Land Rover Defender 90 P525 V8 Engine ReplacementCompare Prices & Get Quotes
Get quotes today from trusted UK Land Rover Defender 90 P525 V8 engine specialists. Compare prices on reconditioned, rebuilt and used engines to find the best value for your high-performance 4x4.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
👑 Premium V8 Specialists
From £10,000 to £14,000
Used from £4,500 · Reconditioned from £8,000 · Common codes: AJ133, 508PS
From £4,500
Tested, bare/short engine
From £8,000
Rod bearings addressed, tested
From quote
Upgraded bearings, full teardown, revised valvetrain
Secure enquiry - no spam, no pressure. Genuine quotes only from vetted UK Land Rover Defender 90 P525 V8 specialists.
3 Simple Steps3 Simple Stepsto Finding the Best Land Rover Defender 90 P525 V8 Replacement Engineto Finding the Best Land Rover Defender 90 P525 V8 Replacement Engine
Most replacements completed within 3-5 days.
Variant HistoryLand Rover Defender 90 P525 V8 - Engine History & Specs at a Glance
When the P525 V8 was introduced to the Defender 90 lineup, it represented the pinnacle of modern JLR performance, pairing a 5.0-litre supercharged V8 with the iconic short-wheelbase chassis for unparalleled power-to-weight dynamics and premium refinement.
Variant HistoryLand Rover Defender 90 P525 V8 - Engine History & Specs at a Glance
When the P525 V8 was introduced to the Defender 90 lineup, it represented the pinnacle of modern JLR performance, pairing a 5.0-litre supercharged V8 with the iconic short-wheelbase chassis for unparalleled power-to-weight dynamics and premium refinement.
Land Rover Defender 90 P525 V8
Fuel TypePetrol
Engine Size Range5.0L (4999cc)
Power Output Range525hpEngine History Timeline
5.0L SC V8 (AJ133 / 508PS architecture) 525hp, launched in the L663 Defender 90, offering a high-performance, naturally aspirated-feeling alternative to the inline-six Ingenium powertrains.
Present - Continued production with exclusive special editions (e.g. 75th Edition, Carpathian Edition), maintaining the same robust 5.0L supercharged powertrain with refined thermal management and calibration.
Key Specs Snapshot
Fuel TypePetrolEngine Size Range5.0L (4999cc)Power Output Range525hpYears Produced2022-presentEvery engine fitted to the Land Rover Defender 90 P525 V8 is covered below, with UK rebuilt pricing and known failure points.
Land Rover Defender 90 P525 V8 Engine Codes - Specifications & Replacement CostLand Rover Defender 90 P525 V8 Engine Codes - Specifications & Replacement Cost
5.0L Supercharged Petrol (2022-present)
Power Output525hpYears Fitted2022-present
Compatible Trim Levels
- Defender 90 V8
- Defender 90 V8 Carpathian Edition
- Defender 90 V8 75th Edition
Find your exact engine code, specs and UK replacement cost guide.
Used
Tested, ready-to-fit engine
£4,500-£7,000
Reconditioned
Addressed known issues, tested
£8,000-£12,000
Rebuilt
Full teardown, upgraded internals
£10,000-£14,000
Common Failure
Generally robust in the L663 application, though earlier iterations of this architecture were known for coolant crossover pipe leaks and supercharger isolator coupler wear, which can cause a rattling noise at idle.
The Land Rover Defender 90 P525 V8 features a highly robust 5.0-litre supercharged engine, widely regarded as one of JLR's most durable modern powertrains. However, high-performance forced-induction units require meticulous maintenance. Rebuilt engines through EnginesMarket include upgraded components addressing original failure points, plus a minimum 12-month unlimited-mileage warranty.
Why the Land Rover Defender 90 P525 V8 AJ133 / 508PS Requires Attention
Affected Vehicles
Land Rover Defender 90 P525 V8 (AJ133 / 508PS, 2022-present)
Typical Failure Mileage
60,000-100,000+ miles (or age-related on earlier architecture)
Root Cause
Plastic coolant crossover pipes can become brittle under high under-bonnet temperatures, while the supercharger isolator coupler can wear over time, causing a distinct rattling noise at idle and potential boost inconsistencies.
Why It Happens
Plastic coolant crossover pipes can become brittle under high under-bonnet temperatures, while the supercharger isolator coupler can wear over time, causing a distinct rattling noise at idle and potential boost inconsistencies.
Dealer (parts + labour)
£1,500-£2,500
Specialist (parts + labour)
£900-£1,500
What it involves
Replace plastic coolant pipes with revised aluminium parts and update the supercharger isolator coupler.
Suitability
Highly recommended preventative maintenance to avoid catastrophic overheating.
1 - 2 daysDealer (parts + labour)
£14,000-£18,000
Specialist (parts + labour)
£10,000-£14,000
What it involves
Supply & fit, upgraded components addressing the original failure point, 12-month warranty.
