How 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.

What 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.

Is 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.

How 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.

Can 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.

Land Rover Defender 90 P525 V8 Specialists

Land Rover Defender 90 P525 V8 Engine Replacement Compare 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.

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👑 Premium V8 Specialists

Land Rover Defender 90 P525 V8 Engine

from£10,000 to £14,0...

Usedfrom £4,500
Reconditionedfrom £8,000
Common codesAJ133, 508PS

Land Rover defender-90 P525 V8 Used Engine — AJ133 / 508PS

Land Rover defender-90Used Engine — AJ133 / 508PS

Land Rover defender-90 P525 V8 Reconditioned Engine — AJ133 / 508PS

Land Rover defender-90Reconditioned Engine — AJ133 / 508PS

Land Rover defender-90 P525 V8 Rebuilt Engine — AJ133 / 508PS

Land Rover defender-90Rebuilt Engine — AJ133 / 508PS

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How it works

3 Simple Steps to Finding the Right Replacement Engine

Clear information first, then the right engine and specialist for your exact vehicle.

Variant History

Land 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.

2022
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.
2023
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.

Every engine fitted to the Land Rover Defender 90 P525 V8 is covered below, with UK rebuilt pricing and known failure points.

Engine Codes & Pricing

Land Rover Defender 90 P525 V8 Engine Codes Specifications & Replacement Cost

Find your exact engine code, specs and UK replacement cost guide.

AJ133 / 508PS — 5.0L Supercharged Petrol (2022-present)

Power Output: 525hp
Years Fitted: 2022-present

Can’t find your exact engine code?-> Get quotes for AJ133 / 508PS Land Rover Defender 90 P525 V8 engine replacement

-> Get quotes for AJ133 / 508PS Land Rover Defender 90 P525 V8 engine replacement

Common failure points and repair options

Coolant Crossover Pipe Leaks & Supercharger Coupler Wear

Affected: 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.

Repair options

Repair tier	Dealer price	Specialist price
Minor/Preventative	£1,500-£2,500	£900-£1,500
Full Replacement - rebuilt/reconditioned engine	£14,000-£18,000	£10,000-£14,000

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.

-> Compare rebuilt AJ133 / 508PS Land Rover Defender 90 P525 V8 engine prices

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 Land Rover Defender 90 P525 V8 Engine Replacement Prices Now ->

FAQ

Land Rover Defender 90 P525 V8 Engine ReplacementFrequently Asked Questions

Everything Land Rover Defender 90 P525 V8 owners usually ask before choosing a rebuilt, reconditioned or used replacement engine.

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.

-> Compare Land Rover Defender 90 P525 V8 engine replacement prices

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.

-> Check Land Rover Defender 90 P525 V8 rebuild viability

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.

-> Get quotes for a compatible Land Rover Defender 90 P525 V8 engine

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Comparing quotes is completely free and carries no obligation. By entering your registration, you ensure that every quote you receive is precisely matched to your Land Rover Defender 90 P525 V8 and its specific 5.0L SC V8 engine code, connecting you directly with vetted UK premium Land Rover specialists.

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