Ferrea Big & Small Block 5/16 .502 OD 2.240 Length .500 ID Exhaust Valve Guide - Single (D/S Only)

This Ferrea exhaust valve guide is made with a specific 5/16 inch stem diameter and a .502 inch outer diameter, designed to fit precisely within the cylinder head. Its 2.240 inch length and .500 inch inner diameter are critical dimensions for proper valve seating and sealing in big and small block V8 engines. Ferrea is known for well-built engine components, and these guides are no exception, offering a solid option for rebuilding or performance builds where precise valve train geometry is key.

When you're working on the top end of a big or small block engine, the valve guides play a crucial role in how well the valve seals against the seat. These guides are manufactured to tight tolerances, ensuring the valve moves smoothly without excessive wobble, which can lead to poor sealing and reduced performance. The material and dimensions are chosen to handle the heat and stress of exhaust gases, helping to maintain engine integrity over time. This particular guide is for exhaust valves only and is sold individually, so be sure to order the correct quantity for your application.