Land Rover2017–2021Technical specifications

Discovery 2.0 Si4: Technical specifications

Workshop data for the 2-litre petrol (engine code PT204). Covers engine, fluids, brakes, service, torques and air conditioning: the figures to check before a job or a parts order.

Updated 8 Sep 2026Common faults & fixes

Summary

Match the engine code (PT204) and chassis (L462) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Land Rover
Model: Discovery
Chassis: L462
Years: 2017–2021
Fuel: Petrol
Engine code: PT204

Performance & efficiency

Power: 221 kW (300 hp)
Engine size: 1,997 cc
Cylinders: 4 · DOHC
Compression ratio: 9.5:1
Fuel system: MFI-s(d)

Fluids & capacities

Engine oil (with the filter): 7.0 litres

All 81 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	4/DOHC
Capacity (Fiscal) cc	1997
Compression ratio :1	9,5
Suitable for unleaded petrol	Yes
Minimum octane rating RON	95
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 supply voltage + with ballast V	12,0

Firing order

The firing order for the Land Rover Discovery 2.0 Si4 (2017–2021) is 1-3-4-2.

Firing order	1-3-4-2

Valve clearances

Valve clearances on the Land Rover Discovery 2.0 Si4 (2017–2021) 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 Discovery 2.0 Si4 (2017–2021) takes 7.0 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.

Coolant

The listed coolant type is Havoline XLC. The recorded coolant colour is Orange. The listed total cooling-system capacity is 14.7 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
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	7.0
View more information	—
Other lubricants and capacities
Automatic transmission fluid Type	Shell L12108 (ZF Lifeguard 8)
Automatic transmission (drain & refill) litres	—
View more information	—
Filling and checking level
Automatic transmission (dry fill) litres	8.5
Automatic transmission - dry fill capacity
Differential oil grade - front SAE	75W-90 Castrol SAF-XO
Differential front/AT litres	0.51-0.54
Differential oil grade - rear SAE	75W-90 Castrol SAF-XO
Differential rear litres	0.82-0.85
Rear differential
Transfer box oil grade SAE	—
Transfer box oil grade
Transfer box litres	—
Transfer box oil
Coolant Type	Havoline XLC
Coolant Colour	Orange
Cooling system - total capacity litres	14.7
Brake fluid Type	DOT 4
Brake fluid classification	LRES22BF03
Brake fluid litres	0.9

Brakes & wear limits

Brake disc thickness

Brake discs on the Land Rover Discovery 2.0 Si4 (2017–2021) are replaced at a minimum thickness of 31 mm (ventilated) front and 23 mm (ventilated) rear.

Minimum disc thickness
Minimum disc thickness for replacement - ventilated Front	31 mm
Minimum disc thickness for replacement - ventilated Rear	23 mm

Brake disc and drum dimensions

Minimum disc thickness
Disc runout Front	0,05 mm
Disc runout Rear	0,07 mm
Minimum pad thickness Front	2 mm
Minimum pad thickness
Minimum pad thickness Rear	3 mm

Service & electrical

Ignition timing

The ignition timing on the Land Rover Discovery 2.0 Si4 (2017–2021) is not adjustable.

Ignition timing - basic BTDC °Engine/rpm	Not adjustable

Tuning and emissions

Ignition advance checks °Engine/rpm	ECM Controlled
Idle speed rpm	Not adjustable

Service checks and adjustments

Radiator cap bar	1,40
Thermostat opens °C	95-108

Fuel system

Fuel main pump delivery pressure bar	200 Max

Spark plugs

Spark plug Type	H4P3-12405 (ACA)
Electrode gap mm	0,60-0,65

Tightening torques

Cylinder head
Cylinder head instructions	—
Renew bolts	Yes
Other engine tightening torques
Oil pump to cylinder block	25 Nm
Sump bolts	—
View more information	—
Sump bolts
Sump drain bolt	25 Nm
Flywheel/driveplate	-/30 Nm+120°
Crankshaft pulley/damper bolts	37 Nm+90°
Camshaft sprocket/gear	25 Nm+60°
Camshaft carrier/cap	—
View more information	—
Camshaft carrier/cap
Inlet manifold to cylinder head	12 Nm
Water pump	12 Nm
Spark plugs	23 Nm
Fuel rail	1)20 Nm 2)30 Nm
Crankshaft position (CKP) sensor/engine speed (RPM) sensor	8 Nm
Camshaft position (CMP) sensor	8 Nm
Lambda sensor (Oxygen)	48 Nm
Knock sensor (KS)	20 Nm
Oil filter	27 Nm
Chassis tightening torques
Front hub	120 Nm+60°
Rear hub	120 Nm+60°
Steering wheel	48 Nm
Steering rack/box mounting	110 Nm+240°
Steering track rod end	140 Nm
Brake disc to hub Front	10 Nm
Brake caliper to carrier Front	35 Nm
Brake caliper/carrier to hub Front	133 Nm+60°
Brake disc to hub Rear	10 Nm
Rear brake disc to hub
Brake caliper to carrier Rear	35 Nm
Brake caliper/carrier to hub Rear	110 Nm+120°
ABS sensor Front	9 Nm
ABS sensor Rear	9 Nm
Road wheels	—

Air conditioning

Do not mix R134a with R1234yf.
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	—
Air conditioning refrigerant quantity grams	800±10
Air conditioning refrigerant quantity
Air conditioning oil group	PAG
Air conditioning oil Type	SPA2
Air conditioning oil quantity cm³	80

Frequently asked questions

What is the firing order of the Land Rover Discovery 2.0 Si4?

The firing order for the Land Rover Discovery 2.0 Si4 (2017–2021) is 1-3-4-2.

How much oil does the Land Rover Discovery 2.0 Si4 take?

What are the valve clearances for the Land Rover Discovery 2.0 Si4?

Valve clearances on the Land Rover Discovery 2.0 Si4 (2017–2021) are hydraulic — they self-adjust, so no manual clearance figure applies.

What is the ignition timing for the Land Rover Discovery 2.0 Si4?

The ignition timing on the Land Rover Discovery 2.0 Si4 (2017–2021) is not adjustable.

What is the minimum brake disc thickness for the Land Rover Discovery 2.0 Si4?

Brake discs on the Land Rover Discovery 2.0 Si4 (2017–2021) are replaced at a minimum thickness of 31 mm (ventilated) front and 23 mm (ventilated) rear.