

Jaguar XJ 5.0 V8Engine Rebuild- From £4,500
Specialist Jaguar XJ 5.0 V8 engine rebuilds and replacements, with registration-based engine matching, nationwide recovery and a 12-month unlimited-mileage warranty
Rated Jaguar 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 Specialists

Your Jaguar XJ 5.0 V8 Engine

Vehicle
Jaguar XJ 5.0 V8
Model
XJ
Variant
5.0 V8
Fuel
Petrol
Engine
AJ133
Capacity
5.0L V8
Generation
X351 (2009-2019)
Rebuild From
£4,500
Not sure which engine you have?
Enter your registration below and we'll confirm your exact spec before you get a quote.
DVLA & VIN verified
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No obligation quote

Jaguar XJ 5.0 V8Engine Rebuild Price
Starting From £4,500
Engine Code

Rebuild From
£4,500
Generation

2009-2019
Jaguar XJ 5.0 V8
Variant

5.0L Petrol
AJ133
AJ133 sits on a single rebuild tier.
Exact price depends on condition and parts required - submit your reg for a fixed-price quote.
Jaguar XJ 5.0 V8 Timing Chain Tensioner & Water Pump (X351, AJ133)
If your XJ 5.0 V8 is a 2009-2019 model with the AJ133 5.0-litre V8 - that's the X351 generation - timing chain tensioner and guide wear is a well-documented design flaw on this engine, confirmed by multiple independent sources and subject to a US class-action lawsuit covering this exact engine across multiple JLR models. The hardened steel tensioner piston wears an aluminium guide button over time and can fail with no warning. We replace the timing chain, tensioners and guides as standard on every AJ133 rebuild.
Water pump bearing and seal failure is also documented on this engine, sometimes under 20,000 miles due to coolant ingress. We inspect and replace the water pump where needed as part of the rebuild.
Source: verified via multiple independent sources (kmotors.co.uk, rrsport.co.uk lawsuit reference, TopSpeed reliability ranking), per VRF-jaguar-xj.md. Applies to AJ133/AJ133S in X351 generation only; diesel V6 and earlier X300/X308/X350 generations explicitly excluded from this claim.
Jaguar XJ 5.0 V8ENGINE OPTIONS
Every XJ 5.0 V8 is different. That's why we offer the right solution for your engine, your car and your budget.
REBUILDING YOUR XJ 5.0 V8 ENGINE
Most engine suppliers sell you a used engine of unknown history and hope it matches. We rebuild the engine your XJ already has instead - strip it down, pressure-test it, and replace every worn or damaged component (timing chain, tensioners, guides, water pump) 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 XJ owners choose, and it's the one we'd recommend for most situations.
From £4,500RECONDITIONED XJ 5.0 V8 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.
Learn moreREFURBISHED XJ 5.0 V8 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.
Learn moreREMANUFACTURED XJ 5.0 V8 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.
Learn moreREPLACEMENT XJ 5.0 V8 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.
Learn moreUSED XJ 5.0 V8 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.
Learn moreNOT 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 XJ 5.0 V8, honestly.
Ask About Your OptionsOUR WORKSHOP

01RECOVERY COLLECTION
Jaguar XJ 5.0 V8 recovered nationwide.

02STRIPPED ENGINE BLOCK
Jaguar XJ 5.0 V8 AJ133 engine stripped for inspection.

03TIMING CHAIN REPLACEMENT
Jaguar XJ 5.0 V8 timing chain and guides replaced.
04TECHNICIANS AT WORK
Jaguar XJ 5.0 V8 engine rebuild in progress.
05ENGINE TESTING (RIG)
Jaguar XJ 5.0 V8 AJ133 tested before dispatch.
06COMPLETED & READY FOR REFIT
Jaguar XJ 5.0 V8 engine rebuilt to OEM specification.
Real photos from our workshop - not stock imagery. This is what a genuine Jaguar XJ 5.0 V8 rebuild looks like.
Jaguar XJ 5.0 V8 ENGINE REBUILD PROCESS
WE COVER YOUREXACT VEHICLE
Enter your registration below and we'll confirm your Jaguar XJ 5.0 V8 has the AJ133, along with an exact rebuild price.
WHY JAGUAR XJ 5.0 V8 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
OUR MOST RECENTJAGUAR 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.

