

Land Rover Defender P500Engine Rebuild— From £4,500
Specialist Land Rover Defender P500 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
AJ133 Supercharged V8 Specialists

Your Land Rover Defender P500 Engine

Vehicle
Land Rover Defender P500
Model
Defender
Variant
P500
Fuel
Petrol Supercharged
Engine
AJ133
Capacity
5.0L V8
Generations
L663 (2024–2025)
Rebuild From
£4,500
Not sure which engine you have?
The Defender P500 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 P500Engine Rebuild Price
Starting From £4,500

Engine Code
AJ133Rebuild From
£4,500

Generation
Exact price depends on condition and parts required — submit your reg for a fixed-price quote.
Land Rover Defender P500 Oil Leaks & Coolant System Wear (AJ133 I6)
The AJ133 is a sophisticated 3.0-litre inline-six with an integrated starter-generator and electric auxiliary compressor — a more modern and efficient design than the older AJ133 V6. We replace timing chains, bearings, water pump and gaskets as standard on every AJ133 rebuild.
Because the Defender P500 uses a completely different engine family from the V8 M178 fitted to the Defender 63 and GT 63 S, parts and rebuild specifications don't cross over between them.
Source: Established AJ133 specialist pattern — timing chain, bearing and gasket wear across integrated-starter-generator inline-six units.

Land Rover Defender P500ENGINE OPTIONS
Every Defender P500 is different. That's why we offer the right solution for your engine, your car and your budget.
REBUILDING YOUR DEFENDER P500 ENGINE
Most engine suppliers sell you a used engine of unknown history and hope it matches. We rebuild the engine your Defender P500 already has instead — strip it down, pressure-test it, and replace every worn or damaged component (timing chains, bearings, water pump, gaskets) with updated OEM parts. You get a near-new engine with a 12-month unlimited-mileage warranty, without the compatibility risk of an unknown used unit. This is the option most Defender P500 owners choose, and it's the one we'd recommend for most situations.
RECONDITIONED DEFENDER P500 ENGINES
"Reconditioned" is the term many owners search for when they mean the same thing as a rebuild — a full strip-down, inspection, and replacement of worn parts rather than a straight swap. If that's what you're after, our rebuild service is exactly that.
REFURBISHED DEFENDER P500 ENGINES
Similarly, "refurbished" often describes the same process from a different angle — restoring your existing engine to full working condition rather than replacing it outright. Our rebuild covers this.
REMANUFACTURED DEFENDER P500 ENGINES
Some owners specifically search for a "remanufactured" engine, expecting a unit rebuilt to original specification with updated components. That's consistent with what our rebuild service delivers on the AJ133.
REPLACEMENT DEFENDER P500 ENGINES
If your existing engine is beyond economical repair, we also offer full engine replacement and fitting — sourced and fitted by our team, with the same 12-month warranty.
USED DEFENDER P500 ENGINES
In some cases, a matched low-mileage used engine is the right call — particularly if you need your vehicle back on the road quickly and your existing engine's damage is extensive. We can source and fit these too, though most owners who ask about used engines end up choosing a rebuild once they understand the compatibility risk a used unit carries. Enter your reg below and we'll talk you through both options honestly.
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 P500, 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 P500 rebuild looks like.
Land Rover Defender P500 ENGINE REBUILD PROCESS
WHAT MERCEDES Defender P500 OWNERS SAY
WE COVER YOUREXACT VEHICLE
Enter your registration below and we'll confirm your Land Rover Defender P500 has the AJ133, along with an exact rebuild price.
WHY MERCEDES Defender P500 OWNERS CHOOSE US
Engine matched using VIN or registration number
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 RECENTMERCEDES 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 P500
RECOVERY

Land Rover Defender P500
DIAGNOSTICS

Land Rover Defender P500
STRIPPED ENGINE

Land Rover Defender P500
TIMING CHAIN REPLACEMENT

Land Rover Defender P500
IN FOR REBUILD

Land Rover Defender P500
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 ORREPLACEMENT ENGINEINSTEAD?
We supply low-mileage, VIN-matched used units too, and offer full replacement and fitting. However, most Defender P500 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 — we'll show you every option, honestly.
ABOUT THE Land Rover Defender P500 ENGINE

The Defender P500 uses the AJ133 — a 5.0-litre supercharged V8, fitted across the L663 generation from 2024 to 2025. This is the same engine family used in high-performance Land Rover and Range Rover models, including the Range Rover Sport SVR and Velar SVAutobiography. The P500 badge tracks a specific power tune of this engine, but it's the same AJ133 unit as the P425 and P525 variants — the badge denotes the output level rather than a different engine.
We continue to rebuild and replace AJ133 engines for every Defender P500 on the road.
Land Rover Defender P500 ENGINE CODES
A 5.0-litre supercharged V8 fitted to the Defender P500 from 2024 to 2025 (L663 generation). The AJ133 is generally reliable in this application, sharing the broader supercharged AJ-V8 pattern used across the Range Rover Sport SVR and Velar SVAutobiography. No Defender-specific issue has been confirmed for this engine. Check Your AJ133 Defender P500 → [link to quote form]
Check Your AJ133 Defender P500Land Rover Defender P500 ENGINE COMPATIBILITY

The AJ133 supercharged V8 was fitted to the Defender as a limited-run performance option between 2024 and 2025. Because it's the same engine family used in other Land Rover models, it's essential to match your specific vehicle's VIN before sourcing or fitting any components — the ECU calibration, ancillaries and cooling system setup can vary between applications. We always start with your registration to confirm your exact spec before quoting anything.
Your exact engine code (AJ133) via registration or VIN
Your generation (generation)
Drivetrain and ancillary specification
Any electronics or ECU considerations specific to your exact build
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 P500 APPLICATIONS BY GENERATION
Land Rover Defender P500 ENGINES BY YEAR
Land Rover Defender P500 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 P500 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 P500 MODEL YEAR:
Land Rover Defender P500
2024 Engine Rebuild
Land Rover Defender P500
2025 Engine Rebuild
If your registration year isn't listed above, get in touch — we'll confirm availability directly against your reg.
Land Rover Defender P500 ENGINE COSTS
A Land Rover Defender P500 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
MERCEDES Defender P500 ENGINE SIZES
• Land Rover Defender P500 3.0 Litre Engine (AJ133, I6)
MERCEDES Defender P500 FUEL TYPES
• Land Rover Defender P500 Petrol Mild Hybrid Engine Rebuilds
RELATED LAND ROVER ENGINES
Most Land Rover Defender P500 engine rebuilds are completed within 3-5 working days.
Nationwide recovery and collection available for all Land Rover Defender P500 models.









