

Land Rover Defender P300Engine Rebuild— From £2,200
Specialist Land Rover Defender P300 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
AJ200P Petrol Specialists

Your Land Rover Defender P300 Engine

Vehicle
Land Rover Defender P300
Model
Defender
Variant
P300
Fuel
Petrol
Engine
AJ200P
Capacity
2.0L I4
Generations
L663 (2019–present)
Rebuild From
£2,200
Not sure which engine you have?
The Defender P300 uses the AJ200P 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 P300Engine Rebuild Price
Starting From £2,200

Engine Code
AJ200PRebuild From
£2,200

Generation
Exact price depends on condition and parts required — submit your reg for a fixed-price quote.
Land Rover Defender P300 Oil Leaks & Coolant System Wear (AJ200P I6)
The AJ200P 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 AJ200P V6. We replace timing chains, bearings, water pump and gaskets as standard on every AJ200P rebuild.
Because the Defender P300 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 AJ200P specialist pattern — timing chain, bearing and gasket wear across integrated-starter-generator inline-six units.

Land Rover Defender P300ENGINE OPTIONS
Every Defender P300 is different. That's why we offer the right solution for your engine, your car and your budget.
REBUILDING YOUR DEFENDER P300 ENGINE
Most engine suppliers sell you a used engine of unknown history and hope it matches. We rebuild the engine your Defender P300 already has instead — strip it down, pressure-test it, and replace every worn or damaged component (timing chains, bearings and 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 P300 owners choose, and it's the one we'd recommend for most situations.
RECONDITIONED DEFENDER P300 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 P300 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 P300 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 AJ200P.
REPLACEMENT DEFENDER P300 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 P300 ENGINES
In some cases, a matched low-mileage used engine is the right call — particularly if you need your car 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 AJ200P and talk you through the best solution for your Defender P300, honestly.
Ask About Your OptionsOUR WORKSHOP
01RECOVERY COLLECTION
02AJ200P 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 P300 rebuild looks like.
Land Rover Defender P300 ENGINE REBUILD PROCESS
WHAT MERCEDES Defender P300 OWNERS SAY
WE COVER YOUREXACT VEHICLE
Enter your registration below and we'll confirm your Land Rover Defender P300 has the AJ200P, along with an exact rebuild price.
WHY MERCEDES Defender P300 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 P300
RECOVERY

Land Rover Defender P300
DIAGNOSTICS

Land Rover Defender P300
STRIPPED ENGINE

Land Rover Defender P300
TIMING CHAIN REPLACEMENT

Land Rover Defender P300
IN FOR REBUILD

Land Rover Defender P300
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 P300 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 P300 ENGINE

The Defender P300 uses the Ingenium AJ200P — a 2.0-litre four-cylinder petrol engine. It was introduced with the current-generation L663 Defender in 2019 and has remained in production through to the present day. Unlike the mild-hybrid diesel variants in the Defender range, the P300 has no 48V MHEV system, which means it's genuinely excluded from the DC-DC converter failure pattern that affects some other L663 Defenders.
We continue to rebuild and replace AJ200P engines for every Defender P300 on the road.
Land Rover Defender P300 ENGINE CODES
A 2.0-litre four-cylinder petrol engine fitted to the Defender P300 from 2019 to present (L663). No specific known issue is confirmed for this engine in this application. We replace timing chains, bearings and gaskets as standard on every rebuild. Check Your AJ200P Defender P300 → [link to quote form]
Check Your AJ200P Defender P300Land Rover Defender P300 ENGINE COMPATIBILITY

The Defender P300 uses the Ingenium AJ200P across all L663 body styles — 90, 110 and 130. Because there's only one engine code for this variant, compatibility is straightforward. However, different model years may have minor specification differences, and we always confirm your exact vehicle details via registration before quoting or supplying any parts.
Your exact engine code (AJ200P) 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 P300 APPLICATIONS BY GENERATION
Land Rover Defender P300 ENGINES BY YEAR
Land Rover Defender P300 has used the AJ200P throughout. If you're unsure of your exact spec, we'll confirm it before you book.
The AJ200P has been fitted to every Defender P300 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 P300 MODEL YEAR:
Land Rover Defender P300
2019 Engine Rebuild
Land Rover Defender P300
2020 Engine Rebuild
Land Rover Defender P300
2021 Engine Rebuild
Land Rover Defender P300
2022 Engine Rebuild
Land Rover Defender P300
2023 Engine Rebuild
Land Rover Defender P300
2024 Engine Rebuild
Land Rover Defender P300
2025 Engine Rebuild
Land Rover Defender P300
2026 Engine Rebuild
If your registration year isn't listed above, get in touch — we'll confirm availability directly against your reg.
Land Rover Defender P300 ENGINE COSTS
A Land Rover Defender P300 engine rebuild starts from
£2,200
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
MERCEDES Defender P300 ENGINE SIZES
• Land Rover Defender P300 3.0 Litre Engine (AJ200P, I6)
MERCEDES Defender P300 FUEL TYPES
• Land Rover Defender P300 Petrol Mild Hybrid Engine Rebuilds
RELATED LAND ROVER ENGINES
Most Land Rover Defender P300 engine rebuilds are completed within 3-5 working days.
Nationwide recovery and collection available for all Land Rover Defender P300 models.









