Dorman 917-254 Engine Variable Valve Timing (VVT) Sprocket - Exhaust or Intake

Overview of Dorman Engine Variable Valve Timing Sprocket

The Dorman 917-254 Engine Variable Valve Timing (VVT) Sprocket is designed for reliable performance in select Buick, Chevrolet, GMC, Pontiac, and Saturn vehicles. This steel, silver zinc-plated cam phaser and bolt assembly provides a standard replacement option for maintaining proper engine timing and efficiency.

• Constructed from durable steel with silver zinc plating for corrosion resistance
• Standard replacement grade for dependable engine performance
• Overall dimensions: 4.673 inches in height and length for precise fitment
• Includes cam phaser and bolt for complete installation
• Compatible with multiple GM models including Buick LaCrosse, Chevrolet Malibu, GMC Terrain, Pontiac G6, and Saturn Vue

Detailed Product Description

The Dorman 917-254 VVT sprocket is engineered to meet OEM specifications, ensuring proper valve timing control in engines equipped with variable valve timing systems. Made from high-quality steel with a silver zinc-plated finish, this sprocket resists wear and corrosion, extending the service life of your engine's valve train components. The included cam phaser and bolt simplify installation, providing a comprehensive replacement solution. With an overall height and length of 4.673 inches, this part is designed to fit precisely within the valve train assembly of compatible Buick, Chevrolet, GMC, Pontiac, and Saturn models.

Compatible Vehicles and Applications

This VVT sprocket is compatible with a range of GM vehicles, including but not limited to:

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

Common Issues Addressed by This VVT Sprocket

• Irregular or poor engine timing causing rough idling or reduced performance
• Check engine light triggered by variable valve timing faults
• Engine hesitation or stalling during acceleration
• Unusual noises from the valve train area
• Reduced fuel efficiency due to improper valve timing

Installation Notes and Tips

Installation of the Dorman 917-254 VVT sprocket requires proper alignment and torque specifications to ensure optimal engine timing. It is recommended to follow the vehicle manufacturer’s service manual for detailed procedures. Use the included bolt to secure the cam phaser firmly, and verify timing marks before reassembly. Professional installation is advised if unfamiliar with variable valve timing systems.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 917-254 VVT sprocket undergoes rigorous quality control to ensure fit and function. This part is backed by Dorman’s limited warranty, covering defects in material and workmanship under normal use.