Restore the performance of your Cummins 4BT3.9 engine with this complete overhaul rebuild kit. Built for durability and precision, this kit is a perfect fit for CASE 860 Trencher models, ensuring smooth operation and reliable engine performance.

Application

• Fits Cummins 4BT3.9 Engine

• Compatible with CASE 860 Trencher

Kit Contents

• 1 Set of Overhaul Gasket Kit

• 4 Cylinder Liners (Semi-finished, require machining)

• 4 Pistons STD

• 4 Piston Pins

• 8 Snap Rings

• 4 Rod Bushings

• 1 Set of Piston Rings

• 1 Set of Main Bearings

• 1 Set of Rod Bearings

• 1 Set of Thrust Bearings

• 4 Intake Valves

• 4 Exhaust Valves

• 8 Valve Guides

• 4 Intake Valve Seats

• 4 Exhaust Valve Seats

Key Features

• ✅ Designed for Cummins 4BT3.9 engines

• ✅ Fits CASE 860 Trencher

• ✅ Includes gaskets, pistons, liners, bearings & valves

• ✅ Semi-finished cylinder liners (require machining)

• ✅ Reliable aftermarket replacement for engine rebuilding