Supertech Nissan SR20DE Manganese Bronze Exhaust Valve Guide 6mm Stem - Set of 12

These Supertech exhaust valve guides are made from manganese bronze, a material known for its excellent wear resistance and ability to handle high temperatures. This set includes 12 guides, each designed for a 6mm valve stem, making them a solid option for rebuilding or upgrading the cylinder head on your Nissan SR20DE engine. Proper valve guide function is critical for sealing and preventing oil from entering the combustion chamber, and these guides help ensure that seal is maintained under demanding conditions.

Manganese bronze is a good choice for exhaust applications because it can withstand the heat generated by exhaust gases better than some other materials. This helps to prevent premature wear and maintain the guide's dimensions over time. Installing these guides requires careful machining and fitting to the cylinder head, ensuring they are properly seated and aligned with the valve stem for optimal performance and longevity. If you're working on the top end of your SR20DE, these guides are a well-built component to consider.