Jaguar XJ 5.0 V8
RECOVERY

Jaguar XJ 5.0 V8
DIAGNOSTICS

Jaguar XJ 5.0 V8
STRIPPED ENGINE

Jaguar XJ 5.0 V8
TIMING CHAIN REPLACEMENT

Jaguar XJ 5.0 V8
IN FOR REBUILD

Jaguar XJ 5.0 V8
REBUILD IN PROGRESS
HOW IT WORKS
SEND YOURREGISTRATION
RECEIVE YOURFIXED-PRICE QUOTE
WE RECOVERYOUR CAR
REBUILD &REFIT
Most XJ 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 XJ 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 Jaguar XJ 5.0 V8 ENGINE

The XJ 5.0 V8 - fitted to the X351 generation from 2009 to 2019 - uses the AJ133 5.0-litre naturally aspirated V8. This engine was Jaguar's third-generation AJ-V8, introduced alongside the X351's launch and representing a significant development over the earlier 4.2-litre units. It produces 385bhp in naturally aspirated form and was also offered in supercharged guise as the XJR. The engine's timing chain tensioner design has been the subject of documented reliability concerns, which is why we address it as standard on every rebuild.
We continue to rebuild and replace AJ133 engines for every XJ 5.0 V8 on the road.
Jaguar XJ 5.0 V8 ENGINE CODES

AJ133 (X351)
A 5.0-litre naturally aspirated V8 petrol engine fitted to the XJ from 2009 to 2019 (X351 generation). Known for timing chain tensioner and guide wear, and water pump bearing/seal failure - see the callout above. We replace timing chain components and inspect the water pump as standard on every AJ133 rebuild.
Check Your AJ133 XJ 5.0 V8Jaguar XJ 5.0 V8 ENGINE COMPATIBILITY

The XJ 5.0 V8 uses the AJ133 engine exclusively across its entire X351 production run. However, fitting the wrong replacement - or assuming an AJ133 part from a different model will work on an XJ - risks a compatibility problem that's expensive to unpick. Before we quote or supply anything, we confirm:
Your exact engine code (AJ133) via registration or VIN
Your generation (X351)
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 XJ 5.0 V8 quote - it protects you from paying for parts that don't fit your actual car.
Jaguar XJ 5.0 V8 APPLICATIONS BY GENERATION
Jaguar XJ 5.0 V8 ENGINES BY YEAR
Jaguar XJ 5.0 V8 has used the AJ133 throughout (X351 (2009-2019)). If you're unsure of your exact spec, we'll confirm it before you book.
We Cover Every Jaguar XJ 5.0 V8 Model Year:
- Jaguar XJ 5.0 V8 2012 Engine Rebuild
- Jaguar XJ 5.0 V8 2014 Engine Rebuild
- Jaguar XJ 5.0 V8 2016 Engine Rebuild
- Jaguar XJ 5.0 V8 2018 Engine Rebuild
If your registration year or model isn't listed above, get in touch - we'll confirm availability directly against your reg.
Jaguar XJ 5.0 V8 Engine Details:
Jaguar XJ 5.0 Litre Engine (AJ133, V8)
Jaguar XJ 5.0 V8 Petrol Engine Rebuilds
If your exact specification isn’t listed here, get in touch - we’ll confirm availability directly against your reg.
Jaguar XJ 5.0 V8 Engine COSTS
A Jaguar XJ 5.0 V8 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.
JAGUAR XJ 5.0 V8 ENGINE SIZES
• Jaguar XJ 5.0 Litre Engine (AJ133, V8)
JAGUAR XJ 5.0 V8 FUEL TYPES
• Jaguar XJ 5.0 V8 Petrol Engine Rebuilds

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