Land Rover Engines In Stock NOW: Live Prices, Rebuild Cost & Supply & Fit Service (UK-Wide)
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Jaguar S-TYPE Engine Specialists - From AJ-V6 to Supercharged AJ26
At JLR Engine Specialists Ltd, we've focused exclusively on Jaguar Land Rover engines since 2009 - and the Jaguar S-TYPE is one of the most respected executive saloons we service in our Billericay, Essex workshop. Whether you own a 1999 S-TYPE 2.5L V6 (AJ25), a 2003 S-TYPE R with the 4.2L supercharged V8 (AJ26SC), or a 2007 S-TYPE 2.7L diesel (AJD-V6), our team has rebuilt, replaced, or restored hundreds of S-TYPE engines across both generations (1998-2007).
We specialise in all Jaguar S-TYPE engine families, covering every major trim (SE, Sport, Sovereign, R):
All Engine Replacements Include:
- ✓ Full fitment
- ✓ ECU reset
- ✓ Road test
- ✓ 12-month unlimited-mileage warranty
- ✓ No hidden diagnostics fees if you proceed
Unlike general garages, we work only on JLR powertrains - so your S-TYPE engine is handled by technicians who understand its specific failure patterns, from AJ25 head gasket weaknesses and V8 timing chain tensioner wear to AJD-V6 injector carbon lock and supercharger clutch degradation - issues commonly reported in high-mileage or infrequently serviced examples.
Based in Billericay (near Chelmsford and Romford), we offer UK-wide vehicle collection for a small fee, ensuring your S-TYPE is repaired in our dedicated JLR-only workshop - not a generic bay with non-specialist tools.
"All engine replacements include: Full fitment, ECU reset, road test, and a 12-month unlimited-mileage warranty - with no hidden diagnostics fees if you proceed."
Our Gallery
Precision. Performance. Perfection.
Jaguar S-TYPE Engine Fit Guaranteed: All X200 & X202 Models (1999-2008)
Starting from £3,700, our reconditioned engines are engineered for perfect fitment across every Jaguar S-TYPE model - including all variants of the X200 (1999-2002) and X202 facelift (2002-2008). No more guessing: we verify compatibility down to the VIN for SE, Sport, Executive, and special editions like the V6 SE or R Performance.
Every engine is cross-referenced against Jaguar Land Rover’s technical bulletins - including known issues like the 2.5L/3.0L V6 head gasket failures (frequently seen in our workshop on high-mileage examples) and timing chain tensioner wear in early V8 units. With 15+ years of JLR engine expertise and 1,200+ engines rebuilt in our Billericay workshop near Chelmsford, Essex, fitment is guaranteed.
S-TYPE Engine Prices: Transparent, OEM-Spec Reconditioned Units from £3,700
Save 40% vs. Dealership Prices - Compare pricing for 2.5L V6, 3.0L V6, 4.0L V8, and supercharged 4.2L V8 (S-TYPE R) engines across all S-TYPE X200/X202 models (1999-2008).
| Engine Code | Est. Price (£) | S-TYPE Models (Trim) | Engine Size (L) | Fuel Type | Power (kW/HP) | Year Range | Warranty | Request Quote |
|---|
Note: All replacements include correct ancillaries (manifolds, sumps, sensors, supercharger for R models, and wiring looms) matched to your VIN. The AJD-V6 diesel, while Ford-derived, is rebuilt to Jaguar-specific tolerances and calibration standards.
Key Reliability Insights
AJ25/AJ30 V6: Prone to VVT solenoid failure, head gasket leaks, and coolant ingress into sump.
AJ27 Diesel: Suffers from EGR cooler failure and injector coking - common in urban driving.
Supercharged V8: Intercooler pump failure leads to heat soak and detonation.
AJ6 V8 (S-Type R): Nikasil-lined blocks in early 4.0L engines (1999-2001) are not compatible with high-sulphur fuel - can lead to bore wear. Later 4.2L uses steel liners (more robust).
"Certified S-TYPE Engine Rebuilds by JLR-Trained Technicians - Based in Essex, Serving the South East & UK via Collection"
How We Rebuild Your Jaguar S-TYPE Engine - Precision, Not Promises
This isn't a catalogue rebuild. Every Jaguar S-TYPE engine we restore is treated as a unique case - based on its engine code, mileage, service history, and failure pattern. Here's our 5-step workshop process, performed entirely in-house at our Billericay, Essex facility by JLR-trained technicians:
Root-Cause Diagnosis - Beyond the Obvious
We identify the true failure trigger - not just the symptom:
→ AJ25 V6? Inspect for head gasket failure (common between cylinders 3-4), timing chain tensioner wear, and oil pump condition.
