Warranty Policy

At Arthur Gonzalez JDM Engines, we stand behind the quality of our engines. This document outlines the terms, coverage, and claim procedures for our Limited Warranty.

⚠ Important: Parts Only Warranty

This warranty covers internal lubricated parts only (Block, Head, and Internals). External accessories (Sensors, Solenoids, Turbos, Alternators, etc.) are left on as a convenience but are not covered. We strictly do not cover labor costs, towing, or rental vehicles.

Warranty Coverage

Our warranty covers the engine block, cylinder head, and all internal moving parts against defects in workmanship or materials. The warranty period begins on the date of delivery.

Standard Used Engines

30-Day Start-Up Warranty

Guaranteed to start and run with good compression and no internal knocks or excessive smoke.

Refurbished Engines

90-Day Limited Warranty

Covers internal failure on engines that have been inspected and serviced by our team.

What Is Covered (Long Block Only)

The warranty applies exclusively to the following internal components:

  • Engine Block & Cylinder Head
  • Pistons, Rings, & Connecting Rods
  • Crankshaft & Bearings
  • Camshafts, Valves, & Lifters
  • Oil Pump (internal only)

What Is NOT Covered

The following items are excluded from warranty coverage:

  • Labor Costs: We do not pay for labor, diagnostics, towing, or vehicle downtime.
  • External Accessories: Alternators, Starters, A/C Compressors, Power Steering Pumps.
  • Induction/Exhaust: Turbochargers, Superchargers, Intake Manifolds, Exhaust Manifolds.
  • Electronics: Sensors, ECUs, Wiring Harnesses, Solenoids, Distributors.
  • Wear Items: Timing Belts, Water Pumps, Thermostats, Spark Plugs, Seals, Gaskets.
  • Overheating: Damage caused by cooling system failure (melted tabs/pistons).

Mandatory Installation Requirements

Failure to perform these steps voids your warranty. You must retain receipts for the following parts/services as proof of proper installation:

  1. Replace Timing Components: New Timing Belt/Chain, Tensioner, and Water Pump must be installed.
  2. Replace Cooling Parts: A new Thermostat and fresh Coolant are required. Radiator must be flow-tested.
  3. New Gaskets & Seals: Front/Rear Main Seals, Valve Cover Gaskets, and Cam Seals should be replaced.
  4. Oil Service: New Oil and Oil Filter must be installed prior to first start.
  5. Oil Priming: The oil system must be primed to ensure oil pressure before the engine runs under its own power.

Conditions That Void Warranty

Claims will be denied if inspection reveals any of the following:

  • Heat Tab Melting: Engines are equipped with heat tabs. If melted or removed, the warranty is void (indicates overheating).
  • Low Oil/Fluid: Damage caused by oil starvation or lack of coolant.
  • Improper Installation: Failure to follow the mandatory installation requirements above.
  • Modifications: Use of aftermarket forced induction (turbo/supercharger) on a naturally aspirated engine.
  • Racing/Competition: Any use of the engine for racing, drifting, or track events.

How to File a Claim

If you experience an issue, please follow these steps immediately:

  1. Stop Usage: Do not continue to drive the vehicle if you suspect engine failure.
  2. Contact Us: Call 435-701-8836 or email info@ajgonzalezjdm.com within the warranty period.
  3. Provide Documentation: You must submit:
    • Original Invoice
    • Receipts for mandatory new parts (Timing belt, water pump, fluids, etc.)
    • ASE Certified Mechanic's diagnosis report
    • Photos/Video of the issue (if applicable)

Once approved, we will provide a replacement engine. If a replacement is not available, a refund will be issued upon return of the defective unit.