John Deere 6.404D Early Power Booster Overhaul Rebuild Kit

Product Overview

This John Deere 6.404D Early Power Booster Overhaul Kit is specially engineered for engines up to ESN 214999. It features semi-finished cylinder liners, standard pistons, piston pins, snap rings, rod bushings, and complete gasket and bearing sets. Designed for a perfect fit on John Deere 4010 and 4020 tractors, this kit restores engine performance, efficiency, and reliability.

Engine Specifications

• Engine Type: John Deere 6.404D Early Power Booster

• Engine Data: To ESN 214999

• Bore: 4.25 in / 108 mm

• Pin Diameter: 1.50 in / 38 mm

• Semi-finished Cylinder Liners for precise finishing and fitting

Replaceable Part Numbers

• Block (m): R26070, R33180, R34340, R40890, R40900

• Con Rod (m): R26047, R58880, R66923

Compatible John Deere Engines

• Fits: 6.404D Early Power Booster Engines

Applications

• John Deere Farm Tractor: 4010, 4020

Kit Contents

• 1 Set of Overhaul Gasket Kit

• 1 Set of Cylinder Liners (Semi-finished)

• 1 Set of Pistons STD

• 1 Set of Piston Pins

• 1 Set of Snap Rings

• 1 Set of Rod Bushings

• Set of Rings for 6 Pistons STD

• 1 Set of Main / Con Rod Bearings

• 1 Set of Thrust Bearings