over time. With an overall height and length of 4.673 inches, this sprocket fits accurately within the valve train assembly, ensuring optimal variable valve timing performance. The package includes both the cam phaser and the required bolt for installation, simplifying the replacement process.

Compatible Vehicles and Applications

This VVT sprocket is compatible with a range of Buick, Chevrolet, GMC, Pontiac, and Saturn models, including but not limited to:

• Buick Allure, LaCrosse, Regal, Verano
• Chevrolet Cobalt, Equinox, HHR, Malibu, Sky, Terrain
• GMC Terrain, Vue
• Pontiac G4, G5, G6, Pursuit, Solstice
• Saturn Aura, Ion

Use this part to address issues related to variable valve timing malfunctions in these vehicles.

Common Issues Addressed by Dorman 917-270

• Erratic engine performance due to faulty cam phaser
• Check engine light triggered by VVT system errors
• Reduced fuel efficiency from improper valve timing
• Engine noise or rattling related to worn sprocket components
• Difficulty passing emissions tests caused by timing irregularities

Installation Notes and Tips

When installing the Dorman 917-270 VVT sprocket, ensure the engine is cool and the battery is disconnected. Follow manufacturer torque specifications for the included bolt to avoid damage. It is recommended to inspect related timing components such as the timing chain and tensioner during replacement. Proper alignment of the sprocket is critical for accurate valve timing and engine performance.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable fit and function. The 917-270 VVT sprocket undergoes rigorous quality control to ensure durability and performance. This part is backed by Dorman's limited warranty, covering defects in material and workmanship under normal use.