Details
John Deere 693D Feller Buncher thru ESN 299999 w/ 6414T engine
John Deere JD544B Wheel Loader w/ 6414D engine
John Deere 6414D Power Unit w/ 6414D engine
John Deere 544C Wheel Loader w/ 6414T engine
John Deere 648D Log Skidder thru ESN 299999 w/ 6414T engine
John Deere 690DR Excavator thru ESN 299999 w/ 6414T engine
John Deere 544D Wheel Loader w/ 6414T engine
John Deere 755B Crawler Thru ESN 299999 w/ 6414T engine
John Deere JD670 Grader w/ 6414T engine
John Deere 655B Crawler Thru ESN 299999 w/ 6414T engine
John Deere 643 Feller Buncher thru ESN 299999 w/ 6414T engine
John Deere 672B Grader thru ESN 299999 w/ 6414T engine
John Deere 544DH Wheel Loader w/ 6414T engine
John Deere 755BH Crawler Thru ESN 299999 w/ 6414T engine
John Deere 655 Crawler w/ 6414T engine
John Deere 690D Excavator thru ESN 299999 w/ 6414T engine
John Deere JD750 Crawler w/ 6414T engine
John Deere 624E Wheel Loader thru ESN 299999 w/ 6414T engine
John Deere JD755 Crawler w/ 6414T engine
John Deere 670B Grader thru ESN 299999 w/ 6414T engine
John Deere JD670A Grader w/ 6414T engine
John Deere 750B Crawler Thru ESN 299999 w/ 6414T engine
John Deere JD544B Wheel Loader w/ 6414T engine
John Deere 755A Crawler w/ 6414T engine
John Deere 640D Log Skidder thru ESN 299999 w/ 6414T engine
John Deere 6414T Power Unit w/ 6414T engine
John Deere 624EH Wheel Loader thru ESN 299999 w/ 6414T engine
John Deere JD672A Grader w/ 6414T engine
John Deere JD640 Log Skidder w/ 6414T engine
John Deere 590D Excavator Thru ESN 299999 w/ 4276T engine
John Deere 550B Crawler Thru ESN 299999 w/ 4276T engine
John Deere JD440C Log Skidder w/ 4276T engine
John Deere JD555 Crawler w/ 4276T engine
John Deere 448D Log Skidder w/ 4276T engine
John Deere 555G Crawler Thru ESN 299999 w/ 4276T engine
John Deere 455E Crawler w/ 4276T engine
John Deere 450G Crawler Thru ESN 299999 w/ 4276T engine
John Deere 595 Excavator w/ 4276T engine
John Deere 550A Crawler Thru ESN 299999 w/ 4276T engine
John Deere 440D Log Skidder Early w/ 4276T engine
John Deere 450E Crawler w/ 4276T engine
John Deere 4276T Power Unit w/ 4276T engine
John Deere 410C Backhoe Loader Thru ESN 299999 w/ 4276T engine
John Deere 510C Backhoe Loader Thru ESN 299999 w/ 4276T engine
John Deere 548D Log Skidder w/ 4276T engine
John Deere 540D Log Skidder Thru ESN 299999 w/ 4276T engine
John Deere 540B Log Skidder w/ 4276T engine
John Deere 595D Excavator Thru ESN 299999 w/ 4276T engine
John Deere 450E Crawler w/ 4276D engine
John Deere 510B Backhoe Loader w/ 4276D engine
John Deere 410C Backhoe Loader Thru ESN 299999 w/ 4276D engine
John Deere 650G Crawler Thru ESN 299999 w/ 4276T engine
John Deere 610C Backhoe Loader w/ 4276T engine
John Deere 610B Backhoe Loader w/ 4276T engine
John Deere 555B Crawler Thru ESN 299999 w/ 4276T engine
John Deere 555A Crawler Thru ESN 299999 w/ 4276T engine
John Deere 455G Crawler Thru ESN 299999 w/ 4276D engine
John Deere 493D Feller Buncher Thru ESN 299999 w/ 4276D engine
John Deere JD550 Crawler w/ 4276T engine
John Deere 340D Log Skidder w/ 4276D engine
John Deere 510B Backhoe Loader w/ 4276T engine
John Deere 2630 Tractor w/ 4276D engine
John Deere 2640 Tractor w/ 4276D engine
John Deere 4276D Power Unit w/ 4276D engine
John Deere 490D Excavator Thru ESN 299999 w/ 4276D engine
John Deere 495D Excavator Thru ESN 299999 w/ 4276T engine
John Deere 450G Crawler Thru ESN 299999 w/ 4276D engine
John Deere 444E Wheel Loader Thru ESN 299999 w/ 4276T engine
John Deere 550G Crawler Thru ESN 299999 w/ 4276T engine
John Deere 455G Crawler Thru ESN 299999 w/ 4276T engine
John Deere 344E Wheel Loader Thru ESN 299999 w/ 4276D engine
OEM Part Number Cross Reference(s): R79561
Warranty Information
Overview
We stand behind every part we sell — new, rebuilt, or used. While RF Engine is not the manufacturer and cannot extend additional warranties, we do guarantee that each product will arrive as described, in usable condition, and free from material defects or misrepresentation.
Warranty Coverage
- New Parts: Covered under the original manufacturer’s warranty. All terms and coverage are set by the manufacturer. Copies available upon request.
- Rebuilt, Reconditioned, and Used Parts: Backed by an inspection-only warranty unless otherwise stated. As with new parts, RF Engine cannot provide further warranty coverage beyond the manufacturer’s terms.
- No Additional Warranty: RF Engine does not offer any express or implied warranties. However, if an issue arises, we are here to assist and will support you through any applicable manufacturer claim process.
Our Guarantee
All parts are guaranteed to be in the condition stated at the time of sale and free from misrepresentation. If something isn’t right, we’ll work with you to resolve it — including returns, exchanges, or refunds when appropriate.
- We sell parts — we don’t make them — but we stand behind what we sell.
- Guaranteed to match the description or your money back.
- Manufacturer’s warranty applies where available; we’ll help if you ever need it.
Used Parts — What to Expect
Used parts are cleaned, inspected, and guaranteed to be usable, but please note:
- They often have signs of wear, surface rust, blemishes, or cosmetic imperfections.
- They may include old gaskets or residue and likely require further cleaning or machining before installation.
- They are not refurbished, remanufactured, or restored to like-new appearance.
We recommend careful inspection and strongly encourage installation by a qualified heavy-duty diesel mechanic.
- Worn, not worn out — used parts may show signs of age but are fit for service.
- All used parts are tested for usability, not appearance.
Questions?
If you have questions about a part’s condition, warranty, or how we handle returns and guarantees, feel free to contact us. We’re here to help.
Last Updated: June 22, 2025
All specifications and numbers are provided for reference only and should be independently verified before use. While we guarantee our parts match their descriptions and accept returns for any discrepancies, we cannot be held liable for installation costs, modifications, or consequential damages. Questions about compatibility? Contact our parts experts at 800-828-6943, sales@dieselcranks.com, or via live chat, Mon-Fri 8am-5pm EST.