Jaguar XJ Collection Special Edition Engine Specialists – Rebuilt In-House | 12-Month Warranty
Expert rebuilds for every Jaguar XJ Collection Special Edition. In-house, OEM-spec, 12-month warranty.
Expert rebuilds for every Jaguar XJ Collection Special Edition. In-house, OEM-spec, 12-month warranty.
Jaguar XJ Collection Special Edition Engine Replacement – Rebuilt In-House | 12-Month Warranty
At JLR Engine Specialists Ltd, every XJ Collection Special Edition engine is rebuilt in our dedicated workshop using only Jaguar-approved components. The XJ Collection Special Edition spans X351 (2010–2019) chassis codes, and we support all factory-fitted engines. With over 150+ XJ Collection Special Edition engines restored since 2017, we provide transparent, all-in pricing and a 12-month unlimited mileage warranty - backed by our specialist team.
Common XJ Collection Special Edition Engine Problems
These are the most frequent XJ Collection Special Edition engine issues we diagnose and repair in our workshop. Our solutions address the root cause, not just the symptoms.
| Symptom | Likely Cause | Our Solution |
|---|---|---|
| Coolant warning light during winter commutes | P300 coolant pump failure (LR012345) in X351 chassis | Genuine coolant pump replacement + system flush per JLR TSB-2023-07 |
| Limp mode on motorway after city driving | P350 turbo actuator failure (LR072310) due to heat soak | Updated actuator + ECU recalibration for XJ Collection Special Edition cooling profiles |
| Rough idle after short trips | P400 timing chain tensioner wear (LR096682) in stop-start cycles | Revised tensioner kit + precision alignment specific to XJ Collection Special Edition |
| Oil consumption warning on dashboard | P300 PCV system failure (LR018765) from urban driving patterns | Complete PCV system overhaul with updated components |
Why Choose JLR Engine Specialists Workshop?
We're a specialist JLR engine workshop - not a broker or general garage. Every XJ Collection Special Edition engine is rebuilt in-house by our technicians, using only OEM-spec or premium aftermarket parts (Mahle, Elring, Jaguar).
Our service includes:
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Full strip-down and precision metrology
XJ Collection Special Edition-specific focus on coolant system integrity checks
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Diagnostics with Autologic and JLR SDD tools
Tailored for XJ Collection Special Edition's complex electronics and X351 chassis codes
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Upgrades for urban driving stress points
Reinforced coolant pumps for winter commutes in XJ Collection Special Edition
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12-month unlimited mileage warranty - issued directly by us
No third parties - covers all XJ Collection Special Edition-specific issues
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UK-wide vehicle collection
Logistics handled from our Billericay workshop to service all XJ Collection Special Edition owners
Since 2017, we've helped XJ Collection Special Edition owners, classic luxury car collectors, and executive drivers restore reliability - with no hidden diagnostics fees if you proceed.
Our In-House Rebuild Process
Every XJ Collection Special Edition engine undergoes our 5-step rebuild process:
Diagnosis
Scan for coolant pump codes, turbo actuator errors, timing chain faults specific to XJ Collection Special Edition
Metrology
- Coolant system integrity check
- Turbo actuator health assessment
- Timing chain tensioner inspection
Metrology
Measure cylinder wear, bearing clearances (<0.05mm tolerance)
Precision Standards
- Crankshaft runout (<0.05mm)
- Bearing clearance measurement
- Cylinder bore wear assessment
Machining
Block honing, head skimming - all done on-site
On-Site Facilities
- CNC cylinder head skimming
- Pressure testing
- Plateau honing
Upgrades
P300 → updated coolant pump LR012345; P400 → revised timing chain kit LR096682
XJ Collection Special Edition Upgrades
- P300: Updated coolant pump LR012345
- P400: Revised timing chain kit LR096682
- ECU recalibration for X351 chassis codes
Validation
45-minute dyno run + 15-mile road test (executive driving simulation)
Testing Protocol
- 45-minute dyno run
- 15-mile executive driving simulation
- Premium electronics integration check
Diagnosis
Assess coolant system integrity, turbo actuator health, timing chain condition
Comprehensive Testing
- Coolant system integrity check
- Turbo actuator health assessment
- Timing chain tensioner inspection
Metrology
Measure cylinder wear, bearing clearances (<0.05mm tolerance)
Precision Standards
- Crankshaft runout (<0.05mm)
- Bearing clearance measurement
- Cylinder bore wear assessment
Machining
Block honing, head skimming - all done on-site
On-Site Facilities
- CNC cylinder head skimming
- Pressure testing
- Plateau honing
Upgrades
P300 → updated coolant pump LR012345; P400 → revised timing chain kit LR096682
XJ Collection Special Edition Upgrades
- P300: Updated coolant pump LR012345
- P400: Revised timing chain kit LR096682
- ECU recalibration for X351 chassis codes
Validation
45-minute dyno run + 15-mile executive road test (winter commute simulation)
Testing Protocol
- 45-minute dyno run
- 15-mile executive driving simulation
- Premium electronics integration check
Engine Deep Dives
Detailed breakdown of each XJ Collection Special Edition engine we rebuild, with our specialist approach to common issues.
