Nissan NP200 Petrol(K7MF) valve guide-exhaust std size 7x12x49 BRASS – JEG Auto

Exhaust Valve Guide (Standard Size: 7×12×49 mm, Brass) What it is:A valve guide is a small cylindrical sleeve pressed into the cylinder head that guides the exhaust valve stem up and down. It keeps the valve aligned so it seats properly against the valve seat when the engine runs.