Land Rover Defender 110 D350 Engine ReplacementCompare Prices & Get Quotes
Get quotes today from trusted UK Land Rover Defender 110 D350 engine specialists. Compare prices on reconditioned, rebuilt and used engines to secure the best supply and fit solution for your vehicle.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
From £7,500 to £11,000 [ESTIMATED - using Land Rover 306DT as proxy for 3.0L Ingenium architecture]
Used from £3,500 · Reconditioned from £6,500 · Common codes: DT306 (306DT)
From £3,500
Tested, bare/short engine
From £6,500
Rod bearings addressed, tested
From quote
Upgraded bearings, full teardown, revised valvetrain
Secure enquiry - no spam, no pressure. Genuine quotes only from vetted UK Land Rover Defender 110 D350 specialists.
3 Simple Steps3 Simple Stepsto Finding the Best Land Rover Defender 110 D350 Replacement Engineto Finding the Best Land Rover Defender 110 D350 Replacement Engine
Most replacements completed within 3-5 days.
Variant HistoryLand Rover Defender 110 D350 - Engine History & Specs at a Glance
When the D350 variant launched in the modern L663 generation, it brought flagship 3.0-litre inline-six mild-hybrid diesel performance to the iconic long-wheelbase Defender 110. Its engine has remained a singular, high-output unit throughout its production run.
Variant HistoryLand Rover Defender 110 D350 - Engine History & Specs at a Glance
When the D350 variant launched in the modern L663 generation, it brought flagship 3.0-litre inline-six mild-hybrid diesel performance to the iconic long-wheelbase Defender 110. Its engine has remained a singular, high-output unit throughout its production run.
Land Rover Defender 110 D350
Fuel TypeDiesel (MHEV)
Engine Size Range3.0L
Power Output Range350 PS (345 bhp / 258 kW)Engine History Timeline
DT306 (AJ20D6) 3.0L Inline-6 MHEV Diesel, 350 PS (Introduction of the D350 powertrain to the L663 Defender 110 range, featuring twin-turbocharging and 48V mild-hybrid assistance).
Key Specs Snapshot
Fuel TypeDiesel (MHEV)Engine Size Range3.0LPower Output Range350 PS (345 bhp / 258 kW)Years Produced2020-presentEvery engine fitted to the Land Rover Defender 110 D350 is covered below, with UK rebuilt pricing and known failure points.
Land Rover Defender 110 D350 Engine Codes - Specifications & Replacement CostLand Rover Defender 110 D350 Engine Codes - Specifications & Replacement Cost
3.0L Diesel MHEV (2020-present)
Power Output350 PS (345 bhp)Years Fitted2020-present
Compatible Trim Levels
- Defender 110 D350 S
- Defender 110 D350 SE
- Defender 110 D350 HSE
- Defender 110 D350 X-Dynamic
- Defender 110 D350 X
Find your exact engine code, specs and UK replacement cost guide.
Used
Tested, ready-to-fit engine
£3,500-£5,500 [ESTIMATED - using Land Rover 306DT as proxy for 3.0L Ingenium architecture]
Reconditioned
Addressed known issues, tested
£6,500-£9,500 [ESTIMATED - using Land Rover 306DT as proxy for 3.0L Ingenium architecture]
Rebuilt
Full teardown, upgraded internals
£7,500-£11,000 [ESTIMATED - using Land Rover 306DT as proxy for 3.0L Ingenium architecture]
Common Failure
EGR cooler leaks and oil dilution from frequent DPF regeneration cycles are the most documented issues for this 3.0L Ingenium architecture, alongside occasional timing chain tensioner wear.
The Land Rover Defender 110 D350 is a high-performance, modern mild-hybrid diesel that is generally robust when properly maintained. However, its 3.0L Ingenium architecture is susceptible to specific emissions-related and timing system issues. Rebuilt engines through EnginesMarket include upgraded components addressing these original failure points, plus a minimum 12-month unlimited-mileage warranty.
Why the Land Rover Defender 110 D350 DT306 Suffers Premature Wear
Affected Vehicles
Land Rover Defender 110 D350 (DT306, 2020-present)
Typical Failure Mileage
60,000-100,000 miles
Root Cause
Frequent short journeys prevent complete DPF regeneration, leading to fuel wash and oil dilution, while the EGR cooler is prone to internal leaks contaminating the intake system.
Why It Happens
Frequent short journeys prevent complete DPF regeneration, leading to fuel wash and oil dilution, while the EGR cooler is prone to internal leaks contaminating the intake system.
