Range Rover 4.2 SC Engine ReplacementCompare Prices & Get Quotes
Get quotes today from trusted UK Range Rover 4.2 SC engine specialists. Compare prices on reconditioned, rebuilt and used engines to restore your L322's supercharged V8 performance and precision engineering.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
From £5,500 to £9,000 [ESTIMATED - using AJ133 5.0L V8 SC as proxy]
Used from £2,500 · Reconditioned from £4,000 · Common codes: AJ34S, AJ33S
From £2,500
Tested, bare/short engine
From £4,000
Rod bearings addressed, tested
From quote
Upgraded bearings, full teardown, revised valvetrain
Secure enquiry - no spam, no pressure. Genuine quotes only from vetted UK Range Rover 4.2 SC specialists.
3 Simple Steps3 Simple Stepsto Finding the Best Range Rover 4.2 SC Replacement Engineto Finding the Best Range Rover 4.2 SC Replacement Engine
Most replacements completed within 3-5 days.
Variant HistoryRange Rover 4.2 SC - Engine History & Specs at a Glance
Launched as the performance flagship of the facelifted L322 generation, the Range Rover 4.2 SC paired luxurious refinement with a potent supercharged V8, offering a significant power upgrade over the naturally aspirated 4.4L models.
Variant HistoryRange Rover 4.2 SC - Engine History & Specs at a Glance
Launched as the performance flagship of the facelifted L322 generation, the Range Rover 4.2 SC paired luxurious refinement with a potent supercharged V8, offering a significant power upgrade over the naturally aspirated 4.4L models.
Range Rover 4.2 SC
Fuel TypePetrol
Engine Size Range4.2L
Power Output Range390hp across the variant's historyEngine History Timeline
AJ34S (4.2L V8 Supercharged) 390hp, introduced in the L322 facelift, featuring an Eaton supercharger and revised engine management.
Minor calibration updates for improved throttle response and emissions compliance maintaining the 390hp output.
Production of the 4.2 SC ceased replaced by the new 5.0L Supercharged (AJ133) V8 in the subsequent L322 update and L405 generation.
Key Specs Snapshot
Fuel TypePetrolEngine Size Range4.2LPower Output Range390hp across the variant's historyYears Produced2005-2009Every engine fitted to the Range Rover 4.2 SC is covered below, with UK rebuilt pricing and known failure points.
Range Rover 4.2 SC Engine Codes - Specifications & Replacement CostRange Rover 4.2 SC Engine Codes - Specifications & Replacement Cost
4.2L Petrol Supercharged (2005-2009)
Power Output390hpYears Fitted2005-2009
Compatible Trim Levels
- Range Rover Vogue SE Supercharged
- Range Rover HSE Supercharged
Find your exact engine code, specs and UK replacement cost guide.
Used
Tested, ready-to-fit engine
£2,500-£4,500
Reconditioned
Addressed known issues, tested
£4,000-£6,500
Rebuilt
Full teardown, upgraded internals
£5,500-£9,000
Common Failure
Timing chain tensioner wear and coolant leaks from plastic crossover pipes are documented patterns in the Jaguar AJ-V8 supercharged family, typically emerging between 60,000-120,000 miles.
The 4.2L Supercharged V8 in the Range Rover 4.2 SC is a robust performance unit, but its complex forced-induction architecture and cooling systems require precise maintenance. Rebuilt engines through EnginesMarket include upgraded components addressing these original failure points, backed by a minimum 12-month unlimited-mileage warranty.
Why the Range Rover 4.2 SC AJ34S Requires Attention
Affected Vehicles
Range Rover 4.2 SC (AJ34S, 2005-2009)
Typical Failure Mileage
60,000-120,000 miles
Root Cause
The supercharged AJ-V8 family is susceptible to timing chain tensioner fatigue and supercharger isolator coupler wear over time, which can lead to rattling on cold starts and, if ignored, catastrophic internal damage.
Why It Happens
The supercharged AJ-V8 family is susceptible to timing chain tensioner fatigue and supercharger isolator coupler wear over time, which can lead to rattling on cold starts and, if ignored, catastrophic internal damage.
