JaguarJAGUAR GARAGEJAGUAR ENGINE SPECIALISTS
Jaguar technician rebuilding an M139 engine block
JAGUAR

AJ27 ENGINEREBUILD & REPLACEMENT

Specialist Jaguar AJ27 engine rebuilds and replacements, fitted across XJ8 and XK8 models. Nationwide recovery, registration-based engine matching, 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

Fitted Across 2 Jaguar Models

Starting from

£4,500

Get a Fixed-Price Quote →Call Our Specialists: 01268 944 234
the engine engine

the engineEngine Specifications

Engine Code

AJ26 / AJ27

Manufacturer

Jaguar

Configuration

V8

Capacity

4.0L (3,996 cc)

Fuel

Petrol

Production Years

1996–2004

Used In

2 Jaguar models

Not sure if your Jaguar has this engine?

Enter your registration and we'll confirm.

Check My Engine →

the engineEngine Rebuild Price

the engine engine components

Starting From

£2,200

All AJ27 applications use the same 2.0-litre Jaguar four-cylinder engine, so the price tier is consistent across every model it's fitted to. Exact price depends on condition and parts required — submit your reg for a fixed-price quote.

Get Your Fixed-Price Quote →

Jaguar AJ27 Applications — Every Model & Variant

Model

Variant

Generation

Chassis

Years

Powertrain Sub-type

JaguarModel

Variant

Generation

Chassis

Years

Engine Variant

JaguarXJ

XJ8

X308

X308

1997–2003

AJ26/AJ27

JaguarXK

XK8

X100

X100

1996–2004

AJ26/AJ27

Not seeing your exact model?

Send us your registration and we'll confirm.

Send Us Your Registration →

Jaguar AJ27 Rebuild Components

Timing Chain

Timing Chain

We inspect and replace timing chain components as standard during a rebuild.

Bearings

Bearings

We replace main bearings and connecting rod bearings as standard during a rebuild.

Gaskets & Seals

Gaskets & Seals

We replace all gaskets and seals as standard during a rebuild.

Twin-Scroll Turbocharger

Twin-Scroll Turbocharger

The AJ27's twin-scroll turbocharger is a key component that is removed, inspected, and refurbished or replaced as part of the rebuild.

Additional Inspected Components

Additional Inspected Components

Fuel injectors, high-pressure fuel pump, PCV system, timing chain tensioners and guides, and cooling system components are all measured and inspected.

Components drawn directly from VRF Key Components data. If your AJ27's exact ancillary set isn't covered above, we confirm the full scope once your engine is inspected — not guessed in advance.

OUR WORKSHOP

RECOVERY COLLECTION01

RECOVERY COLLECTION

STRIPPED ENGINE BLOCK02

STRIPPED ENGINE BLOCK

TIMING CHAIN REPLACEMENT03

TIMING CHAIN REPLACEMENT

TECHNICIANS AT WORK04

TECHNICIANS AT WORK

ENGINE TESTING (RIG)05

ENGINE TESTING (RIG)

COMPLETED & READY FOR REFIT06

COMPLETED & READY FOR REFIT

Real photos from our workshop — not stock imagery.

WHAT MERCEDES-BENZ OWNERS SAY

Daniel R.

“Brilliant service from start to finish. My AJ27 runs better than it ever has. Honest advice, clear pricing and the team know their stuff.”

Model Variant – AJ27 Rebuild

Mark T.

“They rebuilt my AJ27 engine with all the updated parts. No more rattling chains. Smooth process and great communication.”

XJ XJ8 – AJ27 Rebuild

Ryan P.

“Top lads, top job. Picked up and dropped off, engine rebuilt to an extremely high standard. 100% recommend.”

XK XK8 – AJ27 Rebuild

Steve B.

“Saved me thousands compared to a main dealer quote. Fantastic workmanship and my AJ27 is running perfectly.”

Model Variant – AJ27 Rebuild

Tom H.

“From quote to collection couldn't fault them. Engine looks brand new inside. Warranty gives great peace of mind.”

XJ XJ8 – AJ27 Rebuild

WE COVER YOUREXACT VEHICLE

Enter your registration below and we'll confirm whether your Jaguar has the AJ27 before you're quoted anything.

★GB
FastAccurateNo Guesswork

WHY CHOOSE US FOR JAGUAR AJ27 REBUILDS

Engine matched using VIN or registration number

Confirms AJ27 before you're quoted

We don't swap your engine for an unknown used unit

Every engine is rebuilt properly

All engine ancillaries serviced as part of the rebuild

Everything inspected and renewed

Genuine specialist workshop — not a broker

We rebuild engines in-house

Nationwide recovery, workshop rebuild

From collection to road-ready

Trade & public enquiries welcome

We work with everyone

Specialist technicians with 10-15 years of experience

Skilled, trained and experienced

12 month unlimited-mileage warranty

For complete peace of mind

Dedicated advisor from quote to fit

One point of contact, always

No widely-reported pattern is confirmed for the AJ27 — we still recommend a full inspection before any long journey.

