At Quality Use Auto Parts (QUAP INC), we stand by the quality and reliability of the parts we sell. Our warranty policy is designed to offer our customers peace of mind by covering manufacturing defects and ensuring proper functionality when installed by certified professionals. Below is our detailed warranty coverage, categorized for easy reference. These are used parts that has been previously installed in another vehicle and has been professionally upcycled for reuse. Stated mileage is based on available records but is not guaranteed. Normal signs of wear, including external rust or cosmetic imperfections, may be present. Parts may be interchangeable units with the same OEM specifications, though they may not be an exact visual match. It is the buyer’s responsibility to confirm compatibility via OEM part numbers. We are not liable for parts ordered due to incorrect diagnosis or assumptions.

1. Mechanical Parts Warranty

Engines

• All engines are complete assemblies, including manifolds, oil pan, timing belts and covers, and fuel injection or carburetor. However, we guarantee only the long block.

• The following components are not covered under warranty: manifolds, gaskets, seals, hoses, oil pan, timing belts, fuel injection systems, and carburetors.

• “Block Only” (Short or Long Block) purchases are guaranteed to be rebuildable only.

• Warranty covers manufacturing defects in the block, cylinder heads, pistons, crankshaft, camshaft, rockers, and oil pump.

• The warranty period is 60 days from the date of delivery.

• Warranty is void if:

  • Heat tabs are missing or melted.

  • Engine is disassembled without prior authorization.

  • Warranty documentation is not submitted within 5 business days of a claim.

  • Improper installation or overheating occurs.

• Extended warranty is activated upon installation notification.

Transmissions

• QUAP guarantees proper shifting, functional gears, and good bearings.

• To maintain warranty validity:

  • Thoroughly clean transmission components, oil pan, and replace oil and filter before installation.

  • Replace all seals and gaskets.

  • Flush and flow-test the cooler and lines.

  • Fully engage the torque converter in the front pump.

  • For manual transmissions, install a new clutch, pressure plate, and slave cylinder, and have the flywheel turned.

• The warranty period is 60 days from the date of delivery.

• Warranty does not cover leaks due to non-replaced seals, gaskets, or filters.

• Warranty is void if:

  • Transmission is disassembled without written authorization.

  • Modules are not reprogrammed by a dealer or ASE-certified mechanic.

  • Incorrect installation or improper fluid levels cause damage.

Turbos

• Seals in turbochargers are not guaranteed to be perfect.

• Warranty covers manufacturing defects only and is valid for 60 days from the date of delivery.

• Warranty is void if:

  • The turbo is disassembled without written authorization.

  • Improper installation or modifications are made.

• Extended warranty is activated upon installation notification.

2. Electrical Parts Warranty

All Modules & Electronics

• All eligible modules are covered by a standard 30 Days limited replacement warranty from the date of delivery and covers: Internal failure or malfunction not caused by external damage / Non-functional module despite correct professional installation and reprogramming / Verified ABS module defects supported by a diagnostic report from a certified mechanic or shop. If your unit qualifies, we will offer a free replacement (subject to stock availability).

• Documentation for warranty claims must be submitted within 5 business days of the claim.

• Some parts may require a reset or reprogramming by an authorized dealer or technician to function properly in your specific vehicle.

• Warranty is void if the module is disassembled without express written authorization.

• Modules MUST be reprogrammed by the dealer or an ASE certified mechanic. If unable to reprogram the module, warranty is void.

• Any warranty repairs must be authorized by QUAP and will be handled case-by-case.

• Furthermore the warranty will not apply if the ABS module fails due to: Improper installation or lack of required reprogramming / Low voltage from weak batteries, faulty alternators, or unstable power supply / Electrical issues including short circuits or blown fuses / Corrosion, water damage, or exposure to moisture / Physical damage from accidents, mishandling, or impact (e.g., dropping or hitting potholes) / Vehicle compatibility mismatches (wrong VIN or incorrect part number) / Use in racing, off-road, or extreme conditions / Repairs or modifications attempted by unqualified personnel / Sensor or wiring failures stressing the ABS module / ABS pump motor failure caused by vehicle-side faults. These issues are typically related to vehicle condition or installation errors and do not reflect the quality of the part shipped by us.

