Land Rover   ·   2024–2026

Defender 3 D350 MHEV: Technical specifications

Technical specifications (2024–2026)

The Land Rover Defender (L663) 3 D350 MHEV is the 3-litre diesel variant, engine code AJ20D6/DT306, built from 2024 to 2026. Quick answers and key figures below, then the full workshop tables.

Engine codeAJ20D6/DT306
Power258 kW (351 hp)
FuelDiesel
Cylinders6
Oil capacity8,83litres · with the filter

Engine & identification

Vehicle identification

No. of cylinders Type6/DOHC
Capacity cc2997
Compression ratio :115,5
Fuel system MakeBosch

Injection system

Air metering TypeMass/MAP
Pump typeCommon rail
Fuel main pump delivery pressure bar2500 Max

Valve clearances

Valve clearances on the Land Rover Defender 3 D350 MHEV (2024–2026) are hydraulic — they self-adjust, so no manual clearance figure applies.

Valve clearance - INLET mmHydraulic
Valve clearance - EXHAUST mmHydraulic

Engine oil & fluids

Engine oil

The Land Rover Defender 3 D350 MHEV (2024–2026) takes 8.83 litres of engine oil with the filter. The specified engine oil grade is SAE 0W-30 for all ambient temperatures, with oil specification STJLR.03.5007 and API/ACEA classification /C2.

Transfer box

See the reference table for the complete transfer box entries and their conditions.

Coolant

Use diagnostic equipment to carry out bleeding procedure. Cooling system must be filled using vacuum filling equipment.

See the reference table for the complete coolant entries and their conditions.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range All temperatures
Engine oil grade SAE 0W-30
Engine oil classification OEM STJLR.03.5007
Engine oil classification API/ACEA /C2
Engine with filter(s) litres 8.83
Other lubricants and capacities
Automatic transmission fluid Type Shell L12108 (ZF Lifeguard 8)
Automatic transmission (drain & refill) litres 6.3
View more information
Filling transmission and checking ATF level
Automatic transmission (dry fill) litres 8.3
Automatic transmission - dry-fill capacity
Differential oil grade - front SAE Castrol BOT 750B Synthetic
Differential front/AT litres
Selectable 4WD
Differential oil grade - rear SAE Castrol BOT 750B Synthetic
Differential rear litres
Electronic differential
Transfer box oil grade SAE Castrol Halbot 311 Synthetic
Transfer box litres 1.25
Coolant Type Havoline XLC
Coolant Colour Orange
Cooling system - total capacity litres 14.5
View more information
Use diagnostic equipment to carry out bleeding procedure. Cooling system must be filled using vacuum filling equipment.
Brake fluid Type DOT 4
Brake fluid classification ISO Class 6
Brake fluid litres 1.13
Use diagnostic equipment to carry out bleeding procedure.
Selective catalytic reduction (SCR) additive Type AdBlue (AUS 32)

Brakes & wear limits

Brake disc thickness

Brake discs on the Land Rover Defender 3 D350 MHEV (2024–2026) are replaced at a minimum thickness of 32 mm (ventilated) front and 23 mm (ventilated) rear.

Minimum disc thickness for replacement - ventilated Front32 mm
Minimum disc thickness for replacement - ventilated Rear23 mm

Brake disc and drum dimensions

Minimum pad thickness Front3 mm
Minimum pad thickness Rear3 mm

Bar lengths use a square-root scale so small and large values stay readable.

Service & electrical

Battery

The Land Rover Defender 3 D350 MHEV (2024–2026) uses a 12 V, 90 Ah battery (reserve capacity 150 minutes).

Battery V/RC(Ah)12/150 (90)

Glow plugs

Glow plugs for the Land Rover Defender 3 D350 MHEV (2024–2026): Original equipment LR128419, Champion CH932 and NGK CZ552.

Glow plug - part no. Original equipmentLR128419
Glow plug - part no. ChampionCH932
Glow plug - part no. NGKCZ552

Service checks and adjustments

Radiator cap bar1,40
Thermostat opens °C90

Tightening torques

Cylinder head bolt torque

The cylinder head bolt torque for the Land Rover Defender 3 D350 MHEV (2024–2026) is 50 Nm.

