

Land Rover Defender OctaEngine Rebuild— From £6,500
Specialist Land Rover Defender Octa 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
S68 V8 Specialists

Your Land Rover Defender Octa Engine

Vehicle
Land Rover Defender Octa
Model
Defender
Variant
Octa
Fuel
Petrol Twin-Turbo
Engine
S68B44T0
Capacity
4.4L V8
Generations
L663 (2024–present)
Rebuild From
£6,500
Not sure which engine you have?
The Defender Octa uses the S68B44T0 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 Defender OctaEngine Rebuild Price
Starting From £6,500

Engine Code
S68B44T0Rebuild From
£6,500

Generation
Exact price depends on condition and parts required — submit your reg for a fixed-price quote.
Land Rover Defender Octa Oil Leaks & Coolant System Wear (S68B44T0 I6)
The S68B44T0 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 S68B44T0 V6. We replace timing chains, bearings, water pump and gaskets as standard on every S68B44T0 rebuild.
Because the Defender Octa uses a completely different engine family from the V8 M178 fitted to the Defender 63 and GT 63 S, parts and rebuild specifications don't cross over between them.
Source: Established S68B44T0 specialist pattern — timing chain, bearing and gasket wear across integrated-starter-generator inline-six units.

Land Rover Defender OctaENGINE OPTIONS
Every Defender Octa is different. That's why we offer the right solution for your engine, your car and your budget.
REBUILDING YOUR DEFENDER OCTA ENGINE
Most engine suppliers sell you a used engine of unknown history and hope it matches. We rebuild the engine your Defender Octa 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 Defender Octa owners choose, and it's the one we'd recommend for most situations.
RECONDITIONED DEFENDER OCTA 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 DEFENDER OCTA 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 DEFENDER OCTA 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 on the S68B44T0.
REPLACEMENT DEFENDER OCTA 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 DEFENDER OCTA 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 S68B44T0 and talk you through the best solution for your Defender Octa, honestly.
Ask About Your OptionsOUR WORKSHOP
01RECOVERY COLLECTION
02S68B44T0 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 Defender Octa rebuild looks like.
Land Rover Defender Octa ENGINE REBUILD PROCESS
WHAT MERCEDES Defender Octa OWNERS SAY
WE COVER YOUREXACT VEHICLE
Enter your registration below and we'll confirm your Land Rover Defender Octa has the S68B44T0, along with an exact rebuild price.
WHY MERCEDES Defender Octa 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 Defender Octa
RECOVERY

Land Rover Defender Octa
DIAGNOSTICS

Land Rover Defender Octa
STRIPPED ENGINE

Land Rover Defender Octa
TIMING CHAIN REPLACEMENT

Land Rover Defender Octa
IN FOR REBUILD

Land Rover Defender Octa
REBUILD IN PROGRESS
HOW IT WORKS
SEND YOURREGISTRATION
RECEIVE YOURFIXED-PRICE QUOTE
WE RECOVERYOUR CAR
REBUILD &REFIT
Most Defender 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 Defender Octa 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 Defender Octa ENGINE

The Defender Octa is the flagship performance variant of the modern L663 Defender, launched in 2024. At its heart sits the BMW S68B44T0 — a 4.4-litre twin-turbocharged V8. This is the only BMW-sourced engine in the Defender range, sharing its basic architecture with BMW's S63/N63 hot-vee family but featuring a cross-plane crank and mild-hybrid assistance. The Octa represents a significant departure from the rest of the Defender powertrain line-up — it's not an Ingenium-based unit, and it has its own distinct characteristics, including a 48V mild-hybrid system that's BMW's own hardware, separate from the Ingenium MHEV system used elsewhere in the range.
We continue to rebuild and replace S68B44T0 engines for every Defender Octa on the road.
Land Rover Defender Octa ENGINE CODES
A 4.4-litre twin-turbo V8 fitted to the Defender Octa from 2024 to present (L663 generation). BMW's latest performance V8 architecture, featuring a hot-vee design with turbos positioned between the cylinder banks. We replace timing chains, bearings, water pump and gaskets as standard on every S68 rebuild. Check Your S68 Defender Octa → [link to quote form]
Check Your S68B44T0 Defender OctaLand Rover Defender Octa ENGINE COMPATIBILITY

The S68B44T0 is a specialised engine unique to the Octa within the Land Rover range. It's not interchangeable with the AJ133 supercharged V8 used in other Defender V8 variants (P425/P500/P525), nor with any Ingenium diesel or petrol units. When we quote or supply any work on a Defender Octa, we confirm:
Your exact engine code (S68B44T0) via registration or VIN
Your generation (L663)
Drivetrain and ancillary specification
BMW-sourced hardware considerations specific to this engine
This is why we always start with your registration rather than a generic Defender quote — it protects you from paying for parts that don't fit your actual car.
Land Rover Defender Octa APPLICATIONS BY GENERATION
Land Rover Defender Octa ENGINES BY YEAR
Land Rover Defender Octa has used the S68B44T0 throughout. If you're unsure of your exact spec, we'll confirm it before you book.
The S68B44T0 has been fitted to every Defender Octa 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 Defender Octa MODEL YEAR:
Land Rover Defender Octa
2024 Engine Rebuild
Land Rover Defender Octa
2025 Engine Rebuild
Land Rover Defender Octa
2026 Engine Rebuild
If your registration year isn't listed above, get in touch — we'll confirm availability directly against your reg.
Land Rover Defender Octa ENGINE COSTS
A Land Rover Defender Octa engine rebuild starts from
£6,500
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 Defender Octa ENGINE SIZES
• Land Rover Defender Octa 3.0 Litre Engine (S68B44T0, I6)
MERCEDES Defender Octa FUEL TYPES
• Land Rover Defender Octa Petrol Mild Hybrid Engine Rebuilds
RELATED LAND ROVER ENGINES
Most Land Rover Defender Octa engine rebuilds are completed within 3-5 working days.
Nationwide recovery and collection available for all Land Rover Defender Octa models.









