
Land Rover Defender P525 Engine Rebuild - From £4,500
Specialist Land Rover Defender P525 engine rebuilds and replacements, with registration-based engine matching, nationwide recovery and a 12-month unlimited-mileage warranty
Rated Land Rover Engine Specialists - 1,800+ Engines Rebuilt
Specialist technicians with 10-15 years of experience
12 Month Unlimited-Mileage Warranty
Nationwide Recovery
Free Engine Matching by Registration
Ingenium AJ133 Specialists
Your Land Rover Defender P525 Engine

Vehicle
Land Rover Defender P525
Model
Defender
Variant
Defender P525
Fuel
Petrol Supercharged
Engine
AJ133
Capacity
5.0L V8
Generations
L663 90 (2021-present) · L663 110 (US market, 2026)
Rebuild From
£4,500
Not sure which engine you have?
The Defender P525 uses the AJ133 3.0-litre inline-six mild-hybrid engine - enter your registration below and we'll confirm your exact spec before you get a quote.
DVLA & VIN verified
100% secure & private
No obligation quote
Land Rover Defender P525 Engine Rebuild Price
Starting From £4,500

Engine Code
AJ133Rebuild From
£4,500

Generation
L663 90 (2021-present) · L663 110 (US market, 2026)
Exact price depends on condition and parts required - submit your reg for a fixed-price quote.
Land Rover Defender P525 Known Issues by Engine
If your Defender P525 has the AJ133 (L663 generation):
Timing chain wear - Ingenium diesel engines share a well-documented timing chain pattern. We replace timing chains, guides and tensioners as standard on every AJ133 rebuild.
Source: established specialist consensus, l663.guide specialist buying guide, what-breaks.com. This applies to L663 Defenders only - not to classic Defender models

Land Rover Defender P525 ENGINE OPTIONS
Every Defender P525 is different. That's why we offer the right solution for your engine, your car and your budget.
NOT SURE WHICH OPTION IS RIGHT FOR YOU?
Enter your registration below and we'll confirm your AJ133 and talk you through the best solution for your Defender P525, honestly.
Ask About Your OptionsOUR WORKSHOP
01RECOVERY COLLECTION

02AJ133 ENGINE STRIPPED FOR REBUILD INSPECTION

03VALVE COVERS & COOLANT COMPONENT WORK
04TECHNICIANS AT WORK
05ENGINE TESTING (RIG)
06COMPLETED & READY FOR REFIT
Real photos from our workshop - not stock imagery. This is what a genuine Land Rover Defender P525 rebuild looks like.
Land Rover Defender P525 ENGINE REBUILD PROCESS
WE COVER YOUR EXACT VEHICLE
Enter your registration below and we'll confirm your Land Rover Defender P525 has the AJ133, along with an exact rebuild price.
WHY LAND ROVER Defender P525 OWNERS CHOOSE US
Engine matched using VIN or registration number - confirms AJ133 before you're quoted
Genuine specialist workshop - not a broker
Specialist technicians with 10-15 years of experience
We don't swap your engine for an unknown used unit
Nationwide recovery, workshop rebuild
12 month unlimited-mileage warranty
All engine ancillaries serviced as part of the rebuild
Trade & public enquiries welcome
Dedicated advisor from quote to fit
No widely-reported engine issue for this variant - we still recommend a full inspection before any long journey.
OUR MOST RECENT LAND ROVER RECOVERIES & REBUILDS
Real vehicles brought into our workshop. Open bonnets, stripped blocks, and cars ready for collection - this is what genuine engine work looks like.

