Warranty & Returns

Last updated: July 2026

All returns, warranty claims, and adjustments are subject to the following conditions.

Engine & Transmission Warranty

• Engines and transmissions may carry a standard 5-year or 7-year warranty, as noted on your invoice or written order confirmation.
• Warranty coverage may include both parts and labor when stated in writing on your invoice.
• If a covered complaint or mechanical issue is reported within the warranty period, Best Auto Zone will review the claim and may arrange replacement with a comparable engine or transmission.
• Replacement processing time is typically 5 to 7 business days after the claim is approved and all required information is received.

Returns

• All returns must be made within 30 days of the date of purchase.
• The original invoice must accompany all returns.
• Parts must be returned in the same condition, complete, and undamaged.
• All returns are subject to a 20% restocking fee.
• Refunds on cuts and other non-standard or custom-prepped parts are subject to a 30% labor charge.
• All cores must be drained of fluids and complete as sold in order to obtain credit.
• Deposits and prepaid special-order parts are non-refundable.
• All returns are for in-store credit. Credit memos expire one year from the date of return.

Price Adjustments

• All requests for price adjustments must be made within 10 days of the original invoice date.
• Price adjustments will not exceed 50% of the original purchase price.
• The part for which a price adjustment is requested must be in returnable condition.
• Best Auto Zone may require documentation or photos of damage as justification for any price adjustment.
• All price adjustments are for in-store credit. Credit memos expire one year from the date of issuance.

Small Parts, Electrical Parts & Mechanical Accessories

• A 6-month part replacement warranty applies unless otherwise noted on your invoice.
• All warranty claims must be made within the applicable warranty period. Claims made after expiration will not be considered.
• The original invoice must accompany any warranty claim.
• The defective part must be returned to Best Auto Zone for replacement.
• A lifetime part replacement warranty may be available for an additional fee and will be noted on your invoice when purchased.
• The warranty term is based on the original purchase date.

Driveline & Major Components

• A 6-month part replacement warranty applies unless otherwise noted on your invoice.
• All warranty claims must be made within the applicable warranty period. Claims made after expiration will not be considered.
• The original invoice must accompany any warranty claim.
• Defective driveline components must be made available for inspection by Best Auto Zone or its representative while still installed in the vehicle before warranty coverage will be considered.
• New fluids, filters, seals, and gaskets must be used during installation. Lubricants and fluids must match the type recommended by the manufacturer.
• Receipts for installation items must accompany the warranty claim.
• Parts and labor warranties may be available for an additional cost and will be indicated on your invoice.
• Labor claims, when covered, are paid based on the Chilton Labor Guide at a rate of $80.00 per hour. Labor warranties are limited to the lesser of the purchase price of the component or $500.00.
• Best Auto Zone reserves the right to provide warranty repair at a facility of its choice.
• Labor claims will only be paid if a parts and labor warranty is indicated on your invoice.
• The warranty term is based on the original purchase date.

Sheetmetal & Body Parts

• Unless otherwise noted on your invoice, sheetmetal and body parts carry a lifetime corrosion or manufacturer defect replacement warranty.
• The original invoice must accompany any warranty claim.
• The defective part must be returned to Best Auto Zone for replacement.

Warranty Exclusions

Our warranty does not cover the following items or conditions:

• The purchaser's loss of time, inconvenience, loss of vehicle use, towing expense, installation expense, commercial loss, rental cars, or other consequential damages.
• On driveline components: fluids, gaskets, seals, filters, intake manifolds, exhaust manifolds, clutches, water pumps, wiring, thermostats, sensors, hoses, belts, frost plugs, spark plugs, and injectors.
• Claims resulting from accident, abuse, neglect, alteration, improper maintenance, or improper installation.
• Claims resulting from the failure of other existing components.
• Claims resulting from overheating due to cooling system failure.
• Parts installed in vehicles used for commercial, racing, or off-road purposes, or parts used for any purpose other than the original application.
• Warranty coverage is for the original purchaser only. Warranties are not transferable.

Our Commitment

Best Auto Zone provides quality automotive parts in a timely manner and works to avoid surprises on delivery. Our team uses its parts knowledge and customer service commitment to help customers feel confident about their buying experience.

Questions

For questions about returns, warranty coverage, or a claim, contact us at info@bestautoszone.com or (915) 808-4805.