3-Year Warranty Policy
Last updated: September 4, 2026
Every engine, transmission, and part sold by Used Auto Nation is backed by our written 3-year warranty — one of the strongest in the used auto parts industry.
3-year coverage
From the original invoice date on every part.
Defect protection
Covers parts that fail under normal use.
Simple claims
One form, no restocking fee on approved claims.
Real support
Talk to a warranty specialist, not a script.
What Is Covered
Our 3-year warranty covers defects in material or workmanship discovered after a part leaves our warehouse, provided the part is used in the vehicle and application it was sold for and installed according to standard industry practice. This includes engines, transmissions, diesel and truck engines, and eligible mechanical and electrical components sold through Used Auto Nation.
What Is Not Covered
- Damage from improper installation, misuse, or lack of maintenance
- Wear items such as gaskets, seals, or fluids replaced during a normal install
- Parts modified, altered, or repaired by a party other than Used Auto Nation
- Cosmetic parts sold explicitly “as-is” or for parts/repair only
- Failure caused by a pre-existing, unrelated mechanical issue in the vehicle
How to File a Warranty Claim
- Contact our warranty team at (888) 235-7861 or support@theautonations.com.
- Provide your order number, part description, and a description of the issue.
- Our technicians will review the claim and may request photos, diagnostic codes, or a shop inspection to confirm the defect.
- Approved claims are resolved with a replacement part, repair, or refund at our discretion, plus reimbursement of standard return shipping.
Labor & Installation Costs
The 3-year warranty covers the part itself. Labor, diagnostic, and reinstallation costs are not included unless purchased separately as part of an extended labor plan at the time of sale.
Questions About Your Warranty
Our warranty specialists are available at (888) 235-7861 or support@theautonations.com. Used Auto Nation is headquartered in California with warehouses in Trenton, NJ, Houston, TX, and Nashville, TN.