GSC P-D Honda B16A/B17A/B18C VTEC Manganese Bronze Exhaust Valve Guide +.001in OD - Single

This GSC Power Division exhaust valve guide is made from manganese bronze, a material known for its good wear resistance and self-lubricating properties, which is important for the high-heat environment of an exhaust port. It's designed as a single replacement guide, measuring +.001 inch in outer diameter, intended for Honda B16A, B17A, and B18C VTEC engines. When you're rebuilding the top end of one of these popular Honda engines, ensuring your valve guides are in good shape is crucial for proper valve sealing and engine performance.

Using a manganese bronze guide helps manage heat and friction better than some other materials, contributing to longer valve train life. This particular guide is slightly oversized in its outer diameter by one thousandth of an inch, which is common when replacing worn guides to ensure a tight, proper fit within the cylinder head. It’s a well-built component that addresses a critical wear point in the engine’s cylinder head.