Expert Diesel Engines
from £850 to £2,400
Rebuilt units from £850 · Common codes: YD22DD, YD22DDTi, QG18DE, QG15DE
Get quotes today from trusted UK Nissan Expert engine specialists. Compare prices on reconditioned, rebuilt and used engines - supply & fit available nationwide.
Expert Diesel Engines
from £850 to £2,400
Rebuilt units from £850 · Common codes: YD22DD, YD22DDTi, QG18DE, QG15DE
Expert Petrol Engines
from £750 to £2,100
Rebuilt units from £750 · Common codes: QG18DE, QG15DE, YD22DD, YD22DDTi
Expert Turbo Diesel Engines
from £1,100 to £2,800
Rebuilt units from £1,100 · Common codes: YD22DDTi, YD22DD, QG18DE, QG15DE

Most replacements completed within 3-5 days.
The table below shows typical UK rebuilt engine costs across Nissan Expert variants - compare failure causes, engine codes, fuel types, and price ranges to benchmark what UK drivers are paying for grey import commercial vans.


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Not sure which variant your Nissan Expert is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.

Every engine code fitted to the Nissan Expert across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.
Extracted from detailed diesel engine families across Nissan Expert variants.

YD22DD - 2.2L Diesel
Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
Compatible variants
Avg. rebuilt price
£850 - £2,100
Supply only
Technical specifications
Common failures
Not sure which engine code?
Can't find your engine code- Enter your registration number above - we'll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Nissan Expert engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

The Nissan Expert's QG petrol and YD diesel engines dominate UK grey import replacement demand. Timing chain tensioners on QG15DE, oil pump chains on QG18DE, and injector pumps on YD22DD are the most common failure points. Every rebuilt engine supplied through EngineMarket includes upgraded internal components designed to address the original failure point...
QG18DE Timing Chain & Oil Pump Chain Failure
Most affected vehicles
Nissan Expert GL, Wagon, Van Petrol (1999-2006, QG18DE)
Failure mileage range
80,000-110,000 miles
Typical failure window
Root cause
Oil pump chain stretch reduces lubrication pressure; timing chain tensioner wear causes rattling and potential valve timing drift.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Preventative Chain Service | £800 - £1,400 | £550 - £950 | Replace tensioner, guide, oil pump chain before catastrophic failure | Viable only if caught early before rattling worsens |
| Intermediate - Partial Rebuild | £1,800 - £2,800 | £1,200 - £1,900 | Replace timing components, oil pump, gaskets; machine head if needed | Restores reliability but may not address block wear |
| Full Replacement - Rebuilt Engine | £2,400 - £3,600 | £750 - £1,800 | Supply & fit rebuilt QG18DE with upgraded chains, tensioners, bench-tested | Best value for high-mileage Expert; includes 12-month warranty |
Our recommendation
On a Nissan Expert worth £2,000-£4,500, preventative chain service makes sense if caught early. Once rattling is audible, full replacement with upgraded components offers better long-term value than partial rebuilds.
Compare rebuilt QG18DE engine prices for your Nissan Expert
Every Nissan Expert engine type is available through our UK network with typical price ranges based on variant, engine code and budget.
Compare Nissan Expert engine prices with vetted UK suppliers
All engine types include a minimum 12-month unlimited mileage warranty when sourced through EngineMarket. Prices are typical UK market ranges based on historical quote data from our network and depend on exact engine code, variant, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific Nissan Expert within hours.

Every displacement fitted to the Nissan Expert is listed below, with compatible engine codes, production years and common failure points to help you identify the right replacement.
The 2.2L YD-series diesel powered most Expert commercial variants from 1999-2006, offering strong low-end torque ideal for load-carrying vans. This displacement dominates UK grey import replacement demand due to its prevalence in commercial use and known injector pump sensitivity on high-mileage units.
Engine Code(s)
YD22DD, YD22DDTi
Compatible Models (UK)
Van (1999-2006), Cargo (2003-2006), DX Diesel, GL Diesel, Wagon Diesel
Power output
Verified by registration
Common Failure Points
Injector pump calibration drift, EGR cooler clogging, turbo oil seal failure on YD22DDTi
Production Years: Check by registration
Get quotes for Nissan Expert 2.2L diesel engines
Choose your Nissan Expert engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early QG15DE petrol to the latest YD22DDTi turbo diesel.
The YD-series 2.2L diesel powered most Expert commercial variants from 1999-2006, dominating UK grey import replacement demand due to high commercial usage and known injector system sensitivity.
Common Nissan Expert Diesel Engine Families
Found In
Known For
Typical Diesel Models
The YD-series 2.2L diesel powered most Expert commercial variants from 1999-2006, dominating UK grey import replacement demand due to high commercial usage and known injector system sensitivity.
Common Nissan Expert Diesel Engine Families
Found In
Known For
Typical Diesel Models
QG-series petrol engines equipped entry and mid-spec Expert variants, offering simpler maintenance but requiring attention to timing components on high-mileage grey imports.
Common Nissan Expert Petrol Engine Families
Found In
Known For
Typical Petrol Models
Not sure which fuel type your Nissan Expert has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK Nissan Expert specialists.

This section covers all major engine changes across the Nissan Expert's UK import timeline (1999-2006), organised so commercial van owners can quickly identify their engine and compare rebuilt prices from UK specialists.
⚙Key Changes
▣Main Engines
QG15DE- 1.5L petrol (DX, Base Trim)
QG18DE- 1.8L petrol (GL, Wagon)
YD22DD- 2.2L diesel (Van, Cargo)
▰Popular Models
🔧Known For
Engine Codes Covered:
QG15DEQG18DEYD22DD