Engine & identification
Vehicle identification
| No. of cylinders Type | 8/DOHC |
|---|---|
| Capacity (Fiscal) cc | 4999 |
| Compression ratio :1 | 9,5 |
| Suitable for unleaded petrol | Yes |
| Minimum octane rating RON | 98 |
| Ignition system Description | Map-DI |
| Trigger location | Cam/Crankshaft |
| Fuel system Description | MFI-s(d) |
| Air metering Type | Mass/MAP |
| Combined ignition and fuel ECM | Yes |
| Diagnostic socket | Yes |
Ignition system
| Ignition coil Make | Land Rover |
|---|---|
| Ignition coil Type | LR035548 |
| Ignition coil supply voltage + with ballast V | 12,0 |
Firing order
The firing order for the Land Rover Defender 5.0 P425 (2024–2026) is 1-2-3-4-5-6-7-8.
| Firing order | 1-2-3-4-5-6-7-8 |
|---|
Valve clearances
Valve clearances on the Land Rover Defender 5.0 P425 (2024–2026) are hydraulic — they self-adjust, so no manual clearance figure applies.
| Valve clearance - INLET mm | Hydraulic |
|---|---|
| Valve clearance - EXHAUST mm | Hydraulic |
Engine oil & fluids
Engine oil
The Land Rover Defender 5.0 P425 (2024–2026) takes 8.0 litres of engine oil with the filter. The specified engine oil grade is SAE 0W-20 for all ambient temperatures, with oil specification STJLR.03.5006.
Transfer box
See the reference table for the complete transfer box entries and their conditions.
Coolant
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
| Engine oil options | |
|---|---|
| Ambient temperature range | All temperatures |
| Engine oil grade SAE | 0W-20 |
| Engine oil classification OEM | STJLR.03.5006 |
| Engine with filter(s) litres | 8.0 |
| Other lubricants and capacities | |
| Automatic transmission fluid Type | Shell L12108 (ZF Lifeguard 8) |
| Automatic transmission (drain & refill) litres | 6.9 |
| Coolant pump - engine | |
| Automatic transmission (dry fill) litres | 8.9 |
| 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 oil grade - rear | |
| 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 | 7.8 |
| View more information | — |
| 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 |
Brakes & wear limits
Brake disc thickness
Brake discs on the Land Rover Defender 5.0 P425 (2024–2026) are replaced at a minimum thickness of 32 mm (ventilated) front and 23 mm (ventilated) rear.
| Minimum disc thickness for replacement - ventilated Front | 32 mm |
|---|---|
| Minimum disc thickness for replacement - ventilated Rear | 23 mm |
Brake disc and drum dimensions
| Minimum pad thickness Front | 3 mm |
|---|---|
| Minimum pad thickness Rear | 3 mm |
Service & electrical
Ignition timing
The ignition timing on the Land Rover Defender 5.0 P425 (2024–2026) is not adjustable.
| Ignition timing - basic BTDC °Engine/rpm | Not adjustable |
|---|
Battery
The Land Rover Defender 5.0 P425 (2024–2026) uses a 12 V, 90 Ah battery (reserve capacity 150 minutes).
