Our Thomas Promise

Engine

PARTS & LABOR ONLY WARRANTY

90 Day Warranty from date of purchase


Labor

  • Covered up to $750 for removal, installation of diesel engines


Covered Components

  • Cylinder Head
  • Pistons
  • Rods
  • Liners
  • Rocker Assembly
  • Heads
  • Injectors
  • Oil Pump
  • High Pressure Fuel Pump
  • Turbo

Non-Covered Components

  • Engine Accessories
  • Engine Brakes
  • A/C Compressor
  • Alternator, Starter
  • Wiring Harnesses

Disclaimer

All warranty claims must be submitted and reviewed by Thomas Truck Parts and may be denied at their sole discretion.

What Is Not Covered

  • Normal Wear
  • Improper Maintenance
  • Faulty Installation

CORE CHARGE

2015+ Engines: $4,000
2015 Older Engines: $2,000

  • Must be received within 30 days of purchase
  • Buyer is responsible for return shipping

Engine

  • Must not have a hole in the block
  • Engine must turn 360 (Engine must turn by hand)
  • Engine Core is considered the following components, Long Block, Valve Cover, Oil Pain, Turbo
  • Possible Scenarios where engine core will not apply: Hole in Block, Locked Up

FAQ Section

Engine Failure
   - Water in Oil
Head Gasket
Cracked Liner
Cracked Coolant Jacket
Solution: Resurface head, replace head gasket, overhaul

   - Coolant in Oil
   Faulty Injector Cups
   Damage Cylinder Heads
   Solution: pressure test to check for lease, repair

   - Bearings
   Metal Flakes in Oil
   Rod Bearings, Main Bearings
   Cause: Age, Poor Maintenance
   Solution: Replace Bearings

   - Combustion in Coolant Reservoir
   Soot in Coolant, Brown or Black
   Reservoir being pressurized
   Cause: Faulty air compressor
   Busted head gasket on coolant jacket side

   - Excessive Blowby
   Excessive crankcase gases from blowby tube
   Excessive Oil Leaks
   Cause: Poor Maintenance, Piston ring failure allowing combustion gases into block

Transmission Warranty
90 Day Warranty

Covered Components

  • Counter Shafts (3)
  • Gears
  • XY Shifter

Non-Covered Components

  • Oil Seals, Gaskets