Limited Parts Warranty

• This is a limited parts-only warranty.
• We do not cover:
  • Labor or installation/removal costs
  • Diagnostics
  • Towing, rental cars, lodging, or storage fees
  • Loss of income or other consequential damages
• This Warranty applies only to the original purchaser named on the invoice and is not transferable to another person or vehicle.
• Any warranty claim will be handled only with the original purchaser.
• You must contact us before removing, disassembling, or repairing any component that may be related to a potential warranty claim.
• We require original installation and maintenance receipts from an ASE-certified mechanic at a licensed repair facility for all warranty claims.

We back our used engines and transmissions with a:

This Warranty is valid only if all installation, registration, maintenance, and other requirements described in this Warranty are met.

This section applies to eligible gasoline and diesel engines sold by Thrive Auto USA.

3.1 Coverage Period

Coverage lasts until whichever occurs first:

• 60 months (5 years) from the purchase date shown on your invoice, or
• 50,000 miles from the odometer reading at the time of engine installation/registration.

3.2 Covered Internal Components

The Warranty covers internal lubricated engine components only, including:

• Pistons and piston pins
• Crankshaft and main bearings
• Connecting rods and rod bearings
• Camshaft(s) and camshaft bearings
• Intake and exhaust valves and valve springs
• Push rods, rocker arms, rocker shafts, and hydraulic lifters
• Oil pump

Cylinder block and cylinder heads are covered only if damaged by a covered internal lubricated component listed above.

Seals and gaskets are covered only when replaced as part of a repair to a covered internal component. Leaking seals and gaskets by themselves are not considered a covered failure under this Warranty.

External accessories, including alternators, starters, fuel systems, sensors, manifolds, and similar components, are not covered. See Section 9 (Exclusions).

This section applies to eligible automatic and manual transmissions sold by Thrive Auto USA.

4.1 Coverage Period

Coverage lasts until whichever occurs first:

• 60 months (5 years) from the purchase date shown on your invoice, or
• 50,000 miles from the odometer reading at the time of transmission installation/registration.

4.2 Covered Internal Transmission Components

The Warranty covers internal transmission components only, including:

• Torque converter
• Oil pump
• Governor
• Drums and planetaries
• Sun gear and shell
• Sprags
• Shafts and bearings
• Shift rails and forks
• Synchronizers

Seals and gaskets are not covered except when they must be replaced as part of a repair for a covered internal failure.

External switches, sensors, wiring, computer modules, mounts, and add-on accessories are not covered.

• All engines and transmissions are sourced from used/salvage vehicles.
• Mileage listed for each unit is verified against our inspection and documentation records prior to listing.
• Odometer readings of the donor vehicle do not legally or practically guarantee the mileage of the removed engine or transmission.
• Any mileage is provided as “correct to the best of our knowledge” but is not warranted.
• The appearance of used engines and transmissions, including rust, dirt, corrosion, and cosmetic imperfections, is not warranted.
• Cosmetic or visual differences do not constitute a defect and are not grounds for refund, return, or warranty claim.
• Thrive Auto USA sells used engines and transmissions, not complete vehicles. Odometer laws that apply to complete vehicles do not apply to engines or transmissions sold separately.

To activate and maintain this Warranty, you must meet all requirements below.

6.1 Installation Timeframe

The engine or transmission must be installed and the Warranty activated within 10 business days of delivery.

6.2 Installer Qualification

Installation must be performed by an ASE-certified mechanic at a licensed automotive repair facility. DIY installations, installations by unlicensed shops, or installations performed by non-ASE mechanics void the Warranty.

6.3 Warranty Activation (Registration)

Within 10 business days of delivery, email support@thriveautousa.com with:

• Invoice number
• Vehicle VIN
• Clear photo of the odometer at the time of installation
• Shop name, address, and contact information
• Mechanic’s ASE certification details

Failure to register and provide this information within 10 business days will void all Warranty coverage.

