Engines Market

Jaguar 4.0 V8 Specialists

Jaguar S-Type 4.0 V8 Engine Replacement Compare Prices & Get Quotes

Get quotes today from trusted UK Jaguar S-Type 4.0 V8 engine specialists. Compare prices on reconditioned, rebuilt and used engines to find the most reliable and cost-effective replacement for your executive saloon.

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12-Month Warranty
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100+ Suppliers
Jaguar S-Type 4.0 V8 Engine
from£1,900 to £3,600...
  • Usedfrom £800
  • Reconditionedfrom £1,500
  • Common codesAJ26
Jaguar s-type 4.0 V8 Used Engine — AJ26Jaguar s-typeUsed Engine — AJ26Jaguar s-type 4.0 V8 Reconditioned Engine — AJ26Jaguar s-typeReconditioned Engine — AJ26Jaguar s-type 4.0 V8 Rebuilt Engine — AJ26Jaguar s-typeRebuilt Engine — AJ26

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How it works

3 Simple Steps to Finding the Right Replacement Engine

Clear information first, then the right engine and specialist for your exact vehicle.

Variant History

Jaguar S-Type 4.0 V8 Engine History & Specs at a Glance

When the Jaguar S-Type 4.0 V8 launched in 1999, it served as the flagship naturally aspirated petrol option for the X200 generation, delivering smooth, effortless cruising and refined power before being replaced by the updated 4.2L unit in 2003.

Jaguar S-Type 4.0 V8
  1. 1999

    AJ26 4.0L V8 introduced, delivering 280-290hp and establishing the X200's premium petrol credentials with a robust dual-overhead-cam design.

  2. 2003

    Production of the 4.0L variant ceased as Jaguar transitioned the flagship naturally aspirated role to the updated 4.2L AJ33 V8, featuring revised intake geometry and enhanced low-end torque.

Every engine fitted to the Jaguar S-Type 4.0 V8 is covered below, with UK rebuilt pricing and known failure points.

Engine Codes & Pricing

Jaguar S-Type 4.0 V8 Engine Codes Specifications & Replacement Cost

Find your exact engine code, specs and UK replacement cost guide.

AJ26 — 4.0L Petrol (1999-2002) engine

AJ26 — 4.0L Petrol (1999-2002)

Power Output
280-290hp
Years Fitted
1999-2002

Can’t find your exact engine code?-> Get quotes for AJ26 Jaguar S-Type 4.0 V8 engine replacement

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Common Problems

Jaguar S-Type 4.0 V8 Engine Problems Repair Cost vs Replacement

The Jaguar S-Type 4.0 V8 reliability landscape is defined by its AJ26 architecture. While offering refined performance, it is susceptible to specific high-mileage wear points. Rebuilt engines supplied through EnginesMarket include upgraded internal components designed to permanently address these original failure points, backed by a minimum 12-month unlimited mileage warranty.

Common failure points and repair options

Main Bearing Wear & Timing Chain Tensioner Failure

Affected
Jaguar S-Type 4.0 V8 (AJ26, 1999-2002)
Typical failure mileage
70,000 - 110,000 miles
Root cause
Extended oil service intervals and the original composite timing chain guides degrade under heat cycles, allowing chain slack. This can lead to oil pressure drops and main bearing wear, or in severe cases, timing jumps and valve contact.

Repair options

Repair tierDealer priceSpecialist price
Minor - Preventative Timing Kit Installation£2,200-£2,800£1,100-£1,500
Full Replacement - rebuilt/reconditioned engine£4,500-£6,500£1,900-£3,600
Our recommendation
If your Jaguar S-Type 4.0 V8 is exhibiting early timing chain rattle but runs smoothly, a preventative timing kit installation from a trusted specialist is the most cost-effective first step. However, if main bearing knock is present, a full rebuilt engine with upgraded internals is the only reliable long-term solution, provided the vehicle's overall condition warrants the expense.
-> Compare rebuilt AJ26 Jaguar S-Type 4.0 V8 engine prices

Don't Let Engine Failure Write Off Your Jaguar S-Type 4.0 V8

Whether you are dealing with timing chain rattle, main bearing wear, or cooling system leaks on your Jaguar S-Type 4.0 V8, the financial decision between repeated dealership repairs and a complete engine replacement is straightforward. EnginesMarket connects you with trusted UK specialists who supply fully rebuilt engines featuring upgraded internal components that permanently address the original design flaws. Every unit comes with a minimum 12-month unlimited mileage warranty, nationwide delivery, and optional supply & fit packages, allowing you to bypass main dealer markups and return to the road with confidence.

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FAQ

Jaguar S-Type 4.0 V8 Engine ReplacementFrequently Asked Questions

Everything Jaguar S-Type 4.0 V8 owners usually ask before choosing a rebuilt, reconditioned or used replacement engine.

Why Choose Us

Compare Jaguar S-Type 4.0 V8 Engine Prices Today

Comparing quotes is completely free and carries no obligation. By entering your registration, you ensure that every quote you receive is precisely matched to your Jaguar S-Type 4.0 V8's specific AJ26 engine code, guaranteeing compatibility and transparent pricing from vetted UK specialists.

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