Land Rover Defender P525Engine 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
AJ133 Supercharged V8 Specialists
Your Land Rover Defender P525 Engine
Vehicle
Land Rover Defender P525
Model
Land Rover
Variant
Defender P525
Fuel
Petrol
Engine
[MISSING: engine code not independently confirmed in VRF]
Capacity
[MISSING: capacity not independently confirmed in VRF]
Generation
generation (2014–2025, discontinued)
Rebuild From
£3,200
Not sure which engine you have?
The Defender P525 uses the engine 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 P525Engine Rebuild Price
Starting From £4,500
Engine Code
Rebuild From
£4,500
Generation
Exact price depends on condition and parts required — submit your reg for a fixed-price quote.
Land Rover Defender P525 Oil Leaks & Coolant System Wear (engine I6)
The engine 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 engine V6. We replace timing chains, bearings, water pump and gaskets as standard on every engine rebuild.
Because the Defender P525 uses a completely different engine family from the V8 M178 fitted to the Land Rover 63 and GT 63 S, parts and rebuild specifications don't cross over between them.
Source: Established engine specialist pattern — timing chain, bearing and gasket wear across integrated-starter-generator inline-six units.
Land Rover Defender P525ENGINE OPTIONS
Every Defender P525 is different. That's why we offer the right solution for your engine, your car and your budget.
REBUILDING YOUR Defender P525 ENGINE
We rebuild the engine your Defender P525 already has instead of selling you a used engine of unknown history — strip it down, pressure-test it, and replace every worn or damaged component (timing chains, bearings, water pump, gaskets) with updated OEM parts. Near-new performance with a 12-month unlimited-mileage warranty.
From £3,200RECONDITIONED Defender P525 ENGINES
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.
Learn moreREFURBISHED Defender P525 ENGINES
Restoring your existing engine to full working condition rather than replacing it outright. Our rebuild service covers this.
Learn moreREMANUFACTURED Defender P525 ENGINES
Built to original specification with updated components. That's consistent with what our rebuild service delivers on the engine.
Learn moreREPLACEMENT Defender P525 ENGINES
If your existing engine is beyond economical repair, we offer complete engine replacement and fitting – sourced and fitted by our team, with the same 12-month warranty.
Learn moreUSED Defender P525 ENGINES
Matched low-mileage used engines for when time is critical. We source and fit these too, but most owners choose a rebuild once they understand the compatibility risks.
Learn moreNOT SURE WHICH OPTION IS RIGHT FOR YOU?
Enter your registration below and we'll confirm your engine and talk you through the best solution for your Defender P525, honestly.
Ask About Your Options
OUR WORKSHOP
01RECOVERY COLLECTION
02engine 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
WHAT MERCEDES Defender P525 OWNERS SAY
WE COVER YOUREXACT VEHICLE
Enter your registration below and we'll confirm your Land Rover Defender P525 has the right engine, along with an exact rebuild price.
WHY MERCEDES Defender P525 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 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 Land Rover 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 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 — 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 engine 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 P525 → [link to quote form]
Check Your engine 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
This is why we always start with your registration rather than a generic Land Rover quote — it protects you from paying for parts that don't fit your actual car.
Land Rover Defender P525 APPLICATIONS BY GENERATION
Generation
Chassis
Years
Engine Code
Fuel
L663
90
2021–present
AJ133
Petrol Supercharged
L663
110 (US market)
2026
AJ133
Petrol Supercharged
MERCEDES Defender P525 ENGINES BY YEAR
From the generation's launch in 2023, the Defender P525 has used the engine 3.0-litre inline-six mild hybrid throughout. If you're unsure of your exact spec, we'll confirm it before you book.
The engine 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 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
MERCEDES Defender P525 ENGINE SIZES
• Land Rover Defender P525 3.0 Litre Engine (engine, I6)
MERCEDES Defender P525 FUEL TYPES
• Land Rover Defender P525 Petrol Mild Hybrid Engine Rebuilds
RELATED LAND ROVER ENGINES
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.