

Land Rover Discovery Si6Engine Rebuild— From £2,200
Specialist Land Rover Discovery Si6 engine rebuilds and replacements, with registration-based engine matching, nationwide recovery and a 12-month unlimited-mileage warranty
Rated Land Rover Engine Specialists — 1,800+ Engines Rebuilt
Specialist technicians with 10-15 years of experience
12 Month Unlimited-Mileage Warranty
Nationwide Recovery
Free Engine Matching by Registration
Petrol V6 Specialists

Your Land Rover Discovery Si6 Engine

Vehicle
Land Rover Discovery Si6
Model
Discovery
Variant
Si6
Fuel
Petrol
Engine
AJ-V6
Capacity
3.0L V6
Generations
D3/L319 (2004–2009) · D4/L319 facelift (2009–2016)
Rebuild From
£2,200
Not sure which engine you have?
The Discovery Si6 uses the AJ-V6 3.0-litre inline-six mild-hybrid engine — enter your registration below and we'll confirm your exact spec before you get a quote.
DVLA & VIN verified
100% secure & private
No obligation quote
Land Rover Discovery Si6Engine Rebuild Price
Starting From £2,200

Engine Code
AJ-V6Rebuild From
£2,200

Generation
Exact price depends on condition and parts required — submit your reg for a fixed-price quote.
Land Rover Discovery Si6 Oil Leaks & Coolant System Wear (AJ-V6 I6)
The AJ-V6 is a sophisticated 3.0-litre inline-six with an integrated starter-generator and electric auxiliary compressor — a more modern and efficient design than the older AJ-V6 V6. We replace timing chains, bearings, water pump and gaskets as standard on every AJ-V6 rebuild.
Because the Discovery Si6 uses a completely different engine family from the V8 M178 fitted to the Discovery 63 and GT 63 S, parts and rebuild specifications don't cross over between them.
Source: Established AJ-V6 specialist pattern — timing chain, bearing and gasket wear across integrated-starter-generator inline-six units.

Land Rover Discovery Si6ENGINE OPTIONS
Every Discovery Si6 is different. That's why we offer the right solution for your engine, your car and your budget.
REBUILDING YOUR DISCOVERY SI6 ENGINE
Most engine suppliers sell you a used engine of unknown history and hope it matches. We rebuild the engine your Discovery Si6 already has instead — strip it down, pressure-test it, and replace every worn or damaged component (timing chains, bearings, water pump, gaskets) with updated OEM parts. You get a near-new engine with a 12-month unlimited-mileage warranty, without the compatibility risk of an unknown used unit. This is the option most Discovery owners choose, and it's the one we'd recommend for most situations.
RECONDITIONED DISCOVERY SI6 ENGINES
"Reconditioned" is the term many owners search for when they mean the same thing as a rebuild — a full strip-down, inspection, and replacement of worn parts rather than a straight swap. If that's what you're after, our rebuild service is exactly that.
REFURBISHED DISCOVERY SI6 ENGINES
Similarly, "refurbished" often describes the same process from a different angle — restoring your existing engine to full working condition rather than replacing it outright. Our rebuild covers this.
REMANUFACTURED DISCOVERY SI6 ENGINES
Some owners specifically search for a "remanufactured" engine, expecting a unit rebuilt to original specification with updated components. That's consistent with what our rebuild service delivers.
REPLACEMENT DISCOVERY SI6 ENGINES
If your existing engine is beyond economical repair, we also offer full engine replacement and fitting — sourced and fitted by our team, with the same 12-month warranty.
USED DISCOVERY SI6 ENGINES
In some cases, a matched low-mileage used engine is the right call — particularly if you need your car back on the road quickly and your existing engine's damage is extensive. We can source and fit these too, though most owners who ask about used engines end up choosing a rebuild once they understand the compatibility risk a used unit carries. Enter your reg below and we'll talk you through both options honestly.
NOT SURE WHICH OPTION IS RIGHT FOR YOU?
Enter your registration below and we'll confirm your AJ-V6 and talk you through the best solution for your Discovery Si6, honestly.
Ask About Your OptionsOUR WORKSHOP
01RECOVERY COLLECTION
02AJ-V6 ENGINE STRIPPED FOR REBUILD INSPECTION
03VALVE COVERS & COOLANT COMPONENT WORK
04TECHNICIANS AT WORK
05ENGINE TESTING (RIG)
06COMPLETED & READY FOR REFIT
Real photos from our workshop — not stock imagery. This is what a genuine Land Rover Discovery Si6 rebuild looks like.
Land Rover Discovery Si6 ENGINE REBUILD PROCESS
WHAT MERCEDES Discovery Si6 OWNERS SAY
WE COVER YOUREXACT VEHICLE
Enter your registration below and we'll confirm your Land Rover Discovery Si6 has the AJ-V6, along with an exact rebuild price.
WHY MERCEDES Discovery Si6 OWNERS CHOOSE US
Engine matched using VIN or registration number
Genuine specialist workshop — not a broker
Specialist technicians with 10-15 years of experience
We don't swap your engine for an unknown used unit
Nationwide recovery, workshop rebuild
12 month unlimited-mileage warranty
All engine ancillaries serviced as part of the rebuild
Trade & public enquiries welcome
Dedicated advisor from quote to fit
OUR MOST RECENTMERCEDES RECOVERIES & REBUILDS
Real vehicles brought into our workshop. Open bonnets, stripped blocks, and cars ready for collection — this is what genuine engine work looks like.