Suitability
Necessary if neglect has led to severe overheating, warped heads, or deep mechanical knocking.
1 - 2 daysAll prices are indicative UK market ranges based on current UK specialist supplier data.| Repair Tier | Dealer (Parts + Labour) | Specialist (Parts + Labour) | What It Involves | Suitability | Estimated Time |
|---|---|---|---|---|---|
 Minor/Preventative Minor | £1,500-£2,500 | £900-£1,500 | Replace plastic coolant pipes with revised aluminium parts and update the supercharger isolator coupler. | Highly recommended preventative maintenance to avoid catastrophic overheating. | 1 - 2 days |
 Full Replacement - rebuilt/reconditioned engine Best Value | £14,000-£18,000 | £10,000-£14,000 | Supply & fit, upgraded components addressing the original failure point, 12-month warranty. | Necessary if neglect has led to severe overheating, warped heads, or deep mechanical knocking. | 1 - 2 days |
Vehicle Value Check
Vehicle Value Check
A typical 2022-present Land Rover Defender 90 P525 V8 is valued between £80,000 and £110,000+ [THIRD-PARTY]. At this value band, a £10,000-£14,000 rebuilt engine replacement represents a small fraction (10-15%) of the vehicle's worth, making it a financially sound investment to preserve a high-value, appreciating asset.
Our Recommendation
Our Recommendation
If the engine is fundamentally sound, addressing the coolant pipes and supercharger coupler as preventative maintenance is highly cost-effective and preserves the original unit. However, if the vehicle has suffered severe overheating or exhibits deep mechanical knocking, a full reconditioned replacement is the only reliable path to protect your investment.
Don't Let Engine Failure Write Off Your Land Rover Defender 90 P525 V8
Protect your high-performance investment with a rebuilt engine that features upgraded components and a comprehensive 12-month unlimited-mileage warranty. By comparing quotes from our vetted UK specialist network, you avoid main dealer premiums while securing nationwide supply and fit options tailored to your exact Land Rover Defender 90 P525 V8.
Compare rebuilt AJ133 / 508PS Land Rover Defender 90 P525 V8 engine prices
12-Month Minimum
UK Specialists Vetted
Best Price GuidanceImportant Information
Important Information
"All prices are indicative UK market ranges based on historical quote data and repair requests from our network of engine specialists. Dealer pricing is estimated based on published main dealer labour rates and genuine OEM parts pricing. Specialist pricing reflects actual quote data from EnginesMarket's UK network. Actual costs vary depending on damage severity, vehicle condition, variant, and workshop location within the UK. Use our free comparison tool to get tailored quotes for your specific Land Rover Defender 90 P525 V8. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier."
Land Rover Defender 90 P525 V8 Engine ReplacementFrequently Asked Questions
Question 1How much does a Land Rover Defender 90 P525 V8 engine replacement cost-
A reconditioned or rebuilt Land Rover Defender 90 P525 V8 engine typically costs between £8,000 and £14,000 for the supply-only unit, depending on the level of rebuild and specialist documentation provided.
- Rebuilt units include upgraded coolant components and supercharger coupler checks.
- Supply and fit packages are available through our premium specialist network.
Question 2What are the signs of supercharger or cooling failure in a Land Rover Defender 90 P525 V8-
Early detection is critical to preventing catastrophic damage to your Land Rover Defender 90 P525 V8 engine.
- Look for unexplained coolant loss, a distinct rattling noise from the supercharger at idle, or sudden overheating warnings.
- Sweet-smelling exhaust smoke or oil contamination are also strong indicators of internal failure.
Question 3Is it worth replacing the engine in a high-value Land Rover Defender 90 P525 V8-
Yes, given the strong retained values of the L663 V8, replacing the engine is a highly sound financial decision.
- A typical 2022+ model is valued between £80,000 and £110,000+, making a £10,000-£14,000 rebuild a small percentage of the vehicle's worth.
- A rebuilt engine with a 12-month warranty adds reliability and protects your premium asset.
Question 4How long does a Land Rover Defender 90 P525 V8 engine supply and fit take-
A straightforward supply and fit replacement for a Land Rover Defender 90 P525 V8 typically takes 3 to 5 days at a premium specialist workshop.
- This allows time for the engine to be delivered, mounted, and thoroughly calibrated and tested.
- Complex cases requiring additional cooling system upgrades may take slightly longer.
Question 5Can I upgrade my Land Rover Defender 90 to a P525 V8 engine-
While the L663 chassis was designed with V8 capability, a retrofit is not straightforward.
- The P525 V8 requires extensive ECU mapping, bespoke wiring harnesses, and upgraded cooling systems to function correctly and pass MOT.
- We strongly recommend sticking to a like-for-like replacement to ensure guaranteed compatibility, reliability, and warranty coverage.
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