• To activate the 30 Days limited replacement-only warranty, the purchased part must be installed within 10 business days from the date of delivery.

• Proof of installation—such as a dated receipt or work order from a certified mechanic or shop—must be retained and presented at the time of any warranty claim. Failure to install the part within this timeframe will result in automatic expiration of the warranty, as unused electrical components are susceptible to environmental exposure and degradation when not promptly installed. Extended warranty will be activated upon notification, after installation of the part.

• All parts are sold for repair/replacement purposes only, not for testing or trial diagnostics.
• QUAP guarantees the correct or superseded OEM part number.
• Electrical components that are modified, altered, or tampered with are not eligible for return or warranty.
• Warranty claims require a diagnostic report from an ASE-certified shop. Improper installation or misdiagnosis will be treated as a return and the customer must cover all freight costs.

3. Body Parts Warranty

Doors, Hoods, Fenders, Bumpers, Quarter Panels & Header Panels

• Body parts are sold as-is and are guaranteed only for structural integrity.

• Accessories such as windows, regulators, handles, hinges, and interior panels are not guaranteed.

• Specific colors may be requested but a perfect color match is not guaranteed.

• It is recommended that all body parts be repainted to match the vehicle.

• Returns are not accepted due to color discrepancies.

4. Accessories Warranty

• Accessories such as turbos, starters, air compressors, alternators, power steering pumps, optical distributors, and electrical water pumps are not included under the warranty unless purchased separately.

• Other components that may require replacement at the time of installation include:

  • Water pump, distributor cap, spark plugs, wires, and timing chain.

• QUAP is not liable for these high-wear parts.

Warranty Claim Process

1. Warranty claims must be submitted within 5 business days of identifying an issue.

2. Documentation, including proof of installation by a certified technician, must be provided.

3. QUAP will review and authorize repairs or replacements on a case-by-case basis.

4. Returns due to incorrect orders or misdiagnosis will require customers to cover freight costs for both return and replacement.

5. Any part returned under warranty must not be disassembled unless prior approval is given.

Additionally

• Warranty does not cover:

  • Labor costs, installation fees, towing, or rental car expenses.

  • Damage due to improper installation, overheating, misuse, accidents, or modifications.

  • Normal wear-and-tear components such as seals, gaskets, belts, and hoses.

  • Electronics that require programming but were not properly reset by a dealer or certified technician. 

  • The part purchased is installed in an application for which the vehicle manufacturer did not intend it. 

  • Defect or failure is caused by a towing trailer or any other vehicle unless your vehicle is equipped for this purpose as recommended by the vehicle manufacturer. 

  • Failure resulted by abuse, misuse, or improper modification. The part fails or becomes defective resulting from the vehicle being involved in a collision. 

  • The vehicle is not serviced at proper intervals, or appropriate fuel or coolant is not supplied in accordance with the vehicle manufacturer’s specifications. 

  • Failure or defect caused by theft, fire, collision, explosion, earthquake, lightning, windstorm, hail, water, freezing or flood. 

  • Heat tab centers are melted or removed.

• Extended warranty is only valid if QUAP is notified immediately after installation.

• Warranty coverage begins from the delivered date.

• Timing belts, water pump, thermostat, spark plugs, fluids and seals are routine maintenance items and should be replaced at the time of installation and at the vehicle manufacturer’s recommended service intervals.

• Quality Use Auto Parts drains all fluids from the parts that we sell. It is the customer’s responsibility to fill all part components with the appropriate fluids or lubricants. Cooling system must be filled with appropriate antifreeze.

• Warranty does not cover freight costs or similar damages.

• Quality Use Auto Parts is not responsible for any injury or damages that result from installation of purchased parts.

• The year and model of the vehicle or part printed on an invoice is within range of interchangeability. The part supplied to customer may not necessarily be the exact model and year as the part or vehicle that has been provided.

• Proper verification of operating conditions for cooling and electrical systems must be checked at time of installation of parts or products that can be affected by these systems.

Need Help?

For warranty claims, contact Quality Use Auto Parts (QUAP INC) at:
info@qualityuseautoparts.com or Call us at +1 (210) 401-0402

We are committed to providing quality used auto parts and ensuring customer satisfaction through our industry-leading warranty policy.