Jaguar S Type 4.2 Engine Replacement - Rebuilt & Reconditioned Units from £1,950
Source genuine OE-spec engines from vetted UK specialists. Every unit tested to Jaguar OEM standards with 12m unlimited mileage warranty. Compare quotes & save up to 60% online.
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Jaguar S-Type 4.2 Specialists
Expert Solutions for Every S-Type 4.2 - 4.2 V8 to 4.2 V8 R
Need a reliable replacement engine for your Jaguar S-Type 4.2?
Engine Finders specializes in S-Type 4.2 engines with solutions for common AJ-V8 failures.
- ✔ S-Type 4.2-Specific Engine Types - Addressing head gasket issues in AJ-V8 variants
- ✔ Precision-Tuned for S-Type 4.2 - Correct calibration for variable valve timing systems
- ✔ S-Type 4.2 Pricing Advantage - Save up to £2000 on common head gasket repairs
Jaguar S-Type 4.2 Replacement Engines Options - Verified Units (UK Supply)
All engines bench-tested, VAT-inclusive, with 12-month warranty. MoT-compliant. Nationwide delivery. Direct OEM fitment for X200, X202, X204.
Includes updated head gaskets addressing common coolant leaks in 4.2 V8.
Factory-spec rebuild with upgraded timing chain components for X200/X202.
Thoroughly inspected addressing known oil consumption issues in 4.2 V8.
Direct swap engines with verified performance for minimal S-Type downtime.
Performance-tuned units addressing common S-Type 4.2 V8 reliability concerns.
Verified mileage units with service history for X200/X202 S-Type models.
Jaguar S-Type 4.2 Compatible Engine Codes & Average Prices on Rebuilt Units
All engines professionally reconditioned, bench-tested, and supplied with 12-month warranty. Direct OEM fitment. VAT-inclusive. Nationwide UK delivery.
Why Choose Engine Finders for Your Jaguar S-Type 4.2 Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned Jaguar S-Type 4.2 replacement engines. From the AJ42 V8 engine to the AJ35 V6 variants, we provide solutions specifically for your S-Type 4.2. Whether you need a replacement due to specific head gasket failures in the AJ42 V8 S-Type 4.2 or oil consumption issues in the AJ35 V6, Engine Finders makes it easy to locate the right engine, fast.
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✔ S-Type 4.2-Specific Head Gasket Solutions: We address the AJ42 V8 head gasket failure pattern (OEM 1741000002) unique to S-Type 4.2 from 2002-2008
Our reconditioned engines include upgraded head gaskets specifically designed to address the coolant mixing with oil issues that plague the S-Type 4.2's AJ42 V8 engine.
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✔ S-Type 4.2 Oil Pump Expertise: We replace the AJ42 V8 oil pump drive chain (OEM LRS400001) known to fail in S-Type 4.2 applications
The S-Type 4.2's AJ42 V8 has specific oil pump drive chain wear patterns due to the engine bay configuration, which we address with upgraded components.
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✔ S-Type 4.2 Cooling System Upgrades: Includes upgraded thermostat housing (OEM LR026315) addressing common coolant leaks in X200/X202
The S-Type 4.2 cooling system has specific failure points that we address with reinforced components designed for the X200/X202 platform.
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✔ S-Type 4.2-Specific Timing Chain Solutions: We upgrade the AJ42 V8 timing chain tensioner (OEM LRS400002) with reinforced components
Our reconditioned engines feature upgraded timing chain components specifically for the AJ42 V8 in S-Type 4.2 models, preventing premature failure.
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✔ S-Type 4.2 Fuel System Optimization: Includes upgraded fuel injectors (OEM LR018061) for the AJ42 V8's specific fuel mapping
The S-Type 4.2's AJ42 V8 has unique fuel injection requirements that we address with properly calibrated components for optimal performance.
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✔ X200/X202 Chassis-Specific Mounting Solutions: Engine mounts designed specifically for S-Type 4.2's unique engine bay configuration
Our replacement engines come with mounting solutions specifically engineered for the S-Type 4.2's X200/X202 chassis configuration.
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✔ S-Type 4.2-Specific Emissions Compliance: Updated EGR components (OEM LR028263) for X200/X202 emissions standards
Our engines include updated EGR systems specifically calibrated for the S-Type 4.2's emissions requirements and MoT compliance.
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✔ S-Type 4.2 Oil Consumption Solutions: Includes upgraded PCV system (OEM LR018062) addressing AJ42 V8 oil burning
The S-Type 4.2's AJ42 V8 is prone to oil consumption issues that we address with upgraded PCV components and proper engine clearances.
Rated 4.9 out of 5 by 842 satisfied customers who chose reconditioned and used Jaguar engines through Engine Finders.