6.4 Required Parts Replacement at Engine Installation

For engines, the installing mechanic must:

• Install a new thermostat
• Install a new timing belt, if applicable, or verify the timing chain system according to OEM guidance
• Replace critical seals and gaskets, including the rear main seal
• Replace all fluids according to manufacturer specifications
• Fully inspect, flush, and verify that the cooling system is operating properly

6.5 Required Parts Replacement at Transmission Installation

For transmissions, the installing mechanic must:

• Replace front and rear seals and axle seals, as applicable
• Install a new transmission filter kit, if applicable
• Flush and inspect the transmission cooler and cooler lines
• Replace or clean the cooler as required
• Fill all fluids according to manufacturer specifications

To keep this Warranty valid, you must:

• Perform an initial oil and filter change at 1,000 miles after installation, then follow the vehicle manufacturer's recommended maintenance schedule.
• Perform all oil changes, fluid services, and required maintenance at a commercial service facility. DIY maintenance is not accepted.
• Maintain proper engine oil, coolant, and transmission fluid levels at all times.
• Ensure oil pressure and temperature gauges/lights, and speedometer/odometer are functional.
• Keep printed, dated, itemized receipts showing:
  • Vehicle VIN
  • Date and mileage
  • Services performed
  • Shop name, address, and contact information
  • Proof of payment

Handwritten notes or self-kept logs are not acceptable. Failure to provide valid service records when submitting a claim may void the Warranty.

This Warranty is void if any of the following occur:

• Improper installation or installation by a non-ASE or unlicensed mechanic
• Engine or transmission used for racing, competition, abuse, or other improper use
• Overheating, running low or dry on oil, or operation without proper lubrication or cooling, including melted or missing heat tabs
• Failure to install and activate the Warranty within 10 business days of delivery
• Failure to perform required installation procedures, including thermostat, timing belt, seals, cooling system, cooler flush, or other required procedures
• Failure to maintain proper fluid levels or ignoring warning lights or gauges
• Continued operation of the vehicle after a serious issue is detected
• Disassembly of the engine or transmission without prior written authorization from Thrive Auto USA
• Lack of valid installation and maintenance receipts from a qualified shop
• Tampering with or removal of heat tabs
• Use of the engine or transmission in a different application, including custom swaps or non-OEM vehicles, without written approval from Thrive Auto USA

This Warranty does not cover, including but not limited to:

• Labor, installation, or removal costs
• Diagnostics or troubleshooting costs
• Towing, rental cars, lodging, loss of income, storage fees, or incidental or consequential damages

External Accessories and Bolt-On Parts

The following components are not covered:

Other Exclusions

• Leaking seals and gaskets not associated with a covered internal failure
• Wear items and components requiring regular replacement under normal maintenance
• Failures caused by abuse, negligence, misuse, freezing, overheating, lack of lubrication, contaminated or improper fluids, improper towing, or off-road/racing use
• Engines or transmissions used commercially where commercial use was not declared and applicable surcharges were not paid
• Any component not specifically listed as covered in this Warranty
• Any pre-existing issue or failure that occurred before the Warranty was activated

If you suspect a Warranty-covered failure, follow these steps:

Thrive Auto USA will review the claim and, at our sole discretion, may provide a replacement engine or transmission of like kind and quality, or refund the purchase price or wholesale replacement value of the covered part.

If a replacement is approved, the defective unit must be returned complete and assembled, in the same configuration as delivered. Unless Thrive Auto USA states otherwise in writing, the customer is responsible for return shipping costs.

Thrive Auto USA’s liability under this Warranty is strictly limited to:

• Providing a replacement part of like kind and quality, or
• Refunding the purchase price or wholesale replacement value of the covered part, at our discretion.

We do not assume any liability for labor or installation/removal costs, loss of vehicle use, loss of income or profits, rental vehicles, towing, or storage fees, damage to other parts, systems, or property, or incidental, consequential, or indirect damages.

This Warranty and any dispute arising from it are governed by the laws of the State of California.

Any litigation or claim relating to this Warranty or any product sold by Thrive Auto USA must be filed and resolved exclusively in the appropriate state or federal court located in Saline County, California.

By purchasing from Thrive Auto USA, you consent to the exclusive jurisdiction and venue of these courts.

By purchasing and/or installing a part from Thrive Auto USA, you:

• Acknowledge that you have read, understood, and agreed to this Limited Parts Warranty.
• Understand that this is a parts-only Warranty with strict installation, registration, and maintenance requirements.
• Accept that no employee, agent, or representative of Thrive Auto USA may waive or modify these terms unless such modifications are in writing and signed by an authorized officer of Thrive Auto USA.