Supertech 6.6mm Stem Manganese Bronze Valve Guide - Set of 8

This set includes eight Supertech valve guides, each designed with a 6.6mm stem diameter. These guides are made from manganese bronze, a material known for its good wear resistance and self-lubricating properties, making them a popular choice for engine rebuilds where durability and proper valve operation are key.

Manganese bronze is a well-regarded material for valve guides because it offers a good balance of hardness and lubricity. This helps to reduce friction between the valve stem and the guide, which can improve valve seating and overall engine performance. The 6.6mm stem size is a specific fitment for certain engine applications, so it's important to confirm this matches your needs.

When you're rebuilding an engine, getting the valve train components right is crucial for longevity and performance. These Supertech guides are a well-built option to ensure your valves move freely and seal properly.