Jaguar Engine Specialists
JAGUAR AJ25 ENGINEREBUILD & REPLACEMENT
Specialist Jaguar AJ25 engine rebuilds and replacements, fitted across the X-Type. Nationwide recovery, registration-based engine matching, 12-month unlimited-mileage warranty.
Rated Jaguar Engine Specialists - 800+ Engines Rebuilt
Specialist technicians with 10-15 years of experience
12 Month Unlimited-Mileage Warranty
Nationwide Recovery
Free Engine Matching by Registration
Fitted Across the X-Type
Starting from
£3,200
Jaguar AJ25 Engine Specifications
Engine Code
AJ25
Manufacturer
Ford (Duratec-derived)
Configuration
V6 (60° angle)
Capacity
2.5L (2,495 cc)
Fuel
Petrol
Production Years
2001-2009
Used In
1 Jaguar model
Jaguar AJ25 Engine Rebuild Price
Starting From
£3,200
The AJ25 sits on the 6-Cyl Petrol rebuild tier. Exact price depends on condition and parts required - submit your reg for a fixed-price quote.
Get Your Fixed-Price Quote →
Jaguar AJ25 Applications - Every Model & Variant
Not seeing your exact model?
Send us your registration and we'll confirm.
Jaguar AJ25 Rebuild Components
Replaced as Standard
- Main bearings and connecting rod bearings
- Complete gasket and seal set
- Timing chain components where required
- Oil filter housing gasket
Inspected and Measured
- Crankshaft
- Cylinder head
- Timing chain tensioners and guides
- Oil pump
Inspected and Measured
- Cooling system components
- Fuel injectors
Application-Dependent
- Vehicle-specific ancillaries
Components drawn directly from the Jaguar Master Engine Data File. If your AJ25's exact ancillary set isn't covered above, we confirm the full scope once your engine is inspected - not guessed in advance.
OUR WORKSHOP
01RECOVERY COLLECTION
02STRIPPED AJ25 BLOCK
03INTERNAL ENGINE WORK
04TECHNICIANS AT WORK
05ENGINE TESTING (RIG)
06COMPLETED & READY FOR REFIT
Real photos from our workshop - not stock imagery.
JAGUAR AJ25 ENGINE REBUILD PROCESS
WE COVER YOUREXACT VEHICLE
WHY CHOOSE US FOR JAGUAR AJ25 REBUILDS
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
No widely-reported engine issue for the AJ25 - we still recommend a full inspection before any long journey
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 X-Type
RECOVERY
Jaguar X-Type
DIAGNOSTICS
Jaguar X-Type
STRIPPED ENGINE
Jaguar X-Type
TIMING CHAIN REPLACEMENT
Jaguar X-Type
IN FOR REBUILD
Jaguar X-Type
REBUILD IN PROGRESS
HOW IT WORKS
SEND YOURREGISTRATION
RECEIVE YOURFIXED-PRICE QUOTE
WE RECOVERYOUR CAR
REBUILD &REFIT
Most cars 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.
ABOUT THE
JAGUAR AJ25 ENGINE
The AJ25 is a 2.5-litre V6 petrol engine derived from Ford's Duratec family, produced from 2001 to 2009. It was fitted exclusively to the Jaguar X-Type during its first generation (X400 chassis), serving as the entry-level V6 option alongside the larger 3.0-litre AJ30. The AJ25 shares its 60-degree V6 architecture and Ford-derived engineering with the AJ30, differing primarily in capacity and output - 194-201 hp depending on market and year.
JAGUAR AJ25
APPLICATIONS BY MODEL
The AJ25 appears exclusively in the X-Type, across the full production run of the X400 generation (2001-2009). It was offered in both saloon and estate body styles, making it the most accessible V6-powered X-Type and a popular choice for buyers wanting the V6 driving experience in a more affordable package. While the AJ25 is less common in the workshop than the 3.0-litre AJ30, we see them regularly enough that we maintain full rebuild capability for this application.
JAGUAR AJ25
ENGINE COMPATIBILITY
The AJ25 was fitted exclusively to the X-Type (X400), meaning compatibility concerns are simpler than on engines spanning multiple model lines. However, even within the X-Type, differences exist between early and late production variants - ancillaries, ECU calibration, and emissions equipment varied by market and model year. Before we quote or supply anything, we confirm your exact vehicle by registration or VIN to ensure the correct specification is used.
MODEL
Confirm your exact model and variant.
GENERATION
Identify the correct generation (X400).
DRIVETRAIN
Drivetrain and ancillary specification.
CONFIRMED BY REGISTRATION
We confirm by registration/VIN before quoting or supplying anything.
Jaguar AJ25
Applications We Work On
AJ25 in the X-Type (X400, 2001-2009)
The AJ25 in the X-Type is one of the applications we work on - the 2.5-litre V6 petrol option across the X400 generation (2001-2009), available in both saloon and estate body styles.