Dealer (parts + labour)
£1,200-£2,000
Specialist (parts + labour)
£600-£1,200
What it involves
Cleaning or replacing the EGR cooler, forced DPF regeneration, and flushing diluted oil.
Suitability
Effective for early symptoms; prevents catastrophic bottom-end wear.
1 - 2 daysDealer (parts + labour)
£11,000-£15,000
Specialist (parts + labour)
£7,500-£11,000 [ESTIMATED - using Land Rover 306DT as proxy for 3.0L Ingenium architecture]
What it involves
Supply & fit, upgraded components addressing the original failure point, 12-month warranty.
Suitability
The right call if the engine has suffered catastrophic oil starvation or block damage.
1 - 2 days
All 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 |
|---|---|---|---|---|---|
 Minor/Preventative (EGR/DPF service + oil flush) Minor | £1,200-£2,000 | £600-£1,200 | Cleaning or replacing the EGR cooler, forced DPF regeneration, and flushing diluted oil. | Effective for early symptoms; prevents catastrophic bottom-end wear. | 1 - 2 days |
 Full Replacement - rebuilt/reconditioned engine Best Value | £11,000-£15,000 | £7,500-£11,000 [ESTIMATED - using Land Rover 306DT as proxy for 3.0L Ingenium architecture] | Supply & fit, upgraded components addressing the original failure point, 12-month warranty. | The right call if the engine has suffered catastrophic oil starvation or block damage. | 1 - 2 days |
Vehicle Value Check
Vehicle Value Check
A typical Land Rover Defender 110 D350 (L663) is worth £55,000-£85,000+ `[THIRD-PARTY]`. At this value, a rebuilt engine replacement cost is a small fraction of the vehicle's overall value, making replacement highly viable to preserve the asset.
Our Recommendation
Our Recommendation
If the issue is strictly early-stage EGR/DPF related, a specialist service and software update is the most cost-effective fix. However, if there is accompanying loss of compression, knocking, or internal damage, a fully rebuilt unit with all known vulnerabilities addressed is the safest long-term choice for a vehicle of this caliber.
Don't Let Engine Failure Write Off Your Land Rover Defender 110 D350
Protect your investment with a rebuilt engine that includes upgraded components, a comprehensive 12-month unlimited mileage warranty, and nationwide supply & fit delivery. Comparing specialist quotes ensures you avoid main dealer premiums while securing precision engineering for your high-performance Defender.
Compare rebuilt DT306 Land Rover Defender 110 D350 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 Land Rover Defender 110 D350. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier."
Land Rover Defender 110 D350 Engine ReplacementFrequently Asked Questions
Question 1How much does a Land Rover Defender 110 D350 engine replacement cost-
A reconditioned or rebuilt DT306 engine for the Land Rover Defender 110 D350 typically ranges from £6,500 to £11,000 for supply only, depending on the condition and specialist.
- Rebuilt units include upgraded components and a warranty.
- Supply and fit labour will add approximately £1,000-£1,500 depending on the workshop.
Question 2What are the signs of EGR or DPF failure in a Land Rover Defender 110 D350-
Early signs include unexplained oil level rise (due to fuel dilution), excessive black or white smoke, or a loss of power during acceleration.
- You may also notice rough idling, increased fuel consumption, or illuminated engine management lights.
- Ignoring these signs can lead to catastrophic internal engine damage.
Question 3Is it worth replacing the engine in a modern Land Rover Defender 110 D350-
Yes, given the high retained value of the L663 Defender 110 D350 (typically £55,000+), a rebuilt engine is a financially sound investment.
- A rebuilt unit restores factory performance and includes a 12-month warranty.
- It is significantly more cost-effective than purchasing a new vehicle.
Question 4How long does a Land Rover Defender 110 D350 engine replacement take-
A professional supply and fit service for the DT306 engine typically takes 2 to 4 days.
- This includes engine removal, thorough bay cleaning, installation of the replacement unit, and comprehensive ECU calibration.
- Nationwide delivery of the replacement engine can be arranged to your chosen specialist.
Question 5What is the difference between a used and a rebuilt Land Rover Defender 110 D350 engine-
A used engine is a direct salvage unit with unknown history and limited warranty coverage.
- A rebuilt engine is fully stripped, cleaned, and fitted with new or upgraded components (such as updated EGR coolers and timing tensioners).
- Rebuilt engines come with a minimum 12-month unlimited mileage warranty, offering superior peace of mind.
Why Choose UsCompare Land Rover Defender 110 D350Engine PricesToday
50+ Land Rover Defender 110 D350 engines supplied through our network
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