Warranty overview
We stand behind the quality of every used engine and transmission we sell. All parts come with a 6-month warranty covering manufacturing defects and internal component failures.
Warranty Overview
Full coverage from date of installation on all internal components.
No mileage cap — drive with confidence for the full warranty period.
Our team reviews and responds to every claim within two business days.
Approved replacements ship to your door at no extra cost.
Standard Warranty Tiers
Replacement and return warranty included at no additional cost for engines and transmissions from model years 1991 to 2000.
Replacement and return warranty included at no additional cost for engines and transmissions from model years 2001 to 2025.
Engine Coverage Details
What's Covered
- Engine block, cylinder heads, pistons, crankshaft, camshaft, and all internal rotating assembly parts
- Valvetrain components including rocker arms, lifters, and pushrods
- Oil pump and internal lubrication system components
- Manufacturing defects and material failures in core internal parts
- Warranty claims supported by a diagnostic report after the 7-day inspection window
What's NOT Covered
- Sensors, switches, ignition coils, and electrical components
- Belts, hoses, and rubber components
- Intake and exhaust manifolds
- Water pump, thermostat, and cooling system parts
- Oil pan, valve covers, and external gaskets and seals
- Turbochargers and superchargers
- Labor charges for installation or removal
- Damage from overheating, low oil, or improper installation
Peripheral parts are shipped with the engine for convenience. Transfer compatible parts from your original engine where needed — they are not covered under warranty.
Transmission Coverage Details
What's Covered
- Transmission case and internal housing
- All internal gear sets, planetary assemblies, and clutch packs
- Valve body and hydraulic components
- Torque converter (where supplied as part of the unit)
- Internal mechanical failure due to manufacturing defects or material faults
- Warranty claims supported by a diagnostic report after the 7-day inspection window
What's NOT Covered
- Transmission filter, pan gasket, and external seals
- Transmission fluid and flush services
- Solenoids, sensors, and electronic control components
- Wiring harnesses and connectors
- Shifter assembly, linkage, and cables
- Labor charges for installation or removal
- Damage from overheating, low fluid levels, or improper installation
- Failure caused by incorrect fluid type or contaminated fluid
Always install a new transmission filter and fresh fluid during installation. Reusing old fluid or a clogged filter can void your warranty and damage the unit.
Conditions That Void the Warranty
The warranty will be voided if any of the following conditions are identified. Please read carefully before installation.
Warranty Requirements
To keep your warranty valid, all conditions below must be met at the time of installation and throughout the warranty period. Missing any requirement may void your coverage.
How to File a Claim
Ready to file? Our support team is available 24/7 to assist you.
✉ File a Claim NowReturn Policy
24-Hour Cancellation
Changed your mind? Request a full refund within 24 hours of placing your order — no questions asked.
Damage Returns
If your order arrives damaged, you have a 14-day window to report and return it for a full replacement or refund.
Core Return
No core charge hassle. Keep your old engine or transmission — there are absolutely no additional fees.
Pre-Installation Checklist
Complete all steps below before installing your engine or transmission. Click each item to mark it complete and track your progress.
- Verify the engine/transmission matches your vehicle's year, make, and model
- Inspect for any shipping damage and report it within 24 hours of delivery
- Check all fluid levels and top off as needed before installation
- Replace all gaskets, seals, and timing components with brand-new parts
- Ensure all sensors, wiring harnesses, and connections are fully compatible
- Install new spark plugs, filters, and fluids — never reuse old fluids
- Verify all mounting points and hardware are clean, tight, and secure
- Photograph the odometer reading immediately before installation begins
- Review all warranty terms and activation requirements thoroughly
- Keep all documentation, invoices, and receipts for potential warranty claims