Piston Ring Set 4-Cylinder 3" Bore Fits Massey Harris 20 Colt 21 81 Tractors carburetor Quality Aftermarket: 12-volt (3-Terminal) External

Quality Aftermarket: 12-volt (3-Terminal) External Voltage Regulator (Saddle Mount)-

B (SN 96000 and up)

4-Cylinder: 8N

Exhaust valve is 4

Piston Ring Set 4-Cylinder 3" Bore Fits Massey Harris 20 Colt 21 81 Tractors carburetor Quality Aftermarket: 12-volt (3-Terminal) ExternalQuality Aftermarket Piston Ring Set Fits Massey Harris MH: 20, Colt (21), 81 Some w F124 C. I Continental Engine; 101 Jr. & 102 Jr. Some Early w F124 C. I Continental Engine Tractors Specifications 3"" bore (3) 0. 125"" compression rings (1) 0. 250"" oil ring Measure old rings before purchasing. Do not order by tractor model only. Due to the many different piston manufacturers, there can be as many as 8 different ring sets available for one particular