This Mahle OE chrome top-ring set is for a 3.4252 in bore and uses chrome steel top rings with a 1.2 mm section and standard gap, packaged as a 48-count bulk pack. Intended as direct-fit top rings for rebuilds, the set supports shops needing multiple identical top rings for engines that specify chrome-faced sealing surfaces and the given bore diameter.
Mahle Rings 3.4252in X 1.2MM Chrome Steel Std Gap Top Ring Chrome Ring Set (48 Qty Bulk Pack)