| Battery V/RC(Ah) | 12/150 (90) |
|---|
Tuning and emissions
| Ignition advance checks °Engine/rpm | ECM Controlled |
|---|---|
| Idle speed rpm | Not adjustable |
Service checks and adjustments
| Radiator cap bar | 2,0 |
|---|---|
| Thermostat opens °C | 101 |
Spark plugs
| Spark plugs Original equipment | NGK |
|---|---|
| Spark plug Type | SILZKAR7E8S |
Tightening torques
| Cylinder head instructions | — |
|---|---|
| Cylinder head | |
| Renew bolts | Yes |
| Other engine tightening torques | |
| Oil pump to cylinder block | 12 Nm |
| Sump bolts | 25 Nm |
| View more information | — |
| Assemble components and tighten bolts 1-6 within 7 minutes and bolts 7-16 within 40 minutes. | |
| Flywheel/driveplate | -/45 Nm+90° |
| Crankshaft pulley/damper centre bolt | 200 Nm+270° |
| Crankshaft pulley/damper bolts | 65 Nm |
| Assemble components within 7 minutes. | |
| Camshaft sprocket/gear | 10 Nm |
| Camshaft carrier/cap | 11 Nm |
| Camshaft/rocker cover | — |
| View more information | — |
| Assemble components within 7 minutes. | |
| Inlet manifold to cylinder head | 25 Nm |
| Exhaust manifold to cylinder head | 1)10 Nm 2)18 Nm |
| Exhaust downpipe to manifold | 40 Nm |
| Water pump | 12 Nm |
| Coolant pump - engine | |
| Spark plugs | 20 Nm |
| Fuel rail | 1)20 Nm 2)30 Nm |
| Crankshaft position (CKP) sensor/engine speed (RPM) sensor | 10 Nm |
| Camshaft position (CMP) sensor | 9 Nm |
| Lambda sensor (Oxygen) | 48 Nm |
| Knock sensor (KS) | 20 Nm |
| Oil filter | 28 Nm |
| Chassis tightening torques | |
| Front hub | 120 Nm+60° |
| Front hub - wheel bearing housing bolts | — |
| Front hub - wheel bearing housing bolts | |
| Rear hub | — |
| Rear hub | |
| Steering wheel | 48 Nm |
| Steering rack/box mounting | 110 Nm+180° |
| Steering track rod end | 140 Nm |
| Brake disc to hub Front | 10 Nm |
| Brake disc to hub - front | |
| Brake caliper to carrier Front | 35 Nm |
| Brake caliper/carrier to hub Front | 133 Nm+60° |
| Brake disc to hub Rear | 10 Nm |
| Brake disc to hub - rear | |
| Brake caliper to carrier Rear | 35 Nm |
| Brake caliper/carrier to hub Rear | 110 Nm+120° |
| Back plate to hub Rear | 9 Nm |
| ABS sensor Front | 9 Nm |
| ABS sensor Rear | 9 Nm |
| Road wheels | — |
Air conditioning
| No. of AC service connectors | 2 |
|---|---|
| Air conditioning restrictor type | Expansion valve |
| Compressor clutch/magnetic coupling | Yes |
| Compressor variable displacement solenoid | Yes |
| Air conditioning refrigerant Type | — |
| Do not mix R134a with R1234yf. | |
| Air conditioning refrigerant quantity grams | 650±10 |
| Air conditioning oil group | PAG |
| Air conditioning oil Type | SP-A2 |
| Air conditioning oil quantity cm³ | 80 |
| Oil quantity | |
| Air conditioning oil viscosity ISO | 46 |
Frequently asked questions
What is the firing order of the Land Rover Defender 5.0 P425?
The firing order for the Land Rover Defender 5.0 P425 (2024–2026) is 1-2-3-4-5-6-7-8.
How much oil does the Land Rover Defender 5.0 P425 take?
The Land Rover Defender 5.0 P425 (2024–2026) takes 8.0 litres of engine oil with the filter. The specified engine oil grade is SAE 0W-20 for all ambient temperatures, with oil specification STJLR.03.5006.
What are the valve clearances for the Land Rover Defender 5.0 P425?
Valve clearances on the Land Rover Defender 5.0 P425 (2024–2026) are hydraulic — they self-adjust, so no manual clearance figure applies.
What is the ignition timing for the Land Rover Defender 5.0 P425?
The ignition timing on the Land Rover Defender 5.0 P425 (2024–2026) is not adjustable.
What is the minimum brake disc thickness for the Land Rover Defender 5.0 P425?
Brake discs on the Land Rover Defender 5.0 P425 (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 5.0 P425 use?
The Land Rover Defender 5.0 P425 (2024–2026) uses a 12 V, 90 Ah battery (reserve capacity 150 minutes).