Land Rover Defender Engine | AJ20D6 3.0L I6 Diesel MHEV
$8,499.00
At a Glance
- Condition: OEM used AJ20D6 3.0L inline-6 diesel engine assembly, compression tested, oil condition assessed, external components including mild-hybrid components documented per unit
- Availability: In stock for Land Rover Defender AJ20D6 applications (donor tagged 2020 per the source data)
- Shipping: Free shipping to all 50 states, 7 to 14 business days on diesel MHEV engine assemblies
- Application: Land Rover Defender, AJ20D6 3.0L inline-6 diesel (donor tagged 2020 per the source data) – Land Rover’s iconic Defender modern revival
- AJ20D6 3.0L I6 Diesel MHEV: Jaguar Land Rover’s Ingenium 3.0L inline-six diesel with 48V mild-hybrid
- Year note per source: The new Defender launched for 2020 with this Ingenium straight-six diesel – confirm exact year and tune by VIN
- Market note per source: US-market Defender diesel availability has been limited – confirm market and fitment by VIN
- Diesel-rated oil and new filter required per the source data
- Aftertreatment + MHEV planning per source: Plan for the DPF, SCR, AdBlue, and mild-hybrid hardware – this is a diesel, not a gasoline engine
- Related JLR listings: See our Range Rover Sport Engine, Range Rover Velar Engine, Range Rover Evoque Engine, Land Rover Discovery Engine, and Land Rover Discovery Sport Engine listings for related JLR lineup
- 15 day replacement warranty on component defects (excluding MHEV programming)
Description
About the Land Rover Defender Engine (AJ20D6 3.0L Inline-6 Diesel Mild Hybrid)
Need a replacement Land Rover Defender AJ20D6 3.0L inline-6 diesel mild-hybrid engine? Part Nests sources OEM used AJ20D6 3.0L inline-6 diesel engine assemblies for Land Rover Defender applications (donor tagged 2020 per the source data). The Land Rover Defender is Land Rover’s iconic Defender modern revival – Land Rover’s application of the historically significant Defender nameplate to a modern Defender platform launched for the 2020 model year. Jaguar Land Rover’s Ingenium 3.0L inline-six diesel with 48V mild-hybrid. Critical year note per the source data – the new Defender launched for 2020 with this Ingenium straight-six diesel. Confirm exact year and tune by VIN. Critical market note – US-market Defender diesel availability has been limited. Confirm market and fitment by VIN. Diesel-rated oil and new filter required. Plan for the DPF, SCR, AdBlue, and mild-hybrid hardware – this is a diesel, not a gasoline engine. Related to our broader JLR lineup. Each engine is compression tested with oil condition assessed. Call (855) 634-4447 to verify Defender year (2020+), market origin (US diesel availability limited), engine tune, and configuration before ordering.
What Is Included and Not Included
| Detail | Description |
|---|---|
| INCLUDED | The AJ20D6 3.0L inline-6 diesel engine assembly as photographed; confirm the exact configuration, including mild-hybrid components, at order. |
| NOT INCLUDED | Transmission, aftertreatment components not pictured, the 48V battery unless pictured, accessories, and fluids; confirm what transfers at install. |
| Tools You Need | Standard engine-swap tools, diesel-rated oil and a new filter, and a plan for the DPF, SCR, AdBlue, and mild-hybrid hardware; this is a diesel, not a gasoline engine. |
Land Rover Defender Vehicle Context (Modern Revival, L663)
- Land Rover’s iconic Defender modern revival: The Land Rover Defender is Land Rover’s iconic Defender modern revival – Land Rover’s application of the historically significant Defender nameplate to a modern Defender platform launched for the 2020 model year. Represents Land Rover’s return to the Defender nameplate after a production hiatus (classic Defender production ended in 2016 approximately)
- Defender heritage significance: The Defender / Series Land Rover nameplate spans an extensive multi-decade Land Rover heritage. Classic Land Rover Series I / II / III (1948-1985), Land Rover 90 / 110 / Defender (1983-2016 various generations) represent one of the most iconic 4×4 off-road nameplates globally with strong enthusiast community following. Widely regarded across the automotive enthusiast community and off-road community
- Modern Defender L663 platform: The modern Defender L663 platform is JLR’s modern unibody Defender architecture launched for the 2020 model year (US market). Different from the classic body-on-frame Defender architecture – modern Defender uses D7x unibody platform architecture shared with various other modern JLR applications. Various Defender body configurations including Defender 90 (short-wheelbase), Defender 110 (long-wheelbase), Defender 130 (extended long-wheelbase 8-seat capacity)
- Defender variants and powertrain options: Various modern Defender powertrain configurations across the production run including 2.0L Ingenium turbo gasoline, 2.0L Ingenium turbo-diesel (see our related Land Rover Discovery Engine listing for the 2.0L Ingenium diesel variant), 3.0L Ingenium inline-six gasoline / diesel (various tunes, this application 3.0L I6 diesel MHEV), Defender V8 (5.0L supercharged V8 variant), and various other powertrain configurations
JLR AJ20D6 3.0L Ingenium Inline-Six Diesel Context