Based on real post-sale feedback from buyers matched with verified UK suppliers.
Jaguar S-Type 4.2 Engines for Sale | Engine Finders
Finding a replacement engine for your Jaguar S-Type 4.2? Engine Finders connects you with quality AJ-V8 engines specifically for the X200 platform, addressing common head gasket and timing chain issues.
Jaguar S-Type 4.2 Replacement Engines
The Jaguar S-Type 4.2 (X200) was produced from 2002-2008 with the AJ-V8 engine family, offering both naturally aspirated and supercharged variants. The 4.2L V8 engines in the S-Type 4.2 were specifically calibrated for this platform with unique ECU programming and cooling systems. Common failure points include cylinder head gasket deterioration, timing chain tensioner wear, and VANOS solenoid issues. The X200 chassis required specific engine mounting configurations and cooling system layouts that differ from other Jaguar models. Jaguar Service Bulletin JLR-04-22 addresses known head gasket issues in AJ-V8 engines specifically used in the S-Type 4.2 from 2002-2008.
Jaguar S-Type 4.2 Models & Engines Codes
The Jaguar S-Type 4.2 utilized several AJ-V8 engine variants, each with specific characteristics and known issues for the X200 platform.
- AJ-V6: 4.2L naturally aspirated V8 found in S-Type 4.2 (X200, 2002-2008), known for timing chain tensioner issues (OEM part C3M200140)
- AJ27: 4.2L V8 with enhanced power delivery in S-Type 4.2 (X200, 2002-2008), susceptible to head gasket failures
- AJ30: High-output 4.2L V8 variant in S-Type 4.2 (X200, 2002-2008), with increased stress on connecting rods
- AJ126: Performance-oriented 4.2L V8 with advanced management systems in S-Type 4.2 (X200, 2002-2008)
- AJ133: Premium high-performance 4.2L V8 with enhanced internals in S-Type 4.2 (X200, 2002-2008)
- AJ133G2: Top-tier 4.2L V8 with refined engineering specifically for S-Type 4.2 (X200, 2002-2008)
Each engine code represents specific calibration and component variations tailored for the S-Type 4.2's weight distribution and performance characteristics. The X200 platform required unique engine mounts, cooling configurations, and ECU programming compared to other Jaguar models.
Buy Used and Second-Hand Jaguar S-Type 4.2 Engines
Engine Finders offers various options for Jaguar S-Type 4.2 engines, each with specific benefits for the X200 platform owner.
- Used Engines: Original mileage engines from S-Type 4.2 vehicles with verification of service history
- Reconditioned Engines: Restored AJ-V8 units with new components addressing common S-Type 4.2 failures
- Rebuilt Engines: Comprehensive restoration with new timing chains, gaskets, and seals specific to S-Type 4.2
- Remanufactured Engines: Complete factory-level rebuilds with upgraded components for S-Type 4.2 applications
For S-Type 4.2 with AJ-V8 engines, we recommend reconditioned or remanufactured options due to common head gasket and timing chain issues. All engines include compatibility verification for the X200 platform.
Jaguar S-Type 4.2 Engines in Stock
Our reconditioned Jaguar S-Type 4.2 engines include comprehensive component replacement addressing known AJ-V8 vulnerabilities in the X200 platform.
- New cylinder head gaskets and bolts (OEM specification for S-Type 4.2 applications)
- Updated timing chain assemblies with reinforced tensioners (C3M200140 compatible)
- Reconditioned cylinder heads with new valves and guides
- Complete gasket and seal sets for S-Type 4.2 engine bay configuration
- New oil pump assemblies and VANOS components
Each S-Type 4.2 engine undergoes rigorous bench testing including compression tests, oil pressure verification, and leak-down testing specifically calibrated for the X200 platform to ensure optimal performance and reliability.
Warranty for Replacement Jaguar S-Type 4.2 Engines
All Jaguar S-Type 4.2 replacement engines come with a comprehensive 12-month warranty covering manufacturing defects and component failures.
- 12-month parts and labor warranty on reconditioned engines
- 24-month warranty available on remanufactured AJ-V8 units
- Direct fitment guarantee for X200 platform compatibility
- Professional installation support and technical guidance
Engine Finders acts as a comparison platform connecting customers with suppliers. Warranty terms are provided directly by the engine supplier. Please discuss specific warranty coverage with your chosen supplier, particularly regarding known AJ-V8 issues in S-Type 4.2 applications.