Dealer (parts + labour)
£300-£600
Specialist (parts + labour)
£200-£400
What it involves
Endoscope inspection of chain tensioner and supercharger coupler
Suitability
Recommended at 60k miles to catch early wear
1 - 2 daysDealer (parts + labour)
£3,500-£5,500
Specialist (parts + labour)
£2,500-£4,000
What it involves
Full chain, tensioner, guide, and coupler replacement
Suitability
Viable if the engine block and internals are undamaged
1 - 2 daysDealer (parts + labour)
£8,000-£12,000
Specialist (parts + labour)
£5,500-£9,000 [ESTIMATED - using AJ133 5.0L V8 SC as proxy]
What it involves
Supply & fit of a rebuilt 4.2L V8 with upgraded tensioner components and 12-month warranty
Suitability
The right call if catastrophic failure has occurred or the block is compromised
1 - 2 daysAll prices are indicative UK market ranges based on current UK specialist supplier data.| Repair Tier | Dealer (Parts + Labour) | Specialist (Parts + Labour) | What It Involves | Suitability | Estimated Time |
|---|---|---|---|---|---|
 Preventative Inspection Minor | £300-£600 | £200-£400 | Endoscope inspection of chain tensioner and supercharger coupler | Recommended at 60k miles to catch early wear | 1 - 2 days |
 Timing Chain & Coupler Kit Replacement Best Value | £3,500-£5,500 | £2,500-£4,000 | Full chain, tensioner, guide, and coupler replacement | Viable if the engine block and internals are undamaged | 1 - 2 days |
Full Replacement - rebuilt/reconditioned engine Best Value | £8,000-£12,000 | £5,500-£9,000 [ESTIMATED - using AJ133 5.0L V8 SC as proxy] | Supply & fit of a rebuilt 4.2L V8 with upgraded tensioner components and 12-month warranty | The right call if catastrophic failure has occurred or the block is compromised | 1 - 2 days |
Vehicle Value Check
Vehicle Value Check
A classic Range Rover 4.2 SC (L322) currently holds a UK market value of £4,000 to £12,000+ depending on condition, service history, and mileage [THIRD-PARTY]. At this valuation, a rebuilt engine replacement cost can represent a significant portion of the vehicle's value. If the lowest viable replacement cost exceeds approximately 60% of the vehicle's current market value, evaluate scrap value before committing.
Our Recommendation
Our Recommendation
If caught early, a specialist timing chain and supercharger coupler service is the most cost-effective route. However, if the engine has suffered catastrophic failure due to neglected chain wear or overheating, investing in a fully rebuilt unit with upgraded components is the only way to guarantee long-term reliability for this classic SUV.
Don't Let Engine Failure Write Off Your Range Rover 4.2 SC
Protect your classic investment with a fully rebuilt Range Rover 4.2 SC engine. Our network supplies units with upgraded components that address known failure points, backed by a minimum 12-month unlimited-mileage warranty and nationwide delivery. Avoid main dealer premiums by comparing transparent, itemised quotes from vetted UK specialists today.
Compare rebuilt AJ34S Range Rover 4.2 SC engine prices
12-Month Minimum
UK Specialists Vetted
Best Price GuidanceImportant Information
Important Information
"All prices are indicative UK market ranges based on historical quote data and repair requests from our network of engine specialists. Dealer pricing is estimated based on published main dealer labour rates and genuine OEM parts pricing. Specialist pricing reflects actual quote data from EnginesMarket's UK network. Actual costs vary depending on damage severity, vehicle condition, variant, and workshop location within the UK. Use our free comparison tool to get tailored quotes for your specific Range Rover 4.2 SC. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier."
Range Rover 4.2 SC Engine ReplacementFrequently Asked Questions
Question 1How much does a Range Rover 4.2 SC engine replacement cost-
A complete rebuilt Range Rover 4.2 SC engine typically costs between £5,500 and £9,000 for supply only [ESTIMATED - using AJ133 5.0L V8 SC as proxy].
- Used units start from around £2,500.
- Reconditioned units range from £4,000 to £6,500.
- Prices vary based on the specific AJ34S engine code and supplier.
Question 2What are the signs of timing chain failure in a Range Rover 4.2 SC-
Early warning signs of timing chain wear in the 4.2L supercharged V8 include a distinct rattling noise from the engine bay during cold starts.
- Check engine light or camshaft correlation fault codes.
- Rough idling or slight loss of performance.
- Metallic debris in the engine oil.
Question 3Is it worth replacing the engine in a classic Range Rover 4.2 SC-
Yes, for well-maintained examples. The Range Rover 4.2 SC is a highly capable classic luxury SUV with current market values ranging from £4,000 to over £12,000 [THIRD-PARTY].
- A rebuilt engine cost is a sensible fraction of the vehicle's total value if the chassis and electronics are solid.
- It preserves the car's heritage, performance, and resale value.
- Upgraded rebuilt units address known factory cooling and timing weaknesses.
Question 4How long does a Range Rover 4.2 SC engine supply and fit take-
A professional Range Rover 4.2 SC engine replacement typically takes 3 to 5 working days.
- Removal and preparation of the old unit takes 1-2 days.
- Fitting, calibration, and testing of the new rebuilt engine takes 2-3 days.
- Nationwide collection and delivery are arranged by the specialist.
Question 5Do rebuilt 4.2 SC engines include upgraded supercharger and cooling components-
Yes, reputable specialists rebuilding a Range Rover 4.2 SC engine will address known weak points.
- Plastic coolant crossover pipes are replaced with updated components.
- Timing chain tensioners and supercharger isolator couplers are inspected and upgraded as standard.
- This ensures the engine remains reliable under the thermal stress of supercharged operation.
Why Choose UsCompare Range Rover 4.2 SCEngine PricesToday
100+ Range Rover 4.2 SC engines supplied through our network
12-Month Warranty on every rebuilt Range Rover 4.2 SC engine
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