- AJ20D6 architecture: Jaguar Land Rover’s Ingenium 3.0L inline-six diesel variant. Modern JLR modular Ingenium engine family variant – 3.0L displacement inline-six configuration provides balanced performance / efficiency characteristics for various JLR applications. Represents JLR’s return to inline-six engine architecture (JLR historically used various inline-six engines during earlier Rover era before transitioning to other configurations)
- 48V mild-hybrid system: Per the source data, includes mild-hybrid components. Modern JLR 48V mild-hybrid system provides various mild-hybrid benefits including seamless start-stop functionality, torque assist during acceleration, regenerative braking, and various fuel economy / emission benefits. Modern electrification approach for various JLR luxury SUV applications
- AJ20D6 diesel MHEV applications: The AJ20D6 3.0L inline-six diesel MHEV is used across various modern JLR luxury SUV applications including the Land Rover Defender (this application), Range Rover, Range Rover Sport (various diesel tunes), Land Rover Discovery, various Jaguar diesel applications, and various other JLR luxury applications. Widely deployed JLR modern I6 diesel MHEV variant
- US-market Defender diesel note: Per the source data market note, US-market Defender diesel availability has been limited. The AJ20D6 diesel was primarily offered on non-US Defender applications with limited US-market diesel Defender availability. Various modern JLR diesel applications have had limited US-market availability due to various market / regulatory considerations. Verify market and fitment by VIN before ordering
Related JLR / Related Luxury SUV Listings
- Range Rover Sport Engine: Related JLR premium performance (AJ133 5.0L supercharged V8) – see our Range Rover Sport engine listing
- Range Rover Velar Engine: Related JLR supercharged V6 (AJ126 3.0L supercharged V6) – see our Range Rover Velar engine listing
- Range Rover Evoque Engine: Related JLR compact luxury SUV (D180 2.0L Ingenium turbo-diesel) – see our Range Rover Evoque engine listing
- Land Rover Discovery Engine: Related JLR mid-size 7-seat luxury SUV (2.0L Ingenium turbo-diesel) – see our Land Rover Discovery engine listing
- Land Rover Discovery Sport Engine: Related JLR compact luxury SUV PHEV (P300e, 1.5L turbo gas + electric) – see our Land Rover Discovery Sport engine listing
- Mercedes 300D Engine: Related classic diesel context (OM617.952 3.0L inline-5 turbo diesel, W123) – see our Mercedes 300D engine listing
Engine Specifications
- Type: OEM used AJ20D6 3.0L inline-six diesel MHEV engine assembly for Land Rover Defender (donor tagged 2020)
- Function: Turbocharged diesel inline-six engine with 48V mild-hybrid provides motive power for Land Rover Defender modern luxury 4×4 applications. Modern JLR Ingenium diesel engine architecture with common rail direct injection, turbocharging, and 48V mild-hybrid assist
- Construction: The AJ20D6 3.0L inline-6 diesel engine assembly as photographed, including mild-hybrid components at order per the source data. Confirm the exact configuration at order
- What is not included: Transmission, aftertreatment components not pictured, the 48V battery unless pictured, accessories, and fluids per the source data. Confirm what transfers at install
- Tools required: Standard engine-swap tools per the source data. Diesel-rated oil and a new filter. A plan for the DPF, SCR, AdBlue, and mild-hybrid hardware. This is a diesel, not a gasoline engine
- Common failure modes: Compression loss, oil consumption, valvetrain wear, turbocharger failure, diesel-specific injector wear, DPF / SCR aftertreatment component considerations, 48V mild-hybrid electronic control considerations, various age-related component wear. Symptoms include engine performance loss, aftertreatment warnings, MHEV integration issues, various diesel-specific powertrain integration issues
- Testing: Compression tested, oil condition assessed, external components including mild-hybrid components documented per unit before shipment
Vehicle Compatibility
| Detail | Description |
|---|---|
| Land Rover Defender, AJ20D6 3.0L inline-6 diesel (donor tagged 2020) | VIN confirmed at order |
| Year note | The new Defender launched for 2020 with this Ingenium straight-six diesel; confirm exact year and tune by VIN |
| Market note | US-market Defender diesel availability has been limited; confirm market and fitment by VIN |
| Reference Application | 2020 Land Rover Defender Engine (tune, year, market to be confirmed) |
Why Buy From Part Nests
- OEM verified AJ20D6 3.0L inline-6 diesel MHEV engine for Land Rover Defender (donor tagged 2020)
- Compression tested, oil condition assessed, external components including mild-hybrid documented per unit
- Support for 2020+ modern Defender L663 platform verification
- Support for market origin verification (US-market Defender diesel limited availability)
- Related to broader JLR Ingenium modular engine family and modern JLR MHEV context
- Free shipping to all 50 states
- 15 day replacement warranty on component defects (excluding MHEV programming)
- Support team familiar with modern Land Rover Defender revival lineage and JLR AJ20D6 diesel MHEV architecture
- Call (855) 634-4447 to confirm your Defender year, market origin, engine tune, and configuration before ordering.
