Original Equipment Quality or Better
Parts that meet or exceed OEM specifications. Guaranteed performance you can trust. Reliability built into every component.
More than 100-years of Engine Expertise
A century of collective diesel knowledge and 10+ acres of engines and engine parts, we are more than just an online reseller or call center. We know heavy-duty diesel.
Here for You for the Long Haul
Same location and same phone number for the last 50 years. Same commitment to getting you the right parts at the right price.
New, Reman, & Used
RF Engine offers an expansive offering of new aftermarket, remanufactured, and used engines and engine parts all under one roof.
Details
Overhaul Kit New John Deere 6.404D" 6 Cyl Diesel Block C/N: R49470, R49650, R59850, R72128, R87558 Agricultural: 4040, 4230, 6600, 7700 Bore 4.25", Pin 1.50" ESN: 335846 and UpFree Freight Lower 48 States Business to Business
Warranty Information
New parts are covered under the original manufacturer's warranty. Rebuilt and used parts come with an inspection-only guarantee unless otherwise stated. While RF Engine is not the manufacturer and cannot extend additional warranties, we're here to help if any issues arise — including support with manufacturer warranty claims.
We guarantee all parts to be as described and in usable condition, free from misrepresentation or material defects. If something isn't right, we'll work with you to make it right.
Used parts are cleaned and inspected, but may show normal wear, surface rust, or cosmetic imperfections. Most will require further cleaning or machining prior to installation. We strongly recommend installation by a qualified heavy-duty diesel mechanic.
View full warranty policy
We guarantee all parts to be as described and in usable condition, free from misrepresentation or material defects. If something isn't right, we'll work with you to make it right.
Used parts are cleaned and inspected, but may show normal wear, surface rust, or cosmetic imperfections. Most will require further cleaning or machining prior to installation. We strongly recommend installation by a qualified heavy-duty diesel mechanic.
View full warranty policy
