Brian Crower Valve Guides - 6.6mm Mitsubishi 4G63/Evo Intake (Quantity of 8)

If you're rebuilding the top end of your 1990-1999 Mitsubishi Eclipse, especially with the 4G63 engine, new valve guides are a critical part of the process. These guides ensure your intake valves move smoothly and seal properly within the cylinder head. Worn guides can lead to poor valve sealing, oil consumption, and reduced engine performance, so replacing them is key to restoring your engine's health.

Brian Crower is known for making well-built engine components, and these valve guides are no exception. They are designed to the correct 6.6mm intake size, ensuring a precise fit for your specific application. Installing new guides is a job that requires careful machining of the cylinder head, but once properly installed, they will help your engine run smoothly and efficiently for miles to come.