Our 12-Month Parts & Labour Warranty

Last updated: 14 July 2026

Every engine we recondition or supply and fit is warranted for 12 months or 12,000 miles, whichever comes first — parts and labour included. Most engine specialists offer 6 months and cap you at 5,000 or 6,000 miles. We don’t, because we build engines we’re prepared to stand behind.

What’s covered

The complete engine assembly we built or supplied — block, cylinder head(s), and every internal component we renewed in the rebuild — plus our fitting workmanship. If our work or our parts fail within the warranty period, we put it right at our cost, including the labour to do it. Not just the part. The whole repair.

What’s not covered

We’re upfront about the limits, because a warranty you only understand after a claim isn’t worth much:

• Your original ancillaries we refitted (turbo, injectors, alternator and similar) — they’re your existing parts, and we’ll have flagged any concerns during the health check before fitting
• Routine service items: oil, filters, coolant, belts that fall due by age or mileage
• Damage from driving on after coolant loss or low oil warnings
• Accident damage, misuse, competition or track use
• Engines remapped or modified without our written agreement, where the modification caused the failure
• Recovery, hire cars and other knock-on costs

Keeping your warranty valid — just two things

1. An oil and filter change within the first 1,000 miles. A fresh engine deserves a clean start after running in.
2. Normal servicing to the manufacturer’s schedule after that — with us, or with any established professional garage you trust. Keep your dated, itemised invoices; that’s all the proof we need.

That’s it. No mandatory return visits, no daily inspection rituals, no speed limits.

If something goes wrong

Call us on 02033 180532 or 07902 539094, WhatsApp us on +44 7936 418074, or email support@deltaenginesltd.co.uk as soon as a fault appears — and stop driving if continuing could make the damage worse. We’ll inspect the vehicle at our workshop (or somewhere agreed with you), and if it’s on us, we fix it at our cost. Please don’t commission repairs elsewhere without our written agreement first, as we can’t reimburse work we never saw.

Selling the car?

The remaining warranty transfers to the new keeper — just ask us to update our records. It’s a genuine selling point when you come to move the vehicle on.