Land Rover Discovery Si6
RECOVERY

Land Rover Discovery Si6
DIAGNOSTICS

Land Rover Discovery Si6
STRIPPED ENGINE

Land Rover Discovery Si6
TIMING CHAIN REPLACEMENT

Land Rover Discovery Si6
IN FOR REBUILD

Land Rover Discovery Si6
REBUILD IN PROGRESS
HOW IT WORKS
SEND YOURREGISTRATION
RECEIVE YOURFIXED-PRICE QUOTE
WE RECOVERYOUR CAR
REBUILD &REFIT
Most Discovery models are recovered within a few hours of booking. Most rebuilds are completed within 3-5 working days.
Workshop slots fill up fast — book your recovery today.

LOOKING FOR A USED ORREPLACEMENT ENGINEINSTEAD?
We supply low-mileage, VIN-matched used units too, and offer full replacement and fitting. However, most Discovery Si6 owners choose a rebuild once they realise it removes compatibility risk and works out more cost-effective over the life of the car.
Enter your reg below — we'll show you every option, honestly.
ABOUT THE Land Rover Discovery Si6 ENGINE

The Discovery Si6 is the petrol V6 variant of the Discovery 3 and Discovery 4 ranges, produced from 2004 to 2016. It uses the AJ-V6 — a 3.0-litre petrol V6 that was also used across other Jaguar Land Rover products of the same era. The Si6 badge was primarily used to differentiate it from the diesel TDV6 and SDV6 variants in the Discovery line-up. The engine remained consistent throughout both the D3 and D4 generations, with the same fundamental AJ-V6 design powering both.
We continue to rebuild and replace AJ-V6 engines for every Discovery Si6 on the road.
Land Rover Discovery Si6 ENGINE CODES
A 3.0-litre V6 petrol fitted to the Discovery Si6 from 2004 to 2016, across both the D3 and D4 generations. No specific known issue confirmed for this application — it's considered a generally reliable petrol V6. Check Your AJ-V6 Discovery Si6 → [link to quote form]
Check Your AJ-V6 Discovery Si6Land Rover Discovery Si6 ENGINE COMPATIBILITY

Because the Discovery Si6 uses the same AJ-V6 petrol engine across both the D3 and D4 generations, compatibility is straightforward — the same engine family was fitted throughout the entire 2004–2016 production run. Before we quote or supply anything, we confirm:
Your exact engine code (AJ-V6) via registration or VIN
Your generation (D3/L319 or D4/L319 facelift)
Drivetrain and ancillary specification
Any electronics or ECU considerations specific to your exact build
This is why we always start with your registration rather than a generic Discovery quote — it protects you from paying for parts that don't fit your actual car.
Land Rover Discovery Si6 APPLICATIONS BY GENERATION
Land Rover Discovery Si6 ENGINES BY YEAR
Land Rover Discovery Si6 has used the AJ-V6 throughout. If you're unsure of your exact spec, we'll confirm it before you book.
The AJ-V6 has been fitted to every Discovery Si6 since launch — if your registration year isn't listed above, get in touch and we'll confirm availability directly against your reg.
WE COVER EVERY Land Rover Discovery Si6 MODEL YEAR:
Land Rover Discovery Si6
2004 Engine Rebuild
Land Rover Discovery Si6
2005 Engine Rebuild
Land Rover Discovery Si6
2006 Engine Rebuild
Land Rover Discovery Si6
2007 Engine Rebuild
Land Rover Discovery Si6
2008 Engine Rebuild
Land Rover Discovery Si6
2009 Engine Rebuild
Land Rover Discovery Si6
2010 Engine Rebuild
Land Rover Discovery Si6
2011 Engine Rebuild
Land Rover Discovery Si6
2012 Engine Rebuild
Land Rover Discovery Si6
2013 Engine Rebuild
Land Rover Discovery Si6
2014 Engine Rebuild
Land Rover Discovery Si6
2015 Engine Rebuild
Land Rover Discovery Si6
2016 Engine Rebuild
If your registration year isn't listed above, get in touch — we'll confirm availability directly against your reg.
Land Rover Discovery Si6 ENGINE COSTS
A Land Rover Discovery Si6 engine rebuild starts from
£2,200
A full replacement engine and fitting service is also available. Exact pricing depends on the condition of your existing engine and the parts required — submit your registration for a fixed-price quote within 30 minutes.

12 MONTH
UNLIMITED-MILEAGE
WARRANTY
MERCEDES Discovery Si6 ENGINE SIZES
• Land Rover Discovery Si6 3.0 Litre Engine (AJ-V6, I6)
MERCEDES Discovery Si6 FUEL TYPES
• Land Rover Discovery Si6 Petrol Mild Hybrid Engine Rebuilds
RELATED LAND ROVER ENGINES
Most Land Rover Discovery Si6 engine rebuilds are completed within 3-5 working days.
Nationwide recovery and collection available for all Land Rover Discovery Si6 models.