→ AJ26SC (S-TYPE R)? Assess supercharger clutch engagement, oil pickup screen for sludge, and intercooler hose integrity.
→ AJD-V6 Diesel? Check EGR cooler for internal leaks and test injectors for carbon lock - a frequent cause of misfires.
You receive photo evidence and diagnostic logs - not assumptions.
Precision Metrology - Engineered to OEM Tolerances
Using calibrated bore gauges, dial indicators, and surface plates, we verify:
• Crankshaft runout and journal wear (<0.03mm tolerance)
• Cylinder bore taper and roundness (critical for ring seal in high-compression engines)
• Cylinder head flatness (<0.05mm over 300mm - essential for MLS gasket reliability)
If out of spec, we machine in-house - no outsourcing.
Rebuild with Known Weakness Fixes
We integrate proven upgrades to prevent repeat failures:
• AJ25 V6: MLS head gasket, reinforced timing chain guides, upgraded oil pump pickup
• AJ26/AJ26SC V8: High-flow oil pickup tube, updated tensioners, Viton supercharger seals
• AJD-V6 Diesel: Upgraded EGR cooler, revised injector seals, reinforced sump gasket
All components are OEM or premium-tier: Mahle pistons, Elring gaskets, Bosch sensors - never budget alternatives.
In-House Machining & Clean Assembly
Block honing, head resurfacing, and pressure testing are all completed on-site. Engines are assembled in a dedicated clean bay with controlled airflow to prevent contamination - critical for both petrol and diesel performance engines.
Validation - Controlled Run-In + Real-World Testing
Before your S-TYPE leaves our workshop:
• 45-minute controlled run-in on engine stand (oil pressure ≥3.5 bar at hot idle)
• Full ECU reset, adaptation, and security handshake using JLR SDD and Autologic
• 15-mile loaded road test including cold restart, highway load, throttle response, and emissions verification
You receive a signed validation report - not just a warranty slip.
"Since 2009, we've rebuilt 1,200+ JLR engines - including hundreds of S-TYPEs across V6, V8, and diesel variants. We don't sell engines. We sell peace of mind for S-TYPE owners across Essex and the UK."
"Since 2009, we've rebuilt 1,200+ JLR engines - including hundreds of S-TYPEs across V6, V8, and diesel variants. We don't sell engines. We sell peace of mind for S-TYPE owners across Essex and the UK."
Jaguar S-TYPE Engine Warning Signs - And How We Fix Them for Good
Spot one of these issues? You're not alone. These are the most frequent S-TYPE engine failures we diagnose weekly in our Billericay, Essex workshop - and exactly how we resolve them permanently, not just temporarily.
| Problem | Likely Cause | Our Fix | Affects |
|---|---|---|---|
| White smoke on cold start / coolant loss | Head gasket failure (common between cylinders 3-4 on AJ25 V6) | Full strip-down; MLS head gasket upgrade + pressure-tested block and head | S-TYPE 2.5L / 3.0L V6 (1998-2007) |
| Rattling or knocking on startup | Timing chain tensioner or guide wear (V6/V8) | Full timing system replacement with updated tensioners and guides | AJ25, AJ26, AJ26SC (2000-2007) |
| Loss of power + "Engine Fault" light | Clogged EGR cooler or injector carbon lock (diesel) / failing coil packs (petrol) | EGR cooler replaced; injectors cleaned or renewed; ignition system tested | S-TYPE 2.7D (2004-2007), V6/V8 petrol |
| Whining noise + oil pressure warning | Sludge-blocked oil pickup screen (often due to infrequent oil changes) | Sump removed, pickup screen cleaned, full oil system flush, PCV upgraded | All S-TYPE engines, especially high-mileage or short-trip vehicles |
| Supercharger whine fading (S-TYPE R) | Worn supercharger clutch or oil seal failure | Supercharger clutch and seals replaced; oil feed lines flushed | S-TYPE R (2002-2007) |
| Excessive oil consumption (>1L/1,000 miles) | Worn piston rings or valve stem seals | Full engine rebuild with Mahle pistons and Elring seals; compression test performed | V6 and V8 models, particularly post-100,000 miles |
Don't guess - diagnose. Book a free engine assessment and get a no-obligation, VIN-specific repair plan from Jaguar S-TYPE engine specialists based in Essex (near Chelmsford and Romford). We offer UK-wide vehicle collection so your executive saloon can be repaired correctly - first time, every time.