Mahle OE chrome top-ring set specified for a 3.4252 in bore includes chrome steel top rings with a 1.2 mm section and standard gap. It is intended as a replacement top ring in piston rebuilds where that section and chrome plating are specified. The overview stresses accurate bore and ring section to aid matching rings to pistons during engine overhaul work.
Mahle Rings 3.4252 X 1.2MM Chrome Steel Std Gap Top Ring Chrome Ring Set