Melling VCTO-1003 Engine VVT Oil Control Valve Steel Replacement

The Melling VCTO-1003 is a stock replacement Variable Valve Timing (VVT) oil control valve engineered to restore proper engine operation and fuel efficiency. The VVT oil control valve regulates oil flow to the variable valve timing actuator, allowing the engine control module to advance or retard camshaft timing for optimal power and efficiency. When this valve fails or becomes sluggish with age, it can cause rough idle, poor fuel economy, and fault codes — replacing it with a precision-engineered unit like this one brings the system back to factory performance.

Key Features:

• Stock replacement design meets or exceeds original equipment specifications
• Constructed from high-quality steel for consistent, durable wear
• Mechanically activated for direct, responsive oil flow control
• 2.99 in. overall length; 1.30 in. overall width and height; 0.37 in. shaft diameter
• 9/16"-18 UNF fine-thread end fitting
• Precision engineered for optimum fit and function
• Designed for long-life, worry-free performance

Melling variable valve timing oil control valves are built to the most stringent specifications using only the highest quality materials, ensuring reliable, long-lasting performance. This valve fits select 2019–2025 Chevrolet, GMC, and Cadillac models equipped with 4.3L, 5.3L, 6.2L, and 6.6L engines. Note: gasket or seal is not included.