Effective date: September 22, 2026
Please read this policy before installing any part. Most warranty claims are denied because installation requirements below were not followed.
Auto parts warranty
Used engines and transmissions sold by Brothers United LLC include a limited parts warranty of 90 days from the delivery date, unless a different period is written on your invoice. The warranty covers internal mechanical failure:
- Engines: the block, cylinder heads, crankshaft, camshafts, pistons and connecting rods.
- Transmissions: the case and internal hard parts.
The warranty does not cover labor, fluids, towing, rental vehicles, shipping costs, or external and bolt-on parts such as sensors, gaskets, seals, belts, hoses, manifolds, starters, alternators, turbochargers and wiring.
Installation requirements
To keep your warranty valid:
- The part must be installed by a licensed or ASE-certified repair facility, and you must keep the installation invoice.
- Engines: replace the timing belt or chain components, water pump, thermostat, gaskets and seals, and fill with fresh oil, filter and coolant before starting.
- Transmissions: flush or replace the transmission cooler and lines, and fill with the manufacturer-specified fluid.
- The part must not be disassembled, modified, overheated, run without fluids, or used for racing or commercial towing beyond its rating.
- Warranty markings and paint seals on the part must remain intact.
Returns for parts that have not been installed
- You may return an uninstalled part within 30 days of delivery, in the same condition it was delivered.
- Call or email us for a Return Authorization (RA) number first. Returns without an RA number cannot be accepted.
- A 20% restocking fee applies to returns that are not caused by our error.
- Return shipping is paid by the customer unless we shipped the wrong part or the part arrived defective.
Wrong or damaged parts
Inspect your delivery before signing. Note any visible damage on the carrier's delivery receipt and take photos. Tell us within 48 hours of delivery if the part is damaged or does not match what you ordered. If we made the error, we will replace the part or refund you in full, including shipping.
Warranty claims
Contact us before removing a part under warranty. We may ask for photos, videos, diagnostic reports and your installation invoice. If a claim is approved, we will send a replacement part or issue a refund of the part price, at our choice. Replacement parts carry the remainder of the original warranty period.
Non-returnable items
- Parts that have been installed, except under an approved warranty claim.
- Electrical and electronic parts once installed or connected.
- Special-order or remanufactured units, unless they arrive defective.
Refunds
Approved refunds are issued to the original payment method within 7 to 10 business days after we receive and inspect the returned part. Original shipping charges are non-refundable unless the return is due to our error.
Freight and logistics services
- Cancellations: you may cancel a shipment without charge before a truck is dispatched. Cancellations after dispatch may incur a truck-ordered-not-used (TONU) fee.
- Freight damage or loss: note any damage or shortage on the bill of lading or delivery receipt at delivery, and report it to us within 5 days. Claims are handled under the carrier's liability terms and applicable federal law, and must be filed in writing within 9 months of delivery.
- Refunds: freight charges are refunded only when a shipment is not performed because of our failure.
Contact us
Brothers United LLC
1719 Castle Creek Dr
Missouri City, TX 77489
Phone: +1
Email: info@brothersunitedllc.com