Land Rover Defender P525
RECOVERY

Land Rover Defender P525
DIAGNOSTICS

Land Rover Defender P525
STRIPPED ENGINE

Land Rover Defender P525
TIMING CHAIN REPLACEMENT

Land Rover Defender P525
IN FOR REBUILD

Land Rover Defender P525
REBUILD IN PROGRESS
HOW IT WORKS
SEND YOURREGISTRATION
RECEIVE YOURFIXED-PRICE QUOTE
WE RECOVERYOUR CAR
REBUILD &REFIT
Most Defender models are recovered within a few hours of booking. Most rebuilds are completed within 3-5 working days.
Workshop slots fill up fast - book your recovery today.
LOOKING FOR A USED OR REPLACEMENT ENGINE INSTEAD?
We supply low-mileage, VIN-matched used units too, and offer full replacement and fitting. However, most Defender P525 owners choose a rebuild once they realise it removes compatibility risk and works out more cost-effective over the life of the car. Enter your reg below and we'll show you every option, honestly.
ABOUT THE Land Rover Defender P525 ENGINE

The Defender P525 is part of the modern L663 generation, introduced in 2021 for the 90 and later offered in the US-market 110 from 2026. It uses the AJ133 - a 5.0-litre supercharged V8 that Land Rover has applied across several performance-oriented models, including the Range Rover Sport SVR and Velar SVAutobiography. The P525 badge denotes a specific power tune of this engine, rather than a mechanically unique unit. No Defender-specific known issue is confirmed for this application - it's generally considered a reliable engine in this chassis, though like any performance V8, regular maintenance is still critical.
We continue to rebuild and replace AJ133 engines for every Defender P525 on the road.
Land Rover Defender P525 ENGINE CODES
A 5.0-litre supercharged V8 fitted to the Defender P525 from 2021 (90) and 2026 (US-market 110). The P525 badge reflects the power output tune of this engine. While the AJ133 is generally reliable and shares the broader supercharged V8 pattern used across other Land Rover models, no Defender-specific issue is confirmed for this application. We replace timing chains, bearings, water pump and gaskets as standard on every P525 rebuild.
Check Your AJ133 Defender P525Land Rover Defender P525 ENGINE COMPATIBILITY

Because the P525 is one of several power-tune badges on the same AJ133 engine, it's important to confirm the exact tune and specification when sourcing any replacement parts or a full replacement unit. Before we quote or supply anything, we confirm: - Your exact engine code (AJ133) via registration or VIN - Your body style (90 or 110) - Year of manufacture - Any electronics or ECU considerations specific to your exact build
Your exact engine code (AJ133) via registration or VIN
Your generation (L663)
Drivetrain and ancillary specification
Whether your build falls in the early production period (2019-2020) for injector fault coverage
This is why we always start with your registration rather than a generic Defender quote - it protects you from paying for parts that don't fit your actual car.
Land Rover Defender P525 APPLICATIONS BY GENERATION
Land Rover Defender P525 ENGINES BY YEAR
Land Rover Defender P525 has used the AJ133 throughout. If you're unsure of your exact spec, we'll confirm it before you book.
The AJ133 has been fitted to every Defender P525 since launch - if your registration year isn't listed above, get in touch and we'll confirm availability directly against your reg.
WE COVER EVERY Land Rover Defender P525 MODEL YEAR:
Land Rover Defender P525
2021 Engine Rebuild
Land Rover Defender P525
2022 Engine Rebuild
Land Rover Defender P525
2023 Engine Rebuild
Land Rover Defender P525
2024 Engine Rebuild
Land Rover Defender P525
2025 Engine Rebuild
Land Rover Defender P525
2026 Engine Rebuild
If your registration year or model isn't listed above, get in touch - we'll confirm availability directly against your reg.
Land Rover Defender P525 ENGINE COSTS
A Land Rover Defender P525 engine rebuild starts from
£4,500
A full replacement engine and fitting service is also available. Exact pricing depends on the condition of your existing engine and the parts required - submit your registration for a fixed-price quote within 30 minutes.

12 MONTH
UNLIMITED-MILEAGE
WARRANTY
LAND ROVER Defender P525 ENGINE SIZES
• Land Rover Defender P525 3.0 Litre Engine (AJ133, I6)
LAND ROVER Defender P525 FUEL TYPES
• Land Rover Defender P525 Petrol Mild Hybrid Engine Rebuilds
Related Land Rover Defender Variants
Most Land Rover Defender P525 engine rebuilds are completed within 3-5 working days.
Nationwide recovery and collection available for all Land Rover Defender P525 models.












