Supertech Toyota 20V Manganese Bronze Intake Valve Guide 5mm Stem - Set of 12

If you're rebuilding the top end of your Toyota 20-valve engine, these intake valve guides from Supertech are a solid choice. They're made from manganese bronze, a material known for its good wear resistance and ability to handle the heat and friction found in the valve train. This set includes 12 guides, enough for a full engine rebuild.

Manganese bronze is a popular material for valve guides because it offers a good balance of hardness and lubricity. This means it can withstand the constant movement of the valve stem without excessive wear, while also providing a smooth surface for the stem to slide against. The 5mm stem diameter ensures a precise fit for the corresponding intake valves.