Compatible with 023 025 MS230 MS250 CHAINSAW.

OEM Part Number : 1123 020 1209, 1123 030 0408

This is a 42.5mm kit, includes a new cylinder, piston assembly, piston rings, wrist pin and clips, engine pan, wrist pin bearing, crankshaft, crankshaft bearings and seals.

Short block is ready for assembly, remove pan, apply crankcase sealer, install into engine housing and torque pan bolts.

Package includes: 1X Cylinder Piston(42.5mm), 1X Crankshaft, 1X Engine Pan, 1X Spark Plug, 1X Piston Pin Bearing, 2X Oil Seals, 2X Crank bearings, Don’t include pan bolts