
Range Rover P400 Engine Rebuild - From £3,200
Specialist Range Rover P400 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 AJ300P Specialists
Your Range Rover P400 Engine

Vehicle
Range Rover P400
Model
Range Rover
Variant
Range Rover P400
Fuel
Petrol MHEV
Engine
AJ300P
Capacity
3.0L I6
Generations
L460 (2022-present)
Rebuild From
£3,200
Not sure which engine you have?
The Range Rover P400 uses the AJ300P 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
Range Rover P400 Engine Rebuild Price
Starting From £3,200

Engine Code
AJ300PRebuild From
£3,200

Generation
L460 (2022-present)
Exact price depends on condition and parts required - submit your reg for a fixed-price quote.
Range Rover P400 Known Issues by Engine
If your Range Rover P400 has the AJ300P (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 AJ300P rebuild.
Source: established specialist consensus, l663.guide specialist buying guide, what-breaks.com. This applies to L663 Defenders only - not to classic Defender models

Range Rover P400 ENGINE OPTIONS
Every Range Rover P400 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 AJ300P and talk you through the best solution for your Range Rover P400, honestly.
Ask About Your OptionsOUR WORKSHOP
01RECOVERY COLLECTION

02AJ300P 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 Range Rover P400 rebuild looks like.
Range Rover P400 ENGINE REBUILD PROCESS
WE COVER YOUR EXACT VEHICLE
Enter your registration below and we'll confirm your Range Rover P400 has the AJ300P, along with an exact rebuild price.
WHY LAND ROVER Range Rover P400 OWNERS CHOOSE US
Engine matched using VIN or registration number - confirms your AJ300P 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
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.

Range Rover P400
RECOVERY

Range Rover P400
DIAGNOSTICS

Range Rover P400
STRIPPED ENGINE

Range Rover P400
TIMING CHAIN REPLACEMENT

Range Rover P400
IN FOR REBUILD

Range Rover P400
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 Range Rover P400 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 Range Rover P400 ENGINE

The Range Rover P400 uses the AJ300P - a 3.0-litre inline-six petrol mild-hybrid engine. It was introduced with the L460 generation from 2022 and remains in production. The AJ300P is part of JLR's Ingenium engine family and represents a more modern design than the older TDV6/SDV6 diesel units that preceded it in the Range Rover line-up. The P400 badge denotes the power output tier within the petrol range.
We continue to rebuild and replace AJ300P engines for every Range Rover P400 on the road.
Range Rover P400 ENGINE CODES
The Range Rover P400 uses the AJ300P - a 3.0-litre inline-six petrol mild-hybrid engine. It was introduced with the L460 generation from 2022 and remains in production. The AJ300P is part of JLR's Ingenium engine family and represents a more modern design than the older TDV6/SDV6 diesel units that preceded it in the Range Rover line-up. The P400 badge denotes the power output tier within the petrol range.
Check Your AJ300P Range Rover P400Range Rover P400 ENGINE COMPATIBILITY

Because the Range Rover P400 uses a specific engine code (AJ300P) within the broader Ingenium family, fitting the wrong replacement or assuming parts compatibility with other variants risks a problem that's expensive to unpick. Before we quote or supply anything, we confirm:
Your exact engine code (AJ300P) 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.
Range Rover P400 APPLICATIONS BY GENERATION
Range Rover P400 ENGINES BY YEAR
Range Rover P400 has used the AJ300P throughout. If you're unsure of your exact spec, we'll confirm it before you book.
The AJ300P has been fitted to every Range Rover P400 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 Range Rover P400 MODEL YEAR:
Range Rover P400
2022 Engine Rebuild
Range Rover P400
2023 Engine Rebuild
Range Rover P400
2024 Engine Rebuild
Range Rover P400
2025 Engine Rebuild
Range Rover P400
2026 Engine Rebuild
If your registration year or model isn't listed above, get in touch - we'll confirm availability directly against your reg.
Range Rover P400 ENGINE COSTS
A Range Rover P400 engine rebuild starts from
£3,200
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 Range Rover P400 ENGINE SIZES
• Range Rover P400 3.0 Litre Engine (AJ300P, I6)
LAND ROVER Range Rover P400 FUEL TYPES
• Range Rover P400 Petrol Mild Hybrid Engine Rebuilds
Related Range Rover Variants
Most Range Rover P400 engine rebuilds are completed within 3-5 working days.
Nationwide recovery and collection available for all Range Rover P400 models.












