90-Day Warranty Policy
Clear terms for every used engine and transmission we sell.
1. Coverage
Every used engine and used transmission sold by KM Pathway LLC (“we”, “us”) includes a 90-day limited parts warranty starting on the date of delivery. The warranty covers internal mechanical failure of internally lubricated parts:
- Engines: block, cylinder heads, crankshaft, camshaft(s), connecting rods, pistons, valves and oil pump.
- Transmissions: case, internal gears, shafts, clutch packs, bands and valve body.
2. What we will do
If a covered part fails during the warranty period, we will, at our option, provide a replacement unit of the same type or issue a refund of the purchase price of the part. Shipping of the replacement within the lower 48 states is free.
3. What is not covered
- Labor, removal or installation costs, diagnostics, towing, rental vehicles, fluids, filters and gaskets.
- External and bolt-on parts such as sensors, wiring, intake and exhaust manifolds, turbochargers, starters, alternators, pumps, torque converters, flywheels, flexplates and electronic control units, unless specifically agreed in writing.
- Failures caused by overheating, lack of lubrication, improper installation, incorrect fluids, modification, racing, commercial abuse, accident or contamination from the previous unit.
- Parts that have been disassembled or altered without our written approval.
4. Installation requirements
- The unit must be installed by a licensed or professional repair facility; keep the itemized receipt.
- Replace all fluids, filters, seals and gaskets with new parts of the correct specification.
- For engines: replace the water pump, thermostat and timing components as the manufacturer recommends, and flush the radiator and oil cooler.
- For transmissions: flush the transmission cooler and lines and fill to the correct fluid level and type.
- Inspect the unit and confirm it matches your vehicle before installation.
5. How to make a claim
Call us at (888) 928-5882 or use our contact form before any repair or removal work begins. Provide your order number, the installation receipt and a description of the problem. We may ask for photos, videos or a diagnostic report. Do not disassemble the unit before we approve the claim.
6. Other terms
This warranty is not transferable and applies only to the original purchaser. It is our only warranty; to the extent permitted by law, all other warranties, express or implied, are excluded. Our total liability is limited to the purchase price of the part. Some states do not allow certain limitations, so some of these terms may not apply to you.
This policy is provided as a general draft and should be reviewed by a qualified legal professional before publishing. Last updated: October 7, 2026.