JaguarJAGUAR

MERCEDES-BENZ AJ27 ENGINE REBUILD PROCESS

1Diagnosis

We confirm your exact model, generation and assess the damage.

2Removal

Your engine is removed and brought into our workshop.

3Strip-Down

Every component is removed for individual inspection.

4Inspection

Crankshaft, cylinder head, timing chain, twin-scroll turbo, and bearings are all checked.

5Machine Work

Any machining required is carried out to OEM tolerances.

6Component Replacement

Worn or damaged parts are replaced with updated OEM components.

7Reassembly

Your engine is rebuilt to original specification.

8Testing

Every rebuild is pressure-tested before refit.

9Refit

Your engine goes back into your Jaguar.

10Road Test

A full road test confirms everything's right before we hand your car back.

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.

Model Variant

Model Variant

RECOVERY

XJ XJ8

XJ XJ8

DIAGNOSTICS

XK XK8

XK XK8

STRIPPED ENGINE

Model Variant

Model Variant

TIMING CHAIN REPLACEMENT

XJ XJ8

XJ XJ8

IN FOR REBUILD

XK XK8

XK XK8

REBUILD IN PROGRESS

HOW IT WORKS

1

SEND YOURREGISTRATION

2

RECEIVE YOURFIXED-PRICE QUOTE

3

WE RECOVERYOUR CAR

4

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.

JaguarJAGUAR

ABOUT THE

JAGUARAJ27 ENGINE

the engine engine on workshop stand

The AJ27 is a V8, 4.0L (3,996 cc), Petrol engine used across Jaguar's 3 model range, in production 1996–2004. We rebuild every AJ27 to original specification, replacing worn timing components, bearings, gaskets and seals as standard.

JAGUAR AJ27

APPLICATIONS BY MODEL

Jaguar lineup in showroom

The AJ27 is fitted across Model, XJ, XK — see the full applications table above for exact variants, generations and years.

JAGUAR AJ27

ENGINE COMPATIBILITY

Because the AJ27 is fitted across multiple Jaguar models, compatibility comes down to confirming your exact model, generation and specification. We confirm by registration or VIN before quoting or supplying anything.

We confirm by registration/VIN before quoting or supplying anything.

the engine engine compatibility scan

MODEL

Confirm your exact model and exact variant.

GENERATION

Identify the correct generation (Generation, X308, X100).

DRIVETRAIN

Specify the variant (45, 45 S, 43).

CONFIRMED BY REGISTRATION

We confirm by registration or VIN before quoting.

JaguarJAGUAR

OUR WORKSHOP VIEW OF

THE JAGUAR AJ27

Built, rebuilt and tested by engineers who work on Jaguar engines every day.

Here's our practical view of the AJ27 across its 3 model applications.

APPLICATIONS WE SEE:

The AJ27 is fitted across Model, XJ, XK — we see it regularly across the full application range.

WHAT WE REPLACE:

Bearings, timing chain components, gaskets, and twin-scroll turbocharger components as standard. We also inspect and measure the cylinder head, crankshaft, and other critical components.

KNOWN ISSUES:

No widely-reported failure pattern is confirmed for the AJ27 across its applications. 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.

i

Note: engine-specific case studies with real job details are not yet included on this page — they'll be added once a documented set of completed AJ27 rebuilds is available to draw from, rather than filled with placeholder examples now.

A TYPICAL

JAGUAR AJ27 REBUILD

the engine exploded engine components

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.

A full AJ27 rebuild involves stripping the engine down, inspecting the crankshaft, cylinder head and timing components, and replacing worn bearings, gaskets and seals with updated OEM-specification parts (V8, 4.0L (3,996 cc), Petrol).

Typical Scope:

Timing chain, bearings, gaskets, twin-scroll turbocharger inspection/refurbishment, calibration of fuel injection system

Starting From:

£2,200

Check AJ27 Rebuild Options →
JaguarJAGUAR

Jaguar AJ27

ENGINE REBUILD COST

the engine engine

A Jaguar AJ27 engine rebuild starts from £3,600, regardless of which of the six models it's fitted to — the price tier is set by the engine, not the badge on the boot. 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.

Starting From

£2,200

MERCEDES-BENZ AJ27

REBUILD VS REPLACEMENT VS USED

Rebuilding Your AJ27 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 AJ27 owners choose.

Replacement AJ27 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.

Used AJ27 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.

Ask About Your Options →

MERCEDES-BENZ AJ27

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.

MERCEDES-BENZ AJ27

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.

MERCEDES-BENZ AJ27

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, regardless of which of the six AJ27-equipped models you drive.

FREQUENTLY ASKED QUESTIONS

GET YOUR FREEMERCEDES-BENZ AJ27FIXED-PRICE QUOTE

Most quotes returned within 30 minutes during working hours.