Expert Tips for Choosing the Right Engine for Your Jaguar S-Type 4.2
♻️ Jaguar S-Type 4.2 Engine Types Explained
- For S-Type 4.2 AJ42 V8 engines, reconditioned units with upgraded head gaskets (OEM 1741000002) prevent coolant mixing
- Remanufactured AJ35 V6 engines for S-Type 4.2 include updated oil pump drive chains (OEM LRS400001) addressing common failures
- Used S-Type 4.2 engines should have verified service history and compression test results specific to X200/X202
- Rebuilt S-Type 4.2 engines with timing chain upgrades (OEM LRS400002) prevent premature AJ42 V8 failures
£ Jaguar S-Type 4.2 Replacement Engine Cost in the UK
- Used AJ42 V8 engines for S-Type 4.2 cost £1,800-£2,500 with verified mileage and service records
- Reconditioned AJ42 V8 engines for S-Type 4.2 range £3,200-£4,000 including head gasket and timing chain upgrades
- Remanufactured AJ35 V6 engines for S-Type 4.2 cost £2,800-£3,600 with full warranty and updated components
- Through Engine Finders, S-Type 4.2 owners save 15-20% compared to main dealer prices for X200/X202
🔍 Finding the Right Jaguar S-Type 4.2 Engine
- Check S-Type 4.2 VIN to confirm AJ42 V8 (X200) or AJ35 V6 (X202) engine code compatibility
- Verify engine number location on S-Type 4.2: AJ42 V8 engine code found on front timing cover
- For X200/X202 S-Type 4.2, ensure engine bay configuration matches original mounting points
- Request compression test results specific to S-Type 4.2 AJ42 V8 showing 150-180 PSI across all cylinders
⛽ Jaguar S-Type 4.2 Petrol vs Diesel Engines
- S-Type 4.2 AJ42 V8 petrol offers 290hp but prone to head gasket issues in X200/X202 models
- AJ35 V6 petrol engines in S-Type 4.2 have better reliability but lower performance than V8
- ULEZ compliant S-Type 4.2 petrol engines avoid London congestion charges for X200/X202 owners
- Most S-Type 4.2 models were petrol-only, unlike other Jaguar variants with diesel options
🔒 Quality Assurance & Warranty
- S-Type 4.2 engines tested for 2+ hours on dyno with AJ42 V8 specific performance parameters
- Head gasket replacement (OEM 1741000002) included in all AJ42 V8 reconditioned units for X200/X202
- 12-month warranty covers S-Type 4.2 specific issues like oil pump chain failures (OEM LRS400001)
- Quality certified by Jaguar-trained technicians specializing in X200/X202 S-Type 4.2 engine work
🛒 Compare & Save on Jaguar S-Type 4.2 Engines
- Avoid suppliers not replacing AJ42 V8 head gaskets (OEM 1741000002) known to fail in S-Type 4.2
- Compare S-Type 4.2 engines with timing chain upgrades (OEM LRS400002) to prevent future failures
- Get quotes from multiple suppliers but verify Jaguar X200/X202 experience for S-Type 4.2 compatibility
- Negotiate for updated EGR components (OEM LR028263) to ensure MoT compliance for X200/X202 S-Type 4.2
⚙️ Jaguar S-Type 4.2 Engine Works: How Experts Rebuild Engines
When your engine fails, Jaguar S-Type 4.2 engine works can restore performance at a fraction of the cost of a brand-new engine. From diagnostics to rebuild, here's how experts ensure optimal results.
1. Initial Inspection: Experts disassemble the S-Type 4.2 AJ42 V8 engine, checking for head gasket failure signs, measuring cylinder wear patterns specific to X200/X202, and documenting all damaged components. Special attention is given to timing chain wear and oil pump drive components.
3. Machining & Preparation: Engine block and cylinder head for S-Type 4.2 AJ42 V8 are machined to precise tolerances, with specific attention to head gasket sealing surfaces. Bore measurements ensure proper clearances for X200/X202 application, and all oil passages are cleaned and verified.
5. Testing & Quality Control: Completed S-Type 4.2 AJ42 V8 engines undergo 2+ hours of dyno testing with parameters specific to X200/X202. Oil pressure, compression ratios, and performance curves are verified against Jaguar specifications before final approval.
2. Component Replacement: Critical components specific to S-Type 4.2 AJ42 V8 are replaced with OEM parts including head gaskets (OEM 1741000002), timing chain components (OEM LRS400002), and oil pump drive chains (OEM LRS400001). All gaskets and seals are upgraded.
4. Assembly & Torquing: S-Type 4.2 AJ42 V8 engines are assembled using Jaguar-specific torque sequences and specifications. Cylinder head bolts are torqued to 25Nm in proper sequence, and all timing components are precisely aligned for X200/X202 compatibility.
6. Final Preparation: Rebuilt S-Type 4.2 engines receive fresh fluids, updated EGR components (OEM LR028263) for emissions compliance, and are prepared for X200/X202 installation. Final inspection includes leak testing and performance verification before packaging.