Starting from:
£3,200
MODEL
Jaguar X-Type X400
ENGINE
AJ25 2.5L
YEAR
2001 - 2009
STARTING FROM
£3,200
Not seeing your exact model above? Send us your registration and we'll confirm your exact spec.
OUR WORKSHOP VIEW OF
THE JAGUAR AJ25
Built, rebuilt and tested by engineers who work on Jaguar engines every day.
Here's our practical view of the AJ25 across its X-Type X400 application.
APPLICATIONS WE SEE:
The AJ25 appears exclusively in the X-Type - a single-application engine, which makes it straightforward to confirm compatibility once your registration is entered.
WHAT WE REPLACE:
Main bearings, connecting rod bearings, gaskets and seals, timing chain components where required, and the oil filter housing gasket as standard on every rebuild.
KNOWN ISSUES:
No widely-reported catastrophic issue pattern has been confirmed for the AJ25 petrol V6. We don't treat this engine as having one universal failure mode; diagnosis is required to establish whether an engine needs repair, rebuild or replacement.
AJ25 REBUILD INFORMATION
Typical rebuild scope:
A TYPICAL
JAGUAR AJ25 REBUILD
The following describes a typical rebuild scope for this engine - illustrative of the work involved, not a specific customer job. Real case studies from our own completed work will replace this section once available.
The AJ25 uses timing chains rather than a belt, which means interval-based belt replacement isn't a concern - but the tensioners and guides are inspected as part of every rebuild to confirm they're within specification. As a Ford-derived Duratec V6, the AJ25 shares its basic architecture with the larger AJ30, meaning our workshop procedures are well-established across both displacements.
01INSPECTION & STRIP-DOWN
Careful inspection of the crankshaft, cylinder head, and timing chain components during strip-down.
02COMPONENT REPLACEMENT
Main bearings, connecting rod bearings, gaskets, seals, and timing chain components replaced as required.
03QUALITY CHECKS
All major rotating assemblies, oil pump, and cooling system components inspected for long-term reliability.
Typical Scope:
Main bearings, connecting rod bearings, gaskets and seals, timing chain components where required, oil filter housing gasket
Starting From:
£3,200
Jaguar AJ25
ENGINE REBUILD COST
A Jaguar AJ25 engine rebuild starts from £3,200, with exact pricing depending on the condition of your existing engine and the parts required.
A full replacement engine and fitting service is also available - submit your registration for a fixed-price quote within 30 minutes.
Starting From
£3,200
Get a fixed-price quote within 30 minutes.
MODEL
Jaguar X-Type X400
ENGINE
AJ25 2.5L
YEAR
2001 - 2009
STARTING FROM
£3,200
JAGUAR AJ25 REBUILD VS REPLACEMENT VS USED
Rebuilding Your AJ25 Engine
Most engine suppliers sell you a used engine of unknown history and hope it matches. We rebuild the engine your Jaguar 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 AJ25 owners choose, and it's the one we'd recommend for most situations.
- Strip down & inspect
- Pressure-test
- Replace worn components
- 12-month unlimited-mileage warranty
Replacement AJ25 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 unlimited-mileage warranty.
- Supplied & fitted by our team
- OEM quality
- 12-month unlimited-mileage warranty
Used AJ25 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.
- Low-mileage units
- Quick turnaround
- Condition risk - we advise honestly
Enter your registration and we’ll talk you through both options honestly.
Reconditioned, Refurbished or Remanufactured?
JAGUAR AJ25 RECONDITIONED 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.
→ Our rebuild service is exactly that.
JAGUAR AJ25 REFURBISHED ENGINES
"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.
→ Our rebuild service covers this.
JAGUAR AJ25 REMANUFACTURED 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. Reconditioned / Refurbished / Remanufactured / Rebuilt - Terminology Explained Rebuilt: Existing engine stripped, inspected and rebuilt to original specification. Reconditioned: Broad industry term; we define our rebuild as a full strip and rebuild. Remanufactured: Usually implies a defined restoration process; our rebuild meets this standard. Used: Existing engine from another vehicle; we can source and fit these. What Jaguar Garage Means by "Rebuild": Full strip-down, inspection, measurement, machining where required, replacement of worn components, reassembly, testing, and refit - with a 12-month unlimited-mileage warranty.
→ That’s consistent with what our rebuild service delivers.
FREQUENTLY ASKED QUESTIONS
GET YOUR FREE
JAGUAR AJ25FIXED-PRICE QUOTE
FIXED PRICE
Transparent quotes with no hidden extras.
12-MONTH WARRANTY
Unlimited mileage for total peace of mind.
QUICK RESPONSE
Most quotes returned within 30 minutes during working hours.