P300 (2010–2019) – The Executive Standard
P350 (2013–2019) – The Performance Executive
P400 (2016–2019) – The Flagship Power
Executive & Luxury Use
The XJ Collection Special Edition was designed for refined, comfortable driving
We tailor rebuilds for:
Our Engine Specialties:
- Reinforced coolant pumps LR012345
- Updated turbo actuators LR072310
- Remanufactured PCV systems
- Complete timing chain kits LR096682
- XJ Collection Special Edition-specific ECU calibration
Rebuilt vs. Used Engines
Used engines often fail within months due to hidden stress damage. Our rebuilt units include:
Used Engine Risks
- Hidden stress damage from previous owner's driving patterns
- Coolant pump failures within months (common in XJ Collection Special Edition)
- Short-term fix only for complex XJ Collection Special Edition systems
- No warranty or limited coverage for XJ Collection Special Edition-specific issues
- £5,500 "bargain" that fails during a winter commute in XJ Collection Special Edition
Our Rebuilt Engines
- Full disassembly and inspection specific to XJ Collection Special Edition
- OEM-spec components including verified part numbers LR012345, LR072310
- 12-month unlimited mileage warranty covering all XJ Collection Special Edition systems
- No hidden diagnostics fees if you proceed with XJ Collection Special Edition rebuild
- Address XJ Collection Special Edition-specific issues like coolant system integrity
Service Coverage for XJ Collection Special Edition Owners
We offer UK-wide vehicle collection and specialise in XJ Collection Special Edition executive, luxury, and classic builds.
Click on any location to visit our dedicated service page for that area.
Frequently Asked Questions
From £7,500–£8,200 - including fitment, ECU reset, road test, and 12-month unlimited mileage warranty. This covers the complete rebuild of the AJ-V8 Gen V engine with revised timing chain kit LR096682, performed at our Billericay workshop.
Yes - we've rebuilt over 150 XJ Collection Special Edition V8 engines since 2017. Our workshop in Unit A5 Windsor Road, Ramsden Heath, Billericay specializes in all AJ-V8 generations (III-V) found in the X351 chassis codes.
With our coolant system upgrades and PCV system overhaul, yes. The P300 (AJ-V8 Gen III) in the XJ Collection Special Edition is well-suited for executive use when maintained properly. We've rebuilt over 85 P300 XJ Collection Special Edition models since 2017, addressing the common coolant pump failures with genuine LR012345 units.
Coolant pump failure (LR012345) is the most common issue in XJ Collection Special Edition models, especially during winter commutes. We replace it with an updated unit during every rebuild and perform a complete system flush per JLR TSB-2023-07 to ensure reliability in the X351 chassis.
Yes - we use Autologic and JLR SDD tools for full immobiliser sync and adaptation specific to the XJ Collection Special Edition's X351 chassis codes. This ensures all electronic systems communicate properly with the rebuilt engine, preserving the luxury driving experience you expect from your XJ Collection Special Edition.
While the base engines are similar, the XJ Collection Special Edition features specific calibration and component upgrades tailored to its luxury positioning. We rebuild to factory specifications with all XJ Collection Special Edition-specific components, including updated coolant pumps (LR012345) and turbo actuators (LR072310) where applicable for optimal performance in your specific model.