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Major Engine Overhaul Kit PART #: OK4591

Major Engine Overhaul Kit
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  • Major Engine Overhaul Kit - OK4591

Description & Notes

Part # OK4591
Notes & Description 4 CYL., O-Rings in block, Block #: R53230, R53250, R55034, R72973, T32342 30mm
Bore: 3.86"98mm, Pin: 1.185", 30mm
Associated Items A-AR70633 Rings, Piston 4
A-AR71617 O-Ring Kit, Cylinder 4
A-AR89564 Injector, Pencil 4
A-AR91660 Gear, Upper Timing 1
A-AT18030 Crankshaft 1
A-AT24252 Gear, Lower 1
A-IK4591 IN FRAME OH KIT 1
A-RE11410 Rotator, Valve 4
A-RE19733 Connecting Rod 4
A-RE26282 Shaft, Balancer w/Gear (RH) 1
A-RE26283 Shaft, Balancer w/Gear (LH) 1
A-RE27667 Pump, Fuel Lift Transfer 1
A-RE31929 Cooler 1
A-RE31973 Arm, Rocker 8
A-RE35685 Pump, Oil 1
A-RE519735 Shaft, Rocker 1
A-R113752 Tube, Engine Oil Pump 1
A-R26125 Spring, Valve 8
A-R48000 Seal, Pencil Injector 4
A-R51112 Retainer, Piston Pin 8
Kit Components Piston Liner Kit A-AR71591 4.00
Bearing, Main A-RE27352 STD 4.00
A-RE27353 .010 4.00
A-RE27360 .020 4.00
A-RE27368 .030 4.00
Bearing, Thrust A-AT21139 STD 1.00
A-AT21132 .010 1.00
A-AT21134 .020 1.00
A-AT21136 .030 1.00
Bearing Set, Conn Rod A-RE27348 STD 4.00
A-RE27349 .010 4.00
A-RE27358 .020 4.00
A-RE27364 .030 4.00
Bushing, Conn Rod A-T23471 4.00
Capscrew, Conn Rod A-R74194 8.00
Seal, Front Crankshaft A-AR67942 1.00
Seal, Rear Crankshaft A-AR92893 not used w/ flywheel hou 1.00
Bushing, Balancer Shaft A-R57160 STD 6.00
Gasket OH Set w/o Seals A-RE38558 1.00
Package Quantity 1

Product Fit

Check if this product fits your machine type, make and model

Additional Information

Did you know the OK4591 major engine overhaul kit fits industrial/construction machines, and tractors? TractorJoe does, which is why we strive to verify our parts, ensuring they fit your John Deere properly. This major engine overhaul kit is not only made for the John Deere 400 industrial/construction machine, but fits the John Deere 480, and John Deere 2020 tractor as well.

Whether you have the 400, the 480, or something else, John Deere major engine overhaul kits are expensive and thats why we sell major engine overhaul kits direct at significantly lower prices than your John Deere dealer. You can save up to 70% with TractorJoe.

Price is just one part of the equation though- quality matters too. We don't want you replacing your major engine overhaul kit more than you need to, which is why we back our parts with an industry leading warranty. Even if your 400, 480, 2020, 2510, or 440 is not your main piece of equipment, TractorJoe knows that having it up and running is always important.

Our team is trained and ready to help. So if you're looking for parts for your John Deere 400, John Deere 480, or any other machine, we've got you covered. Our Q / A community is filled with answers to common issues and our staff will always assist with your John Deere equipment.

Major Engine Overhaul Kit

PART #: OK4591

Price: $927.65


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Frequently Asked Questions
When will I get my items?
Once your items have shipped it takes around 2 to 4 days to arrive at your location. You can track the shipment to find the expected delivery date or if there are any issues that have caused a shipping delay. Destinations outside the continental US will take additional time for delivery.
What if I will not be available to receive my shipment?
We've got you covered! Delivery carriers will generally let you leave a signed note on your door with instructions. UPS will generally leave a ground shipment at the door in rural and suburban locations without a note. You can also instruct the UPS driver to take it back to the customer service center for pickup if you do not want it left. For detailed information please contact the delivery carrier.
Can you ship to an APO/FPO address?
We unfortunately are no longer able to ship to AFO/FPO addresses.
How much is shipping?
Shipping costs vary based on product weights and where you're sending it to. You can calculate shipping costs in the shopping cart or checkout page.