TTM Diesel LLC — Warranty, Returns & Terms of Sale

By paying an invoice, accepting delivery, or using any product from TTM, the buyer agrees to the terms below.

Engine Warranty (covers cylinder head, engine block, and crankshaft only)

Engine Category Warranty
Good Used — Tested & Inspected 30 days
Reconditioned / Bearing & Sealed 3 months
Remanufactured / Long Block 12 months

Warranty runs from invoice date and is non-transferable. It covers only the head, block, and crank; all other engine components are excluded unless written on the invoice. Remedy at TTM's sole discretion: replacement of the failed covered part or the complete engine — no cash refunds.

New components: 12-month warranty unless otherwise written. Used non-engine components: functional on arrival only — TTM will replace an inoperable unit within 30 days of invoice; after 30 days, sold AS-IS with no warranty.

What Is Not Covered

Labor, diagnostic time, R&I, teardown, towing, freight, storage. Consequential, incidental, or punitive damages of any kind — including downtime, lost revenue, rental equipment, driver costs, lost loads, or customer chargebacks. Damage from improper install, inadequate cooling, fuel contamination, over-fueling, over-speeding, overheating, low oil or coolant, skipped break-in, or non-OEM fluids. Damage caused by an uncovered component (injector, turbo, oil cooler, ECM, sensors, etc.) that destroys a covered part. Engines not installed by a qualified diesel technician, or modified / tuned by the buyer.

Claim Process (must be followed — failure voids coverage)

  1. Notify TTM within 72 hours of detecting an issue: 832-894-3609 or sales@ttmdiesel.com
  2. Provide engine serial number, invoice number, failure photos, diagnostic data, and oil sample if requested.
  3. Do not disassemble or tear down the engine until TTM authorizes in writing — unauthorized teardown voids warranty in full.
  4. TTM may inspect on-site or at TTM's shop before approving any remedy. Freight to TTM is buyer's expense; reimbursed if TTM confirms a covered defect.

Returns & Cores

Returns accepted within 30 days of invoice. 20% restocking fee on any return not caused by documented TTM error. $150 restocking fee on ECM returns. Items must be in original condition, in TTM packaging, with original invoice. Non-returnable: special-order, custom-built, painted, engraved, machine-shop-modified, energized electrical parts, or any item installed or attempted to be installed.

Cores: return within 30 days of invoice, drainable, not cracked or welded, all mounting surfaces intact. Damaged, wrong, or late cores forfeit credit in part or full at TTM's discretion. Core freight is buyer's expense. Returned-check / NSF fee: $39 per incident.

Title, Risk of Loss & Liability

Title passes on full payment. Risk of loss passes to buyer on delivery to buyer or buyer's chosen carrier. Freight-damage claims are buyer's to file with the carrier. To the maximum extent permitted by law, TTM's total liability for any claim shall not exceed the amount paid by the buyer for the product giving rise to the claim.

Governing Law

Governed by Texas law; disputes resolved exclusively in state or federal courts in Harris County, Texas. No modification of these terms binds TTM unless signed in writing by a TTM officer.

Questions about a warranty claim? Call us at 832-894-3609 — we would rather solve it on the phone than in paperwork.