The MAJOR OVERHAUL KIT from A & I PRODUCTS is designed for comprehensive engine maintenance and repair. This kit includes all necessary components such as gaskets, seals, and bearings, ensuring a complete overhaul of your engine. Made from high-quality materials, each part meets industry standards for durability and performance. Ideal for agricultural machinery, this kit helps restore engine efficiency and prolongs the lifespan of your equipment, making it a valuable investment for any operator.
John Deere Major Engine Overhaul Kit for 6.619A & 6.619T Diesel, 500 Series engines. 6 Cyl. Block #: R74123, R72130; Connecting Rod #: R63959. Standard bore 5.12 (130mm), Piston Pin: 2.0 (50.8mm). Kit includes: Piston Liner Kit, Main Bearing, Thrust Bearing, Thrust Washer Set, Connecting Rod Bearing, Front Crankshaft Seal, Rear Seal, Connecting Rod Bushing, Connecting Rod Bolt, and Camshaft Bearing. Fits John Deere Tractor models: 762, 850, 855, 860B, 862, 890, 890A, 8630, 8640, and 8650.
• 6 CYL BLOCK: R74123, R72130, CONN ROD: R63959; PISTON MARKED: AR85997, RE20275
• Bore: 5.12" 130mm, Pin: 2.0", 50.8mm
| Engine Overhaul Kits > 6.619A & 6.619T Diesel, 500 Series |
| John Deere INDUSTRIAL/CONSTRUCTION: 762 |
| John Deere INDUSTRIAL/CONSTRUCTION: 850 |
| John Deere INDUSTRIAL/CONSTRUCTION: 855 |
| John Deere INDUSTRIAL/CONSTRUCTION: 860B |
| John Deere INDUSTRIAL/CONSTRUCTION: 862 |
| John Deere INDUSTRIAL/CONSTRUCTION: 890 |
| John Deere INDUSTRIAL/CONSTRUCTION: 890A |
| John Deere TRACTOR: 8630 (ENG SN 33815-49059) |
| John Deere TRACTOR: 8640 (ENG SN 33815-49059) |
| John Deere TRACTOR: 8650 (ENG SN 33815-49059) |
next >> | Group Description | Component | Size / Desc | Qty |
| Piston Liner Kit | A-RE20291 | | 6.00 |
| Bearing, Main | A-AR101268 | STD | 6.00 |
| A-AR104122 | .010 | 6.00 |
| A-AR104123 | .020 | 6.00 |
| A-AR104124 | .030 | 6.00 |
| Bearing, Thrust | A-AR101269 | STD | 1.00 |
| A-AR104126 | .010 | 1.00 |
| A-AR104127 | .020 | 1.00 |
| A-AR104128 | .030 | 1.00 |
| Washer Set, Thrust | A-AR89622 | STD | 1.00 |
| A-AR89971 | .007 | 1.00 |
| Bearing, Conn Rod | A-AR101271 | STD | 6.00 |
| A-AR104130 | .010 | 6.00 |
| A-AR104131 | .020 | 6.00 |
| A-AR104132 | .030 | 6.00 |
| Seal, Front Crankshaft | A-AR49025 | | 1.00 |
| Seal, Rear Crankshaft | A-RE13310 | | 1.00 |
| Bushing, Conn Rod | A-R69045 | w/ eng SN <33185 use R60 | 6.00 |
| Bolt, Conn Rod | A-R66453 | | 12.00 |
| Gasket OH Set w/o Seals | A-RE37416 | | 1.00 |
| Item Number | Description | Qty |
| A-AR72351 | O-Ring | 6 |
| A-AR82355 | Rings, Piston | 6 |
| A-IK20291 | IN FRAME OH KIT | 1 |
| A-N51168 | Snap Ring | 12 |
| A-RE20275 | Piston | 6 |
| A-RE34009 | Gasket, Head | 1 |
| A-R35431 | Lock, Valve | 12 |
| A-R49569 | Spring, Valve Inner | 12 |
| A-R49571 | Spring, Valve Outer | 12 |
| A-R53192 | Guide, Intake & Exhaust Valve | 12 |
| A-R63982 | Valve, Exhaust | 6 |
| A-R65629 | Liner, Cylinder | 6 |
| A-R75690 | Valve, Intake | 6 |
| A-R81086 | Rotator, Valve | 12 |
| A-10152 | Assembly Lube; 8 oz | 1 |
| A-10153 | Assembly Lube; Case of 12-8ozbottles | 1 |
