Supertech Nissan SR20DET/RB26 6mm Stem Manganese Bronze .001in OS Intake Valve Guide - Set of 8

If you're rebuilding the top end of your Nissan SR20DET or RB26 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 heat, which is important for keeping your valves moving smoothly under pressure. This set includes eight guides, all machined to a .001 inch oversize specification, meaning they're designed to be honed to a precise fit on your specific valve stems during installation.

The 6mm stem diameter is standard for these popular Nissan performance engines. Manganese bronze also offers good lubricity, helping to reduce friction between the valve stem and the guide, which can extend the life of both components. When installing, remember these guides will need to be pressed in and then honed to the correct clearance for your valve stems to ensure proper sealing and operation.