GSC Power Division manganese bronze exhaust valve guide stopper set for Nissan VR38DETT lists guides for a 6.6mm stem in a set of twelve using a stopper-style design. These guides provide replacement hardware for VR38DETT heads where bronze materials and the specified stem size are required, supporting comprehensive valve train rebuilding on the platform.
GSC P-D Nissan VR38DETT 6.6mm Stem Manganese Bronze Exhaust Valve Guide Stopper Style - Set of 12