406 2.0 HDi Diesel Engines
from £850 to £2,400
Rebuilt units from £850 · Common codes: DW10TD, DW10ATED, RHY, RHW
Get quotes from trusted UK Peugeot 406 engine specialists. Compare used and reconditioned prices for 1.6L to 3.0L petrol & diesel - XU, ES9 & DW covered. Find the best value for your budget.
406 2.0 HDi Diesel Engines
from £850 to £2,400
Rebuilt units from £850 · Common codes: DW10TD, DW10ATED, RHY, RHW
406 2.0 Petrol Engines
from £750 to £1,950
Rebuilt units from £750 · Common codes: XU7JB, XU7JP, EW7J4, RFV
406 3.0 V6 Performance Engines
from £1,800 to £4,200
Rebuilt units from £1,800 · Common codes: ES9J4, XFX, XFW, XFZ

Most replacements completed within 3-5 days.
The table below shows typical UK rebuilt engine costs across Peugeot 406 variants - compare failure causes, engine codes, fuel types, and price ranges to benchmark what UK drivers are paying.


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Not sure which variant your Peugeot 406 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 Peugeot 406 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 Peugeot 406 variants.

DW8 - 1.9L Diesel
Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
Compatible variants
Avg. rebuilt price
£650 - £1,350
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 Peugeot 406 engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

The Peugeot 406's engine range spans robust diesels and affordable petrols, but two families dominate replacement enquiries: the XU7 petrol (notorious head gasket issues) and DW10 HDi diesel (turbo and injector concerns). Every rebuilt engine supplied through EngineMarket includes upgraded internal components designed to address the original failure point -...
XU7 Head Gasket Failure
Most affected vehicles
Peugeot 406 S, SR, SE, SV (1995-2000, XU7JB & XU7JP)
Failure mileage range
80,000-120,000 miles
Typical failure window
Root cause
The XU7's cylinder head design is prone to warping under heat stress; combined with ageing gaskets, coolant leaks into cylinders causing overheating and potential block damage.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Head Gasket Replacement | £850 - £1,400 | £550 - £950 | Remove cylinder head, replace gasket, skim head if needed, refill coolant | Viable only if caught early before block damage; 20k-40k mile extension |
| Intermediate - Head Rebuild | £1,400 - £2,200 | £900 - £1,500 | Full head rebuild with new valves, guides, seals; pressure test block | Better longevity (40k-60k miles) but still carries XU7 design risk |
| Full Replacement - Rebuilt XU7 Engine | £2,200 - £3,500 | £750 - £1,850 (supply) + £400-£600 fit | Complete rebuilt unit with upgraded gaskets, tested on bench; supply & fit available | Most reliable long-term solution; addresses root design weaknesses |
Our recommendation
On a Peugeot 406 worth £800-£2,500, a full rebuilt XU7 engine often represents better value than repeated head gasket repairs. We recommend replacement if the car has exceeded 100k miles or shows signs of coolant/oil mixing.
Compare rebuilt XU7JB engine prices for your Peugeot 406
Every Peugeot 406 engine type is available through our UK network with typical price ranges based on variant, engine code and budget.
Compare Peugeot 406 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 Peugeot 406 within hours.

Every displacement fitted to the Peugeot 406 is listed below, with compatible engine codes, production years and common failure notes to help you identify the right replacement.
The 1.9L non-turbo diesel powered early 406 base models and estates; a simple, robust unit favoured by high-mileage drivers for its mechanical simplicity and low running costs, though head gasket attention is needed on higher-mileage examples.
Engine Code(s)
XUD9B, DW8
Compatible Models (UK)
S, SR, ST, Estate base trims
Power output
Verified by registration
Common Failure Points
Head gasket failure on high-mileage units; injector wear; water pump leaks
Production Years: 1995-2001
Get quotes for Peugeot 406 1.9L diesel engines
Choose your Peugeot 406 engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early 1.9D non-turbo to the refined 3.0 V6.
Diesel powered the majority of UK 406 sales; the HDi range (1999-2004) dominates replacement enquiries with strong economy but turbo and injector attention needed on higher-mileage examples.
Common Peugeot 406 Diesel Engine Families
Found In
Known For
Typical Diesel Models
Diesel powered the majority of UK 406 sales; the HDi range (1999-2004) dominates replacement enquiries with strong economy but turbo and injector attention needed on higher-mileage examples.
Common Peugeot 406 Diesel Engine Families
Found In
Known For
Typical Diesel Models
Petrol variants span simple 1.8/2.0L XU7 units to refined 16v EW7 and flagship V6; XU7 head gasket failure drives most petrol replacement enquiries.
Common Peugeot 406 Petrol Engine Families
Found In
Known For
Typical Petrol Models
Not sure which fuel type your Peugeot 406 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 Peugeot 406 specialists.

This section covers all major engine changes across the Peugeot 406's 1995-2004 UK production timeline, organised so owners can quickly identify their engine and compare rebuilt engine prices from UK specialists.
⚙Key Changes
▣Main Engines
XU7JP- 1.8L petrol (S, SR base)
XU7JB- 2.0L petrol (S, SR, SE, SV)
XUD9B- 1.9L non-turbo diesel (S, SR, ST, Estate)
▰Popular Models
🔧Known For
Engine Codes Covered:
XU7JPXU7JBXUD9B