The OK20644 Major Overhaul Kit includes all essential components for a comprehensive engine rebuild. This kit features high-quality gaskets, seals, and bearings, ensuring a perfect fit and reliable performance. Designed for specific engine models, it meets or exceeds OEM standards for quality and durability. Ideal for mechanics and DIY enthusiasts, this overhaul kit simplifies the rebuilding process, providing everything needed for a successful engine restoration.The Major Overhaul Kit (model OK20644) from A & I PRODUCTS contains a comprehensive assortment of replacement parts for major equipment repairs. It includes OEM-grade seals, bearings, gaskets, and other wear components designed to restore machinery to operational standards. All parts are manufactured to precise dimensions and material specifications for compatibility with original equipment. This kit supports agricultural and industrial maintenance by providing a one-stop solution for extensive rebuilds, reducing downtime and ensuring equipment longevity.
• Cummins Control Parts List#'s (CPL): (591 Marine Engine), 681, (721 Marine Engine), 725, 791, 843, 895, 981, 1172, 1259, 1312, 1522 & 1932.
• Serial & CPL#'s Are Found On A Tag Located On The Side Of The Timing Gear Housing And/Or Valve Cover. If Tag Is Missing, Check The Top Of The Oil Cooler Housing To See If It Is Stamped There.
• Serial Number Consist Of 8 Digits. CPL#'s Are 3 Or 4 Digits.
Kit Contains: Cylinder Kits, Main & Con Rod Bearings, Front & Rear Crankshaft Seals, Top & Bottom Gasket Sets And Piston & Cam Bushing.
Piston Marked: 6208
Non-Emission
239 Cubic Inch
591*, 681, 721*, 725, 791, 843, 895, 981, 1172, 1259, 1312, 1522, 1932 (* Marine Eng)
next >> | Engine Overhaul Kits > 4-390 Naturally Aspirated Cummins "B" Series |
| Case-IH CRAWLER: 450C |
| Case-IH CRAWLER: 455C |
| Case-IH INDUSTRIAL/CONSTRUCTION: 480E |
| Case-IH INDUSTRIAL/CONSTRUCTION: 480ELL |
| Case-IH INDUSTRIAL/CONSTRUCTION: 480F |
| Case-IH INDUSTRIAL/CONSTRUCTION: 480FLL |
| Case-IH INDUSTRIAL/CONSTRUCTION: 550 |
| Case-IH INDUSTRIAL/CONSTRUCTION: 550E |
| Case-IH INDUSTRIAL/CONSTRUCTION: 580K |
| Case-IH INDUSTRIAL/CONSTRUCTION: 580SE |
| Case-IH INDUSTRIAL/CONSTRUCTION: 580SK |
| Case-IH INDUSTRIAL/CONSTRUCTION: 584E |
| Case-IH INDUSTRIAL/CONSTRUCTION: 585E |
| Case-IH INDUSTRIAL/CONSTRUCTION: 586E |
| Case-IH INDUSTRIAL/CONSTRUCTION: 660 |
| Case-IH INDUSTRIAL/CONSTRUCTION: 760 |
| Case-IH SKID STEER LOADER: 1840 |
| Case-IH SKID STEER LOADER: 1845C |
| Case-IH SWATHER/WINDROWER: 6000 |
| Case-IH SWATHER/WINDROWER: 6500 |
| Group Description | Component | Size / Desc | Qty |
| KIT, PISTON; 1.00MM | A-3802064 | 1.00 MM | 4.00 |
| BEARING SET, MAIN; STD. | A-3802010 | Std | 1.00 |
| BEARING SET, MAIN; 0.25MM | A-3802011 | 0.25 MM | 1.00 |
| BEARING SET, MAIN; 0.50MM | A-3802012 | 0.50 MM | 1.00 |
| BEARING SET, MAIN; 0.75MM | A-3802013 | 0.75 MM | 1.00 |
| BEARING, CON. ROD; STD. | A-3901170 | Std | 8.00 |
| BEARING, CON. ROD; 0.25MM | A-3901171 | 0.25 MM | 8.00 |
| BEARING, CON. ROD; 0.50MM | A-3901172 | 0.50 MM | 8.00 |
| BEARING, CON. ROD; 0.75MM | A-3901173 | 0.75 MM | 8.00 |
| BUSHING; CAM | A-3901306 | For Storm blocks use 394 | 1.00 |
| A-3940059 | | 1.00 |
| BUSHING; PISTON | A-4891178 | | 4.00 |
| GASKET SET; UPPER | A-3804896 | | 1.00 |
| GASKET SET; LOWER W/SEALS | A-3802375 | | 1.00 |
next >> | Item Number | Description | Qty |
| A-IK2060F4 | In-Frame Engine Overhaul Kit (Std.) - Fracture Split Conn Rod | 1 |
| A-IK20604 | In-Frame Engine Overhaul Kit (Std.) | 1 |
| A-IK2062F4 | In-Frame Engine Overhaul Kit (0.50 MM) .020"- Fracture Split Conn Rod | 1 |
| A-IK20624 | In-Frame Engine Overhaul Kit (0.50 MM) .020" | 1 |
| A-IK2064F4 | In-Frame Engine Overhaul Kit (1.00 MM) .040"- Fracture Split Conn Rod | 1 |
| A-IK20644 | In-Frame Engine Overhaul Kit (1.00 MM) .040" | 1 |
| A-OK2060F4 | Major Eng OH Kit (STD) - Fracture Split Conn Rod | 1 |
| A-OK20604 | Major Engine Overhaul Kit (Std.) | |
| A-OK2062F4 | Major Eng OH Kit (.50mm) - Fracture Split Conn Rod | 1 |
| A-OK20624 | Major Eng OH Kit (.50mm) | 1 |
| A-OK2064F4 | Major Eng OH Kit (1.00mm) - Fracture Split Conn Rod | 1 |
| A-10152 | Assembly Lube; 8 oz | 1 |
| A-10153 | Assembly Lube; Case of 12 8 oz bottles | 1 |
| A-3353978 | Seal; Crankshaft Rear | 1 |
| A-3802062 | Kit, Piston; 0.50 MM | 4 |
| A-3802064 | Kit, Piston; 1.00 MM | 4 |
| A-3802273 | Thermostat | 1 |
| A-3802355 | Kit; Intake Valve | 1 |
| A-3802356 | Kit; Exhaust Valve | 1 |
| A-3900276 | Spring; Valve | 1 |
