Dorman 918-190 Engine Variable Valve Timing (VVT) Sprocket

Overview of Dorman 918-190 Engine Variable Valve Timing Sprocket

The Dorman 918-190 Engine Variable Valve Timing (VVT) Sprocket is designed as a standard replacement component for select Buick, Chevrolet, Pontiac, and Saturn vehicles. Engineered from durable metal with a silver finish, this cam phaser helps maintain precise valve timing for optimal engine performance.

• Constructed from high-quality metal for durability
• Silver color for corrosion resistance and visual inspection
• Bolt attachment type (bolt not included)
• Diameter of 4.75 inches and overall height of 2.87 inches
• Standard replacement grade for reliable function
• Includes one cam phaser in the package

Detailed Product Description

The Dorman 918-190 VVT sprocket is a critical component in the variable valve timing system, responsible for adjusting camshaft timing to improve engine efficiency and emissions. With a diameter of 4.75 inches and an overall height of 2.87 inches, this metal sprocket is designed to meet OEM specifications for a precise fit. The bolt attachment type ensures secure installation, although bolts are not included. Its silver finish provides resistance to wear and corrosion, extending the service life of the part.

This part is compatible with a range of vehicles including Buick Lucerne, Chevrolet Impala, Malibu, Monte Carlo, Pontiac G6, Saturn Aura, Relay, Vue, Montana, Terraza, and Uplander models. The Dorman 918-190 is engineered to restore proper valve timing function in these vehicles, helping maintain engine performance and fuel efficiency.

Common Applications and Issues Addressed

• Restores proper camshaft timing in VVT systems
• Replaces worn or damaged cam phasers causing engine performance issues
• Helps resolve rough idling or engine hesitation related to valve timing
• Addresses check engine light codes related to VVT sprocket malfunction
• Improves fuel economy by ensuring accurate valve timing adjustments

Installation Notes and Tips

• Ensure compatibility with your specific Buick, Chevrolet, Pontiac, or Saturn model before installation
• Use appropriate tools to remove and install the sprocket securely using bolts (not included)
• Follow manufacturer torque specifications for bolt tightening
• Inspect related components such as timing chains and tensioners during installation
• Professional installation is recommended for accurate timing system calibration

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 918-190 VVT sprocket is a standard replacement grade component designed for reliable operation. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Refer to Dorman’s official warranty policy for complete information.