15 Day Replacement Warranty
Every used Land Rover Defender Engine carries a 15 day replacement warranty starting on the delivery date. Year (2020+ modern Defender) and market origin (US-market diesel limited availability) verification are critical before ordering. Diesel-rated oil and DPF / SCR / AdBlue / MHEV service planning required. Call (855) 634-4447 to start a warranty claim within 15 days of delivery.
What Is Covered
- Component defects present on arrival beyond what was disclosed
- Compression, oil, or major internal failures within 15 days from installation
- Turbocharger or engine assembly failures not disclosed at sale
- Incorrect part shipped due to an error on our end
What Is Not Covered
- Damage caused during installation
- Attempted installation on classic Defender applications (different platform)
- Damage from incorrect diesel-rated oil, aftertreatment neglect, or MHEV component mishandling
- Labor expenses of any kind, including diesel MHEV engine swap labor and MHEV programming service
- Part: OEM used AJ20D6 3.0L inline-6 diesel MHEV engine assembly
- Application: Land Rover Defender, AJ20D6 3.0L I6 diesel MHEV (donor 2020)
- Segment: Land Rover iconic Defender modern revival (L663 platform)
- Introduction: 2020 US model year (new Defender launch)
- Engine Family: JLR Ingenium modular (3.0L inline-six diesel variant)
- MHEV: 48V mild-hybrid Belt-Starter-Generator system
- Market Note: US-market Defender diesel availability limited
- Aftertreatment: DPF + SCR + AdBlue system planning required
- Body Variants: Defender 90, Defender 110, Defender 130
Additional information
| Brand | Land Rover |
|---|---|
| Emission Norm | EPA Tier 3 (page also cites BS VI; confirm for your market) |
| Fuel System | High-pressure common-rail direct injection (diesel) |
| Hybrid System | 48V mild hybrid electric assist |
| Turbocharger | Twin variable-geometry turbos |
| Valves | 24 (4 per cylinder), DOHC |
| Transmission | 8-speed automatic |
| Application | 2020 Land Rover Defender Engine (tune, year, market to be confirmed by VIN) |
| SKU | vaz731 |
| Price | $8, 499.00 |
An OEM used AJ20D6 3.0L inline-6 diesel MHEV engine assembly for Land Rover Defender applications (donor tagged 2020 per the source data). The AJ20D6 3.0L inline-6 diesel engine assembly with 48V mild-hybrid components as photographed. Function is providing motive power for Land Rover Defender modern luxury 4x4 applications. Modern JLR Ingenium diesel engine architecture with common rail direct injection, turbocharging, and 48V mild-hybrid assist.
Land Rover's iconic Defender modern revival - Land Rover's application of the historically significant Defender nameplate to a modern Defender platform launched for the 2020 model year. Represents Land Rover's return to the Defender nameplate after a production hiatus. Modern Defender L663 platform is JLR's modern unibody Defender architecture (different from the classic body-on-frame Defender).
Per the source data year note, the new Defender launched for 2020 with this Ingenium straight-six diesel - confirm exact year and tune by VIN. First model year of the modern Defender revival after a multi-decade production hiatus (classic Defender production ended in 2016 approximately).
Per the source data market note, US-market Defender diesel availability has been limited - confirm market and fitment by VIN. The AJ20D6 diesel was primarily offered on non-US Defender applications with limited US-market diesel Defender availability. Various modern JLR diesel applications have had limited US-market availability due to various market / regulatory considerations.
Jaguar Land Rover's Ingenium 3.0L inline-six diesel variant. Modern JLR modular Ingenium engine family variant - 3.0L displacement inline-six configuration provides balanced performance / efficiency characteristics. Represents JLR's return to inline-six engine architecture (JLR historically used various inline-six engines during earlier Rover era).
48V mild-hybrid system. Modern JLR 48V mild-hybrid system provides various mild-hybrid benefits including seamless start-stop functionality, torque assist during acceleration, regenerative braking, and various fuel economy / emission benefits. Modern electrification approach for various JLR luxury SUV applications. Per the source data, plan for the mild-hybrid hardware at installation.
The Defender / Series Land Rover nameplate spans an extensive multi-decade Land Rover heritage. Classic Land Rover Series I / II / III (1948-1985), Land Rover 90 / 110 / Defender (1983-2016 various generations) represent one of the most iconic 4x4 off-road nameplates globally with strong enthusiast community following.
Various Defender body configurations including Defender 90 (short-wheelbase), Defender 110 (long-wheelbase), Defender 130 (extended long-wheelbase 8-seat capacity). Different body configurations may use different specific engine / drivetrain configurations. Verify body configuration and engine variant when ordering.
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