Reconditioned Diesel Engines for Sale — Nationwide UK Supply
Professional diesel engine reconditioning at a fraction of new engine cost. Full stripdown, precision rebuild, pressure tested, and supplied with a 12-month warranty — delivered anywhere in the UK.
When a diesel engine reaches the end of its serviceable life, replacement doesn't have to mean buying new. Reconditioned diesel engines offer the same reliability and performance as new units at typically 40–60% of the cost — and at Commercial Engines, every unit we supply has been stripped, inspected, and rebuilt by experienced diesel engineers before it leaves our workshop.
We hold stock of reconditioned engines covering commercial vehicles, agricultural machinery, marine applications, plant and construction equipment, and industrial power generation. Whether you're a fleet operator needing a quick turnaround on an HGV engine, or a marine business needing a reliable inboard replacement, we'll confirm stock availability and give you a fixed price the same day you contact us.
Not Cleaned Up — Properly Rebuilt
A reconditioned diesel engine is not simply a cleaned-up used engine. Our reconditioning process is a full mechanical rebuild: the engine is stripped completely, every component is measured and assessed against manufacturer tolerances, and anything worn or outside specification is replaced.
The block is cleaned, bores inspected and honed where required, and critical clearances are set to spec. The finished engine is pressure tested and run before being prepared for despatch. What you receive is mechanically equivalent to a new unit — at a fraction of the price.
- Complete stripdown and component inspection
- Bores honed or sleeved where required
- New pistons, rings, bearings, seals, and gaskets
- Cylinder head pressure tested and rebuilt
Reconditioned Engines for Every Application
Our range covers the full breadth of commercial diesel engine applications. Fleet operators come to us for reconditioned HGV engines when downtime is costing them hundreds per day; agricultural businesses source reconditioned tractor and combine engines during the winter servicing window; marine customers replace ageing inboard engines ahead of the cruising season.
- Commercial vehicles: HGV, LCV, bus, and coach engines
- Agricultural: tractor, combine harvester, and irrigation engines
- Marine: inboard propulsion and auxiliary engines
- Plant and construction: excavator, dumper, telehandler, and roller engines
- Industrial: manufacturing, pumping station, and factory engines
- Power generation: standby and prime power generator engines
Written Warranty. Fixed Price. Fast Delivery.
Every reconditioned engine we supply comes with a minimum 12-month parts and labour warranty — issued in writing, in plain English, with every engine despatched. We stand behind our reconditioning work, and our warranty is structured to reflect that rather than simply look good on paper.
On stocked units, same-day despatch is available for orders placed before 12pm, with next-day delivery across the UK as standard. We never give vague answers on timings — you'll have a precise despatch date when you enquire.
- 12-month parts & labour warranty in writing
- Same-day despatch on stocked units before 12pm
- Next-day UK-wide delivery as standard
Reconditioned vs Remanufactured — What's the Difference?
Both terms refer to rebuilt engines, but there is a technical distinction. A reconditioned engine is rebuilt to restore it to full working specification — worn parts are replaced, clearances restored, and the engine is tested before despatch. A remanufactured engine is rebuilt to OEM standards, with all components either new or restored to new tolerances. For most commercial applications, a quality reconditioned engine from a specialist like Commercial Engines represents the best value.
New, Reconditioned & Used — Which Is Right for You?
The wrong choice costs time or money you don't have. Here's an honest comparison.
| Condition | Typical Cost | Warranty | Lead Time | Best For |
|---|---|---|---|---|
| New | Highest | OEM warranty | Variable (sourced) | Zero-compromise replacement |
| Reconditioned | Mid-range | 12 months parts & labour | 2–5 working days | Working engine, proven spec |
| Used | Lowest | 3 months | From stock | Budget-first, non-critical |
*Every engine leaves us with a documented inspection record and written warranty terms — whatever condition class you choose.
Engine Brands We Supply
We stock and supply engines from the world's leading diesel manufacturers. Call with a make, model, or engine code and we'll confirm availability and give you a fixed price.
Cummins
4BT (3.9L), 6BT (5.9L), ISBe 4.5 & 6.7 for DAF, Mercedes, and Iveco. QSB & QSL for marine and generator applications.
Perkins
1000 Series (1004/1006) and 1100 Series (1104/1106) for agricultural, construction, and industrial plant.
Caterpillar
C7 (7.2L), C9 (8.8L), C13 (12.5L), C15 (15.2L) across the full commercial heavy-duty range.
Volvo / DAF
D7E, D9B, D13 units for Volvo FH/FM and DAF XF/CF commercial vehicles.
MAN / Scania
D0836, D2066 for MAN TGA/TGX; DC9, DC13, DC16 for Scania R and P series.
Mercedes-Benz
OM906, OM926, OM936, OM457 for Actros, Atego, and Axor commercial vehicle range.
Applications & Use Cases
Wherever a diesel engine is critical to operations — on the road, on the water, in the field, or in a plant room — we have the right engine for the job.
Commercial Fleet & HGV
Emergency supply for fleet operators — reconditioned HGV engines when every hour of downtime costs money.
Marine & Canal Boats
Inboard replacements for commercial fishing vessels, workboats, narrowboats, and leisure craft.
Agricultural Machinery
Reconditioned tractor and combine engines for harvest-season turnarounds when time is tight.
Construction Plant
CAT, Perkins, and Cummins units for excavators, dumpers, and plant equipment.
Power Generation
Standby and prime power engines for generator sets — tested and supplied to spec.
Industrial Applications
Fixed plant, pumps, compressors, and industrial machinery across all sectors.
We had a DAF LF off the road and needed a Cummins ISBe 6.7 at short notice. Commercial Engines confirmed the engine, gave us a fixed price within an hour, and it arrived in 2 days. It's been running without issue since.