One price, one invoice, one warranty, and nobody to blame but the company that supplied the parts and turned the spanners. Whether you choose a used Nissan Engine or a reconditioned unit, that is the difference between buying an engine and buying a repaired Navara.
| Route | Fitted price | Cover | Best for |
| Used Navara engine, supplied and fitted | £2,400–£3,600 | 30–90 days | Older Navaras, quick turnaround |
| Reconditioned Navara engine, supplied and fitted | £3,800–£5,400 | 12 months written | Trucks you are keeping |
| Short engine supplied and fitted | £3,000–£4,400 | Varies | Sound ancillaries |
| Rebuild of your own unit | £3,200–£4,800 | Varies | Matching-numbers trucks |
| Model | Years | Code | Notes |
| Navara D40 2.5 dCi | 2005–2015 | YD25 | Chain and injector faults |
| Navara NP300 2.3 dCi | 2015–2020 | YS23DDT | Single turbo |
| Navara NP300 2.3 dCi twin turbo | 2015–2020 | YS23DDTT | Twin turbo, more complex |
| Navara 2.3 dCi later builds | 2020 onward | YS23 family revisions | Confirm against REG |
Fitment must be confirmed against your REG and the Nissan parts catalogue. A single-turbo truck cannot take a twin-turbo engine without matching the ancillaries and software.
Because the person who supplies the engine is also the person who has to make it work. When the engine comes from one company and the fitting from another, a failure turns into an argument. This matters especially with a reconditioned Nissan Navara Engine, where both the unit and the installation should sit under one warranty. In practice, the single-invoice route costs about the same and removes that risk entirely.
A used Engine that is in stock can usually be supplied and fitted within two to five working days, while a reconditioned unit normally takes one to three weeks. Navara’s are working vehicles, so ask for the lead time in writing before you pay a deposit.
On a truck with a sound chassis and gearbox, yes. Insist on a compression test, a mileage record and a written warranty.
£3,800–£5,400 supplied and fitted with a 12-month written warranty at independent rates.
Not always, but the oil feed must be checked and cleaned. A failed turbo on the old engine often means debris travelled through the system.
With a supply-and-fit warranty, yes. That is the main reason to keep both parts of the job with one company.
After a road test and a fault-code check, yes. Keep the first 500 miles gentle and check the oil weekly.
Read the code from the REG plate, the door shut sticker or the stamp on the block, then confirm it against the Nissan parts catalogue. Single-turbo and twin-turbo 2.3 dCi units look similar and are not swappable.
The cab-on, engine-out approach is standard on these trucks, with the front end dressed back and the gearbox separated. It is a full day of strip and a full day of rebuild on most Navaras.
Catching a chain rattle or a rising oil consumption early is the difference between a repair and a replacement.
A supply-and-fit warranty should cover internal mechanical failure of the engine and the labour to remove and refit it. Read the exclusions: missed servicing, overheating caused by a failed hose or radiator, and continued driving after a warning light are the usual ones.
Treat the truck as new for 500 miles. Check the oil daily for the first few days, watch for coolant movement and listen for any change in noise. Then bring it back for a check.
Usually replacement, unless the damage is contained and the truck is valuable. A rebuild of your own unit costs £3,200–£4,800 and takes two to four weeks, against £2,400–£3,600 for a supplied and fitted used engine in under a week.
Ask for the old parts, the fault-code readout and the road test notes. A workshop confident in its work answers these questions without hesitation, and the paperwork protects you if the engine fails again.
Usually yes. The old engine is returned to the supplier as a core, which reduces the price or offsets the disposal cost. Ask whether the credit is included or separate.
Fitted price, plus any injector or turbo work, plus a hire vehicle if you need one. Here is a realistic full picture on a 2017 NP300.
| Item | Typical cost |
| Used Navara engine, supplied and fitted | £2,400–£3,600 |
| Reconditioned unit, supplied and fitted | £3,800–£5,400 |
| Turbo, if required | £700–£1,300 |
| Injector set, if required | £600–£1,200 |
| Hire vehicle for a week | £250–£500 |
| Oil and filter at 500 miles | £90–£140 |
Add those together only where they apply. A clean engine swap on a healthy truck sits at the bottom of that range, not the top.
Owners who tow, cover high mileage or plan to keep the truck for more than two years are usually better suited to a reconditioned Nissan Navara engine. Its warranty is more likely to be needed over longer ownership, but it is also worth more when it is.
Buying the cheapest engine and having it fitted by a different workshop. That splits the warranty, and when something goes wrong, both parties point at each other while the truck sits still.
