Auto Engine & Transmission Warranty

JDM engines and transmissions offered by Auto Engine & Transmission are sourced from vehicles in Japan. Where applicable, products undergo inspection and testing before being offered for sale.

After products arrive at our facility, they may undergo visual, digital, mechanical, and compression testing as applicable. Available inspection and product-condition information is provided on the individual product listing.

Auto Engine & Transmission Warranty Terms & Conditions

Warranty coverage varies by product:

  • Used Performance Engines: 90 days

  • Used Replacement Engines: 90 days

  • Used Replacement Transmissions: 90 days

  • Used Performance Transmissions: 30 days

  • Mechanical and Electrical Parts: No warranty

  • ECU: 30 days

Deposit and Item Hold

Advance deposits made toward engines, transmissions, or parts place the item on hold for 15 days. During this period, the buyer may complete the remaining payment.

After the 15-day hold period, Auto Engine & Transmission reserves the right to release the item from hold if no additional payment has been received.

The full balance must be paid within 45 days of the initial deposit.

Warranty Exclusions

The warranty does not cover:

  • Loss or damage caused by overheating, misuse, abuse, or improper operation of the engine or transmission.

  • Towing, freight, delivery, or other transportation charges.

  • Damage or failure caused by improper installation.

  • Labor costs associated with removing, replacing, or installing an engine or transmission.

  • Damage or failure caused by modifications or use outside the intended application.

  • Damage or failure caused by a defective timing belt.

  • Damage or failure caused by modifications or forced induction.

Warranty Disclaimer

Auto Engine & Transmission is not responsible for damage or loss resulting from improper installation, improper use, or use outside the intended application of an engine or transmission.

To the extent permitted by applicable law, we are not responsible for incidental, consequential, commercial, or other indirect losses arising from the purchase, installation, use, or inability to use a product.

Warranty Claim Procedure

Warranty claims must be submitted by email and should include a clear description of the issue and supporting documentation.

Customers may be required to provide photographs, the original invoice, and a mechanic’s report to support a warranty claim.

Customers should inspect the package upon delivery. If visible damage or discrepancies are found, the customer should document the issue and have the delivery driver note the damage on the proof of delivery where possible.

Step 1 — Submit the Claim

Warranty claims must be initiated by email with a clear description of the issue.

Step 2 — Return the Product

If a return is required, the engine or transmission must be returned in the same condition in which it was shipped. Missing components or parts may affect warranty eligibility.

Step 3 — Inspection and Resolution

The customer is responsible for returning the product for inspection unless otherwise agreed.

If the product is determined to have a defect covered by the applicable warranty, Auto Engine & Transmission will provide the applicable warranty resolution, which may include a replacement product where available.

Return Policy

Return requests must comply with the applicable warranty and return terms.

  • Returns must be requested within 45 days from the date of purchase or initial deposit, subject to the applicable product and return conditions.

  • Original shipping charges are non-refundable. Return shipping costs are the customer’s responsibility unless otherwise required by applicable law or agreed by Auto Engine & Transmission.

  • Returned products must be in the same condition in which they were sold and must meet the applicable return requirements.

  • Customers must contact us by email before returning an item.

  • Returned products are inspected after receipt.

  • If an item has been damaged, altered, or otherwise made ineligible for return while in the customer’s possession, a refund or replacement may not be available.

  • After inspection, the customer will be notified whether the applicable remedy is a replacement or refund.

  • If a warranty or return claim is determined not to be valid under the applicable terms, no replacement or refund will be issued.