Land RoverLAND ROVER GARAGELAND ROVER ENGINE SPECIALISTS

Land Rover V8 Supercharged Repair (AJ133)

Specialist timing chain replacement for the 5.0L supercharged V8 — fitted in our Essex workshop, tested on the road before collection.

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What This Service Involves

The AJ133 is a 5.0-litre supercharged V8 used across the Land Rover range — in the Range Rover, Range Rover Sport, Defender, and Velar. Over time, the timing chain system can wear, leading to noise, reduced performance, or in some cases, failure. We replace the primary and lower timing chains, guide rails, tensioners, and cam phaser actuators as a complete system, using revised JLR-spec parts.

Because the supercharger sits directly on top of the engine, accessing the timing chain requires careful disassembly — we remove the supercharger, intake manifold, radiator, and front timing cover to reach the chain drive. Every job is timed to JLR manufacturer specifications using specialist locking tools, and the engine is road-tested before collection.

Read more about our engine rebuild process →

Starting price £5,500 + VAT · includes new timing chain kit, tensioners, guides, gaskets, and road test

Pricing disclaimer

AJ133 Timing Chain Replacement — In Our Workshop

01 Vehicle in the bay, prepped for supercharger and timing cover removal
02 Supercharger and intake manifold removed to access timing chain drive
03 Front timing cover removed — primary and lower chains exposed
04 New timing chain kit — revised JLR tensioners and guide rails
05 JLR specialist timing tooling — camshaft alignment, flywheel locking, and angle-torque
06 Setting timing to JLR specifications using camshaft locking tools
07 Cam phaser actuators removed, cleaned, and inspected before reinstallation
08 Road test completed — timing verified, engine at operating temperature

Applicable Models & Engines

The AJ133 supercharged V8 was used across several Land Rover models. If your vehicle has a 5.0L supercharged V8, this service applies.

Range Rover

Range Rover Sport

Range Rover Velar

Defender

Not sure if your vehicle is affected? Get a quote or contact us for a compatibility check.

Our Process — AJ133 Timing Chain Replacement

1 Inspection & Quote We inspect the engine, confirm the AJ133 timing chain service is required, and provide a fixed-price quote.
2 Recovery & Arrival We recover the vehicle to our Essex workshop — nationwide recovery available.
3 Supercharger & Timing Cover Removal We remove the supercharger, intake manifold, radiator, and front timing cover to access the chain drive.
4 Timing Chain & Component Replacement We replace the primary and lower timing chains, guide rails, tensioners, and cam phaser actuators with revised JLR parts.
5 Reassembly & Timing Set We reassemble the engine, set timing to JLR manufacturer specifications using specialist locking tools, and fit all new gaskets and seals.
6 Road Test & Handover We run the engine to temperature, verify timing with diagnostic equipment, perform a road test, and return the vehicle to you.
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Why Choose Land Rover Garage

  • Based in Essex — we’ve been rebuilding Land Rover engines since 2009
  • Fixed-price quotes — no hidden costs, no surprises
  • 12-month, unlimited-mileage warranty on every rebuild
  • We use revised JLR timing chain components, not generic aftermarket
  • Specialist tooling and JLR diagnostic equipment (SDD / Pathfinder)
  • Road test completed before collection — we don’t sign off until it’s right

Learn more about our workshop →

Recent AJ133 Rebuilds

01 Range Rover Sport SVR — timing chain replaced, road test passed
02 Defender P525 — supercharger refitted, timing set, ready for collection
03 Velar SVAutobiography — full timing chain service, road-tested and verified

How It Works — From Quote to Collection

📞 Call or quote online We discuss your vehicle and confirm the AJ133 timing chain service is required.
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🔧 Inspection & fixed quote We inspect the engine and provide a fixed-price quote — no surprises.
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🚛 Recovery We recover your vehicle to our Essex workshop, nationwide.
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⚙️ Timing chain replacement We complete the AJ133 timing chain service using revised JLR parts.
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✅ Road test & collection We road-test the vehicle and return it to you with a 12-month warranty.

Related Services

FAQs — AJ133 Timing Chain Repair

What does the AJ133 timing chain service include?

We replace the primary and lower timing chains, guide rails, tensioners (using revised JLR parts), and cam phaser actuators. We also fit new gaskets and seals, and set timing to JLR manufacturer specifications.

Why does the supercharger need to be removed?

The supercharger sits directly on top of the engine on the AJ133. It must be removed to access the timing chain drive, so we remove it carefully and refit it with new gaskets and seals.

How long does the repair take?

Typically 3–5 working days from arrival at the workshop, depending on parts availability and the condition of the engine when opened.

What warranty do you offer?

We offer a 12-month, unlimited-mileage warranty on all AJ133 timing chain repairs we complete.

Do you use genuine JLR parts?

We use revised JLR timing chain components, including the updated tensioners and guide rails, not generic aftermarket parts.