This Mahle OE chrome top-ring set fits a 3.4252 in bore and features chrome steel top rings with a 1.5 mm section. It acts as a direct replacement top ring for piston rebuilds where a chrome-faced top ring of that section is required. The overview emphasizes correct sizing and ring type to help match the part to pistons and ensure proper sealing in repaired engines.
Mahle Rings 3.4252 X 1.5MM Chrome Steel Top Ring Chrome Ring Set