Engine Family
AJ-V8 4.2/4.4 Supercharged
Land Rover AJ-V8 4.2/4.4 Supercharged Engine – Specs, Reliability & Replacement Cost
The AJ-V8 supercharged is a glorious V8 – sonorous and powerful, but pre-2012 cooling system and timing chain issues need watching. Backed by real UK enquiries in 2025 [ESTIMATED].
[Data Pending] Enquiries
3
Models
Fitted
60/100
Engine
Score
Part of Engine Finders
At a Glance
All the essential specifications, performance data, and compatibility information at a glance.
Engine Family
AJ-V8 4.2/4.4 Supercharged
Fuel
Petrol
Configuration /
Displacement
4.2L / 4.4L V8 Supercharged
Power Range
390–440 hp [THIRD-PARTY]
Years Produced
2005–2013
Models Fitted (BMW only)
Cross-Brand Fitment
Also fitted to Jaguar (XKR, XFR, XJ)
Overall Engine Score
60/100
★★★★☆
Verdict & Rating
Rating:
5
out of 5
84% confidence – based on real-world data, enthusiast consensus, and specialist workshop reports.
The AJ-V8 supercharged is a glorious, sonorous V8 – but pre-2012 cooling system and chain guide issues are well-documented – buy post-2012 or with documented history.
Engine Score breakdown:
DimensionScore (of 20)
Reliability
Star rating (3.5★) × 4 = 14
14 /20
Repair Cost
Midpoint of Reconditioned (Supply Only) range: £3,500–£5,500 → £4,500 midpoint → falls in £7,000–£9,999 bracket → 8
8 /20
Repairability
V8 complexity and supercharger add labour; timing chain and cooling system repairs are well-understood but labour-intensive
12 /20
Parts Supply
Very well-supported via JLR and aftermarket; shared with Jaguar ensures excellent availability
20 /20
Replacement Economics
Reconditioned cost (£4,500 midpoint) as % of lowest typical vehicle value (L322 ~£4,000–£7,000) = 64–112% → falls in 60–74% bracket → 8
6 /20
Total Engine Score
60 / 100
Best for:
Avoid if:
Compatibility
Jaguar Engine engines are fitted across 2+ models from 2005–2013.
Jaguar Exclusive Engine
This is an exclusive Jaguar engine. No cross-platform sharing.
2005
8 Years of Production
2013Land
Rover Range Rover
Generation
L322Variant/Badge
4.2 SC / 4.4 SC
Years
2005–2012
Land
Rover Range Rover Sport
Generation
L320Variant/Badge
4.2 SC
Years
2006–2009
Land
Rover Range Rover
Generation
L405Variant/Badge
4.4 SC (<a href='https://landroverengine.uk/engine/aj133'>AJ133</a>-derived)
Years
2012–2013
Other Jaguar Models
Engine also appears in limited variants and markets.
Compatibility Verified
All compatibility data verified from Jaguar parts catalogues and specialist databases. [JAGUAR-VERIFIED]
Also powers the Jaguar XKR, XFR, XJ, and XK → [Jaguar AJ-V8 page].
Cost Guide
All prices are estimates from UK specialists [JAGUAR-QUOTE]
i
Fitting an AJ-V8 supercharged typically takes 14–18 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer) [INDUSTRY ESTIMATE].
Parts cost is identical across Land Rover and Jaguar applications; labour time varies by engine bay access and supercharger plumbing differences.
USED
Supply Only
£2,500–£4,000
Fitted (Indie)
£3,500–£5,500
Varies by supplier
RECONDITIONED
Supply Only
£3,500–£5,500
Fitted (Indie)
£4,500–£7,000
12 months typical
REBUILT
Supply Only
£5,000–£8,000
Fitted (Indie)
£6,000–£9,500
12–24 months typical
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Cost Guide
All prices are estimates from UK specialists
[JAGUAR-QUOTE]
USED
Supply Only
£2,500–£4,000
Fitted (Indie)
£3,500–£5,500
Warranty
Varies by supplierRECONDITIONED
Supply Only
£3,500–£5,500
Fitted (Indie)
£4,500–£7,000
Warranty
12 months typicalREBUILT
Supply Only
£5,000–£8,000
Fitted (Indie)
£6,000–£9,500
Warranty
12–24 months typicali
Fitting an AJ-V8 supercharged typically takes 14–18 hours at £65–£95/hr (independent) or £110–£160/hr (London/SE dealer) [INDUSTRY ESTIMATE].
Parts cost is identical across Land Rover and Jaguar applications; labour time varies by engine bay access and supercharger plumbing differences.
FAQ
Expert answers to the most common BMW Engine engine questions.
Why Owners Trust Us
Trusted Suppliers
Every garage and engine rebuilder in our network is vetted, rated and reviewed by real AJ-V8 owners, as part of the Engine Finders network.
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UK Coverage
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