Standard Ignition VVT639 Engine Variable Valve Timing (VVT) Sprocket - Intake

Overview of Standard Ignition VVT639 Engine Variable Valve Timing Sprocket

The Standard Ignition VVT639 is a precision-engineered engine variable valve timing (VVT) sprocket designed for select Acura and Honda vehicles. This crankshaft gear component ensures accurate timing control for optimal engine performance in models such as the Civic, CR-V, and RSX.

• Engine variable valve timing sprocket for precise timing control
• Durable metal gear construction for long-lasting performance
• Crankshaft gear type with 46 teeth and 3 timing marks
• Inside diameter of 1.13 inches (28.7 mm) with keyway notch for secure fitment
• Single mounting hole with 0.48 inch (12.2 mm) lug hole diameter
• Thickness of 0.3 inches (7.62 mm) and tooth width matching thickness for consistent engagement

Detailed Product Description

The Standard Ignition VVT639 sprocket is manufactured from high-quality metal to withstand the demands of engine variable valve timing systems. Featuring a crankshaft gear type with 46 teeth and three timing marks, this sprocket provides precise control over valve timing adjustments. The inside diameter measures 1.13 inches (28.7 mm) and includes a keyway notch to ensure proper alignment and secure installation on the crankshaft. With a single mounting hole and a lug hole diameter of 0.48 inches (12.2 mm), the sprocket is designed for reliable attachment without the need for additional hardware. Its thickness and tooth width are both 0.3 inches (7.62 mm), providing consistent engagement with the timing chain or belt system.

Compatible Vehicles and Applications

This VVT sprocket is compatible with various Acura and Honda models, specifically designed to fit the Civic, CR-V, and RSX. It is intended for use in engine variable valve timing systems to maintain accurate valve operation and improve engine efficiency.

• Restores proper variable valve timing function in Acura Civic and CR-V engines
• Replaces worn or damaged crankshaft sprockets in Honda RSX models
• Helps resolve timing chain noise or irregular valve timing issues
• Supports engine performance by maintaining correct valve timing synchronization

Installation Notes and Tips

When installing the Standard Ignition VVT639 sprocket, ensure the keyway notch aligns correctly with the crankshaft key for proper fitment. Verify that the single mounting hole is securely fastened according to manufacturer torque specifications. Since installation hardware is not included, use existing or OEM hardware to complete the installation. Proper alignment of the timing marks is critical to maintain engine timing accuracy.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The VVT639 sprocket undergoes rigorous quality control to maintain precise dimensions and material integrity. Please refer to Standard Ignition's warranty policy for coverage details on this engine variable valve timing sprocket.