Cylinder head
Renew boltsYes
Tighten50 Nm
Tighten90º
Tighten190º
TightenM6=12 Nm
Cylinder head instructions
Other engine tightening torques
Main bearings Renew bolts/nutsYes
Main bearings Stage 1
Big end bearings Renew bolts/nutsYes
Big end bearings Stage 120 Nm
Big end bearings Stage 2125°
Oil pump to cylinder block25 Nm
Sump bolts
View more information
Lower oil pan
Sump drain bolt23 Nm
Flywheel/driveplate-/30 Nm+120°
Crankshaft pulley/damper bolts37 Nm+90°
Camshaft sprocket/gear80 Nm+90°
Camshaft carrier/cap
View more information
Camshaft carrier/cap
Camshaft/rocker cover1)10 Nm 2)30 Nm
View more information
Camshaft/rocker cover
Inlet manifold to cylinder head12 Nm
Exhaust manifold to cylinder head1)10 Nm 2)18 Nm
Exhaust downpipe to manifold25 Nm
Water pump25 Nm
Coolant pump - engine
Glow plugs17 Nm
Glow plugs
Crankshaft position (CKP) sensor/engine speed (RPM) sensor8 Nm
Camshaft position (CMP) sensor8 Nm
Nitrogen oxide (NOx) sensor60 Nm
Engine oil pressure switch15 Nm
Oil filter25 Nm
Chassis tightening torques
Front hub120 Nm+60°
Front hub - wheel bearing housing bolts
Front hub - wheel bearing housing bolts
Rear hub
Rear hub
Steering wheel48 Nm
Steering rack/box mounting110 Nm+180°
Steering track rod end140 Nm
Brake disc to hub Front10 Nm
Brake disc to hub - front
Brake caliper to carrier Front35 Nm
Brake caliper/carrier to hub Front133 Nm+60°
Brake disc to hub Rear10 Nm
Brake disc to hub - rear
Brake caliper to carrier Rear35 Nm
Brake caliper/carrier to hub Rear110 Nm+120°
Back plate to hub Rear9 Nm
ABS sensor Front9 Nm
ABS sensor Rear9 Nm
Road wheels

Bar lengths use a square-root scale so small and large values stay readable.

Air conditioning

No. of AC service connectors2
Air conditioning restrictor typeExpansion valve
Compressor clutch/magnetic couplingYes
Compressor variable displacement solenoidYes
Air conditioning refrigerant Type
Do not mix R134a with R1234yf.
Air conditioning refrigerant quantity grams650±10
Air conditioning oil groupPAG
Air conditioning oil TypeSP-A2
Air conditioning oil quantity cm³80
Air conditioning oil quantity
Air conditioning oil viscosity ISO46

Frequently asked questions

What glow plugs does the Land Rover Defender 3 D350 MHEV use?

Glow plugs for the Land Rover Defender 3 D350 MHEV (2024–2026): Original equipment LR128419, Champion CH932 and NGK CZ552.

How much oil does the Land Rover Defender 3 D350 MHEV take?

The Land Rover Defender 3 D350 MHEV (2024–2026) takes 8.83 litres of engine oil with the filter. The specified engine oil grade is SAE 0W-30 for all ambient temperatures, with oil specification STJLR.03.5007 and API/ACEA classification /C2.

What are the valve clearances for the Land Rover Defender 3 D350 MHEV?

Valve clearances on the Land Rover Defender 3 D350 MHEV (2024–2026) are hydraulic — they self-adjust, so no manual clearance figure applies.

What is the cylinder head torque for the Land Rover Defender 3 D350 MHEV?

The cylinder head bolt torque for the Land Rover Defender 3 D350 MHEV (2024–2026) is 50 Nm.

What is the minimum brake disc thickness for the Land Rover Defender 3 D350 MHEV?

Brake discs on the Land Rover Defender 3 D350 MHEV (2024–2026) are replaced at a minimum thickness of 32 mm (ventilated) front and 23 mm (ventilated) rear.

What battery does the Land Rover Defender 3 D350 MHEV use?

The Land Rover Defender 3 D350 MHEV (2024–2026) uses a 12 V, 90 Ah battery (reserve capacity 150 minutes).