Peugeot 406 Engine ReplacementCompare Prices & Save

A rebuilt Peugeot 406 engine typically costs £750-£2,400 supply-only, depending on engine code and variant. Supply & fit adds £400-£700 labour. Prices vary by condition type and supplier location.

• Rebuilt XU7 petrol: £750-£1,850 supply only
• Rebuilt DW10 HDi diesel: £850-£2,100 supply only
• Rebuilt ES9 V6: £1,800-£4,200 supply only
• Supply & fit labour typically adds £400-£700

The DW8/XUD9 1.9L non-turbo diesel is widely regarded as the most reliable Peugeot 406 engine due to its simple mechanical design and tolerance for high mileage with basic maintenance.

• DW8/XUD9: simple, robust, fewer failure points
• DW10 HDi: excellent when maintained, but turbo attention needed
• XU7 petrol: affordable but head gasket weakness is well-documented
• ES9 V6: refined but oil consumption emerges on high mileage

Yes, if your 406 is in good structural condition and has service history. A rebuilt engine costing £750-£2,400 can extend the life of a car worth £800-£4,000 by 50k+ miles with warranty coverage.

• Compare engine cost against vehicle market value
• Rebuilt engines include warranty for peace of mind
• Supply & fit options simplify the replacement process
• Consider selling privately if repair cost exceeds 50% of value

The XU7's dominant failure is head gasket failure between 80k-120k miles, caused by cylinder head warping under heat stress. Timing belt neglect and oil consumption from worn rings are secondary concerns.

• Head gasket failure is the XU7's notorious weakness
• Timing belt must be replaced at 72k miles to prevent catastrophic damage
• Oil consumption indicates worn piston rings on high-mileage units
• Regular coolant and oil changes can extend XU7 life

All Peugeot 406 DW10/DW12 HDi diesel engines use a timing belt, not chain. Replacement is recommended at 72k miles or 6 years to prevent catastrophic interference engine damage.

• DW10/DW12 HDi engines use timing belt, not chain
• Belt replacement interval: 72k miles or 6 years
• Water pump should be replaced simultaneously
• Belt failure causes valve-piston collision and engine destruction

Supply-only engine delivery typically takes 2-5 working days from UK suppliers. Supply & fit installation at a specialist garage usually requires 1-2 full working days depending on variant and garage workload.

• Supply-only: 2-5 working days delivery from UK network
• Supply & fit: 1-2 days garage installation time
• Additional time may be needed for ECU coding on HDi variants
• Book garage slots in advance during peak replacement seasons

Every rebuilt or reconditioned Peugeot 406 engine supplied through EngineMarket includes a minimum 12-month unlimited mileage warranty from UK specialists. Terms vary by supplier and condition type.

• Minimum 12-month warranty standard on rebuilt/reconditioned units
• Unlimited mileage coverage on most specialist-supplied engines
• Used engines may have shorter or limited warranty terms
• Always confirm exact warranty terms with your chosen supplier

Engine swaps in the Peugeot 406 are possible but complex and rarely cost-effective. Sticking with the original engine code ensures compatibility with ECU, wiring, mounts and emissions compliance for UK road use.

• Original engine code ensures ECU and wiring compatibility
• Engine mounts and transmission must match original specification
• Non-standard swaps may fail UK MOT emissions testing
• Specialist advice essential before attempting any engine conversion

EngineMarket connects you with 100+ vetted UK Peugeot 406 engine specialists, from breakers offering used units to specialist rebuilders supplying reconditioned and rebuilt engines with warranty coverage.

• Compare prices from breakers, rebuilders and specialist suppliers
• All suppliers vetted and rated by real Peugeot 406 owners
• Supply-only or full supply & fit options available nationwide
• Free quote comparison with no obligation to proceed

Your Peugeot 406 engine code is stamped on the engine block (visible near the gearbox bellhousing) and listed on your V5C registration document under "engine number" or "variant". Enter your reg above for instant verification.

• Check V5C registration document for engine number reference
• Engine code stamped on block near gearbox bellhousing
• Common codes: XU7JB (2.0 petrol), DW10TD (2.0 HDi), ES9J4 (3.0 V6)
• Use our free reg checker for instant code and variant identification