The Supertech manganese bronze exhaust valve guide set for Subaru EJ20/EJ25 applications is supplied as a set of eight and specifies a 6mm stem with an outer diameter of 11.08mm. Intended as exhaust-side replacement guides, they support valve stem seating and alignment during operation. Material, stem size and EJ20/EJ25 fitment are included in the product details.
Supertech Subaru EJ20/EJ25 Manganese Bronze Exhaust Valve Guide 6mm Stem OD 11.08mm - Set of 8