

Jaguar XF 4.2 V8Engine Rebuild— From £4,500
Specialist Jaguar XF 4.2 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
AJ34 V8 Specialists

Your Jaguar XF 4.2 V8 Engine

Vehicle
Jaguar XF 4.2 V8
Model
XF
Variant
4.2 V8
Fuel
Petrol
Engine
AJ34
Capacity
4.2L V8
Generations
X250 (2007–~2011)
Rebuild From
£4,500
Not sure which engine you have?
The XF 4.2 V8 uses the AJ34 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
Jaguar XF 4.2 V8Engine Rebuild Price
Starting From £4,500

Engine Code
AJ34Rebuild From
£4,500

Generation
Exact price depends on condition and parts required — submit your reg for a fixed-price quote.
Jaguar XF 4.2 V8 Oil Leaks & Coolant System Wear (AJ34 I6)
The AJ34 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 AJ34 V6. We replace timing chains, bearings, water pump and gaskets as standard on every AJ34 rebuild.
Because the XF 4.2 V8 uses a completely different engine family from the V8 M178 fitted to the XF 63 and GT 63 S, parts and rebuild specifications don't cross over between them.
Source: Established AJ34 specialist pattern — timing chain, bearing and gasket wear across integrated-starter-generator inline-six units.

Jaguar XF 4.2 V8ENGINE OPTIONS
Every XF 4.2 V8 is different. That's why we offer the right solution for your engine, your car and your budget.
REBUILDING YOUR XF 4.2 V8 ENGINE
Most engine suppliers sell you a used engine of unknown history and hope it matches. We rebuild the engine your XF 4.2 V8 already has instead — strip it down, pressure-test it, and replace every worn or damaged component 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 XF 4.2 V8 owners choose, and it's the one we'd recommend for most situations.
RECONDITIONED XF 4.2 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.
REFURBISHED XF 4.2 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.
REMANUFACTURED XF 4.2 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 AJ34.
REPLACEMENT XF 4.2 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.
USED XF 4.2 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.
NOT SURE WHICH OPTION IS RIGHT FOR YOU?
Enter your registration below and we'll confirm your AJ34 and talk you through the best solution for your XF 4.2 V8, honestly.
Ask About Your OptionsOUR WORKSHOP
01RECOVERY COLLECTION
02AJ34 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 Jaguar XF 4.2 V8 rebuild looks like.
Jaguar XF 4.2 V8 ENGINE REBUILD PROCESS
WHAT MERCEDES XF 4.2 V8 OWNERS SAY
WE COVER YOUREXACT VEHICLE
Enter your registration below and we'll confirm your Jaguar XF 4.2 V8 has the AJ34, along with an exact rebuild price.
WHY MERCEDES XF 4.2 V8 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.

Jaguar XF 4.2 V8
RECOVERY

Jaguar XF 4.2 V8
DIAGNOSTICS

Jaguar XF 4.2 V8
STRIPPED ENGINE

Jaguar XF 4.2 V8
TIMING CHAIN REPLACEMENT

Jaguar XF 4.2 V8
IN FOR REBUILD

Jaguar XF 4.2 V8
REBUILD IN PROGRESS
HOW IT WORKS
SEND YOURREGISTRATION
RECEIVE YOURFIXED-PRICE QUOTE
WE RECOVERYOUR CAR
REBUILD &REFIT
Most XF 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 XF 4.2 V8 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 Jaguar XF 4.2 V8 ENGINE

The XF 4.2 V8 uses the AJ34 — a 4.2-litre naturally aspirated V8 petrol engine. It was fitted from 2007 until approximately 2011 across the X250 generation, before being superseded by the 5.0-litre AJ133 V8. The XF 4.2 V8 is no longer in production, but we continue to rebuild and replace engines for every one still on the road.
We continue to rebuild and replace AJ34 engines for every XF 4.2 V8 on the road.
Jaguar XF 4.2 V8 ENGINE CODES
A 4.2-litre naturally aspirated V8 petrol engine fitted to the XF from 2007 to approximately 2011 (X250). No specific known issue confirmed for this application. We service it to the same standard as our other XF rebuilds. Check Your AJ34 XF 4.2 V8 → [link to quote form]
Check Your AJ34 XF 4.2 V8Jaguar XF 4.2 V8 ENGINE COMPATIBILITY

The XF 4.2 V8 uses the AJ34 engine across the X250 generation. Before we quote or supply anything, we confirm:
Your exact engine code (AJ34) via registration or VIN
Your generation (X250)
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 XF quote — it protects you from paying for parts that don't fit your actual car.
Jaguar XF 4.2 V8 APPLICATIONS BY GENERATION
Jaguar XF 4.2 V8 ENGINES BY YEAR
Jaguar XF 4.2 V8 has used the AJ34 throughout. If you're unsure of your exact spec, we'll confirm it before you book.
The AJ34 has been fitted to every XF 4.2 V8 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 Jaguar XF 4.2 V8 MODEL YEAR:
Jaguar XF 4.2 V8
2007 Engine Rebuild
Jaguar XF 4.2 V8
2008 Engine Rebuild
Jaguar XF 4.2 V8
2009 Engine Rebuild
Jaguar XF 4.2 V8
2010 Engine Rebuild
Jaguar XF 4.2 V8
2011 Engine Rebuild
If your registration year isn't listed above, get in touch — we'll confirm availability directly against your reg.
Jaguar XF 4.2 V8 ENGINE COSTS
A Jaguar XF 4.2 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.

12 MONTH
UNLIMITED-MILEAGE
WARRANTY
MERCEDES XF 4.2 V8 ENGINE SIZES
• Jaguar XF 4.2 V8 3.0 Litre Engine (AJ34, I6)
MERCEDES XF 4.2 V8 FUEL TYPES
• Jaguar XF 4.2 V8 Petrol Mild Hybrid Engine Rebuilds
RELATED JAGUAR ENGINES
Most Jaguar XF 4.2 V8 engine rebuilds are completed within 3-5 working days.
Nationwide recovery and collection available for all Jaguar XF 4.2 V8 models.









