Details
John Deere 6620 Combine w/ 6466D engine
John Deere 4240 Tractor w/ 6466D engine
John Deere 6466DF Power Unit w/ 6466D engine
John Deere JD690A Excavator w/ 6404T, 6404A engine
John Deere 6602 Combine After 163500 w/ 6404T, 6404A engine
John Deere 4430 Tractor w/ 6404T, 6404A engine
John Deere 4630 Tractor w/ 6404T, 6404A engine
John Deere 4320 Tractor w/ 6404T, 6404A engine
John Deere JD646 Compactor w/ 6404T, 6404A engine
John Deere 4520 Tractor w/ 6404T, 6404A engine
John Deere JD644A Wheel Loader w/ 6404T, 6404A engine
John Deere 7020 Tractor Early w/ 6404T, 6404A engine
John Deere 4620 Tractor w/ 6404T, 6404A engine
John Deere 5200 Forage Harvester Early w/ 6404T, 6404A engine
John Deere JD690 Excavator w/ 6404T, 6404A engine
John Deere JD644 Wheel Loader w/ 6404T, 6404A engine
John Deere 7700 Combine After 8000 w/ 6404T, 6404A engine
John Deere 7700 Combine After 8000 w/ 404D engine
John Deere 6602 Combine After 1500 w/ 404D engine
John Deere JD740 Log Skidder w/ 6404T, 6404A engine
John Deere 693B Feller Buncher w/ 6404T, 6404A engine
John Deere 6600 Combine After 156500 w/ 404D engine
John Deere 4040 Tractor w/ 404D engine
John Deere 4230 Tractor w/ 404D engine
John Deere 7020 Tractor Late w/ 6404T, 6404A engine
John Deere 690B Excavator w/ 6404T, 6404A engine
John Deere 5200 Forage Harvester Late w/ 6404T, 6404A engine
John Deere 5440 Forage Harvester w/ 6404T, 6404A engine
John Deere 6600SH Combine After 305672 w/ 6404T, 6404A engine
OEM Part Number Cross Reference(s): AR56639
Our aftermarket replacement parts are built to OEM-equivalent standards. They have been produced to meet or exceed original equipment specifications for material quality, dimensional tolerance, and field durability — the same rigors the factory part is designed to handle. The result is a component that installs like factory, performs like factory, and delivers long service life without the dealer price tag.
Fitment Guide
Warranty Information
Reliance Power Parts Warranty Policy
The Reliance Power Parts (RPP) warranty policy covers parts and labor necessary to repair a warrantable failure to the functional condition of the application that existed immediately prior to the failure, as detailed below. This warranty applies to direct customers of RPP only and is non-transferable.
Coverage Periods
- New Internal Engine Parts (Ag/Industrial): 1 year from invoice date, unlimited miles/hours
- Engine Overhaul Kits (Heavy-Duty On-Highway): 2 years from invoice date, unlimited miles/hours
- New Engine Accessories: 1 year from invoice date, parts replacement only
- Remanufactured Engine Accessories: 6 months from invoice date, parts replacement only
- Remanufactured Engine & Drivetrain Parts: 6 months from invoice date, parts replacement only
- Drivetrain Parts: 1 year from invoice date, parts replacement only
- Complete Engines, New Long Blocks & New Short Blocks (Reliance Manufactured): 6 months from invoice date, parts replacement only
- Remanufactured Long Blocks & Short Blocks (Reliance Manufactured): 90 days from invoice date, parts replacement only
Engine accessories include turbochargers, fuel injectors, hydraulic pumps, engine oil pumps, oil coolers, water pumps, and electrical components.
Manufacturer's Warranty Items
To serve a wider application base, RPP offers lower volume, rare application, and remanufactured parts from a variety of manufacturers. These parts will be noted on your invoice as subject to a "Manufacturer's Warranty" policy and are not covered under this policy. Engines, long blocks, medium blocks, and short blocks produced by any company other than Reliance are solely covered by the manufacturer's warranty. Contact your Reliance representative for details.
Parts & Labor Coverage
- Parts: Covered at current customer pricing using new or remanufactured RPP approved parts
- OEM/Outside Parts: When RPP parts are available, OEM parts will be credited at RPP pricing. Parts not available from RPP will be covered at billed rate with invoice required
- Labor: Offered at RPP's discretion, not to exceed published flat-rate times and maximum regional wholesale hourly labor rate
- Holiday/Overtime Rates: Not covered
What's Not Covered
This warranty does not cover failures resulting from:
- Owner or operator abuse or neglect
- Operation without adequate coolant, fuel, or lubricants
- Over-fueling or over-speeding
- Lack of maintenance of lubricating, coolant, or air intake systems
- Improper storage, starting, warm-up, run-in, or shut-down practices
Coverage does not include:
- Troubleshooting or diagnostic time
- Towing, transport, or down-time
- Rental fees or incidentals
- Delivery charges, travel, meals, or lodging
- Business losses, docking, or harbor charges
Responsibilities
- Installer: Ensure parts are correct for the application and install according to OEM procedures, specifications, and accepted industry standards
- Owner: Operate and maintain equipment as specified in OEM operation and maintenance manuals
How to File a Claim
- RPP must be notified prior to the end of the warranty period
- All warranty repairs must be authorized by RPP technical staff
- Request a Warranty Claim Form for the return of parts
- Return all claimed parts to the indicated location within 30 days of receiving a Return Merchandise Authorization
- Include failed parts, completed Warranty Claim Form, and copies of related work orders or invoices
- Ship parts freight pre-paid in a condition that makes examination possible
- Parts received without a Warranty Claim Form will be returned freight collect
Important Notes
- Professional Installation Required: We strongly recommend installation by a qualified technician to ensure proper break-in and operation
- Keep Your Records: Retain your invoice and service records for warranty claims
- Questions?: If you're unsure about coverage or need assistance, please contact us
The warranties set forth herein are the sole warranties made by RPP regarding its parts. RPP makes no other warranties, expressed or implied, of merchantability or fitness for a particular purpose.
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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.