Maxiforce Overhaul Engine Kit, Standard Pistons, .010" Main Bearings, .030" Rod Bearings, 30° Valve Seats, 1004.40T 30 Valve Fractured Split for Perkins OK497 21878121 6020 (to s/n 443675)

6020 (to s/n 443675)

1570 - Replaces OEM Numbers A135683

International Harvester Tractor: O6

Direct replacement for OEM BK471-20/10

Direct replacement for Caterpillar 239-0722

Maxiforce Overhaul Engine Kit, Standard Pistons, .010" Main Bearings, .030" Rod Bearings, 30° Valve Seats, 1004.40T 30 Valve Fractured Split for Perkins OK497 21878121 6020 (to s/n 443675)Aftermarket Engine Overhaul Kit. Direct replacement for OEM OK497, OK430 10 30. Please verify fitment against your equipment's serial and engine casting numbers before ordering. Cross references are provided as a guide; the customer is responsible for confirming compatibility.