Piston Ring Set - M180 - 81MM - 2.0MM Top Groove

Piston Ring Set - Complete - New U.S. Manufacture - Ring Sets for 6 Pistons. For the M180, M127 6 Cylinder Motors - (1958-1965) 6 Cylinder - 81MM Ring Grooves: 1 - 2.0 mm - SEE NOTE BELOW 2 - 2.50 mm 3 - 3.0 mm 4 - 5.0 mm Important - The Unimog 404 came with 2 styles of piston. The difference is the top ring groove. For the 1.5 mm top groove, see 1863B040