Engine + Transmission Return Policy & Warranty

MPerformance.parts does our best to accurately describe every advertised engine, transmission, differential and related component. Used automotive parts may show normal wear, cosmetic marks or minor imperfections. Customers must review the listing photos, description and fitment details before ordering.

It is the purchaser’s responsibility to confirm the item is correct for the vehicle and intended use. If you are unsure, contact us with your VIN, part number, photos and vehicle details before purchase.

30-Day Start-Up Warranty

Eligible engines, transmissions and differentials purchased from MPerformance.parts include a 30-day start-up warranty from the date the goods are received, unless otherwise stated in writing.

The part must be installed within the warranty period by a suitably qualified mechanic with relevant experience. MPerformance.parts may request the mechanic’s certification, contact details, installation invoice, diagnostic notes, photos, video evidence and a written defect report before assessing a claim.

First Start and Inspection Requirements

For engine and transmission claims, customers may be required to provide a clear first-start video, diagnostic report and evidence that correct installation procedures, fluids, filters, coding, programming and adaptation steps were followed.

Problems must be reported to MPerformance.parts before repairs, teardown or third-party work is carried out. Repairs performed without prior written authorisation may affect warranty assessment.

What the Warranty Covers

Where a covered internal defect is confirmed, MPerformance.parts will, at its discretion and in accordance with Australian Consumer Law, repair, replace or otherwise provide an appropriate remedy for the defective engine block, cylinder head, transmission, differential or covered internal component.

What the Warranty Does Not Cover

The warranty does not cover external accessories or bolt-on components, including but not limited to manifolds, turbos, superchargers, alternators, starters, pumps, sensors, solenoids, wiring, torque converters, clutches, flywheels, flex plates, valve covers, oil pans, fuel system components, belts, hoses, timing components, air-conditioning parts or power steering components unless specifically stated in writing.

The warranty also does not cover damage caused by incorrect installation, overheating, oil starvation, blocked radiators, incorrect fluids, poor water circulation, faulty ancillary components, tuning, aftermarket ECU use, boost controllers, nitrous oxide, racing or motorsport use, misuse, neglect, accident damage, unauthorised repairs or use outside the part’s intended purpose.

Return and Claim Process

All warranty and defective-item claims must be submitted by email to sales@mperformance.parts before the item is returned. Items sent back without prior approval and a return authorisation may not be accepted.

Returned engines, transmissions and differentials will be inspected, including serial-number checks and condition checks against dispatch records. The customer is responsible for safe return packaging and return freight unless MPerformance.parts agrees otherwise in writing or a remedy is required under Australian Consumer Law.

Body, Interior, Wheels and Suspension Parts

Used body parts, interior parts, wheels and suspension components are sold based on their listed condition and photos. These parts are not covered by the engine/transmission start-up warranty and cannot be returned once installed, painted, modified or damaged during installation.

Custom and Special Orders

Custom orders, special-order items, VIN-specific components, electronics, modules, airbags, seatbelts and non-stock items are subject to the MPerformance.parts Refund Policy and may be non-returnable for change of mind, incorrect ordering, delayed installation or compatibility issues caused by incorrect customer-supplied information.

Australian Consumer Law

Nothing in this policy excludes, restricts or modifies any rights or remedies you may have under the Australian Consumer Law.