Supertech Honda B18C1/B16A 5.5mm Stem 12.09mm OD Intake Valve Guide - Single (Drop Ship Only)

These Supertech intake valve guides are made with a specific OD of 12.09mm and are designed for a 5.5mm valve stem, ensuring a snug fit in your Honda B18C1 or B16A engine. Proper valve guide function is crucial for maintaining the seal between the valve and the cylinder head, which directly impacts compression and overall engine performance. Worn guides can lead to poor sealing, oil consumption, and even valve float at higher RPMs.

Supertech uses a well-built material for these guides, chosen for its durability and ability to withstand the heat and friction found in the combustion chamber. This particular guide is designed as a direct replacement for the stock component, making installation straightforward for someone rebuilding or refreshing their engine's top end. It's important to ensure the guide is properly seated and honed to the correct clearance for optimal valve movement and sealing.