The Supertech manganese bronze intake valve guide set for Nissan VR38 applications comes as a set of twelve with a 6mm stem. These intake-side guides replace worn guides and help maintain valve stem alignment and stable clearance in the head. The listing specifies manganese bronze construction and VR38 fitment to aid correct selection for service or rebuild.
Supertech Nissan VR38 Manganese Bronze Intake Valve Guide 6mm Stem - Set of 12