The Supertech Inconel exhaust valve for the BMW M20B25 is a +1mm oversize single valve supplied for engine rebuilds requiring larger valve sizing. Constructed from Inconel and sold individually, this oversize option fits M20B25 service where seat cutting or wear correction calls for a larger exhaust valve during valve-train maintenance.
Supertech BMW M20B25 Inconel Exhaust Valve- +1mm Oversize - Single