Bulkhead Workshop › Land Rover models › Range Rover L405 5.0 supercharged V8 petrol › Workshop guide › Spark plugs

Range Rover L405 5.0 supercharged V8 petrol: spark plugs

Ignition · Range Rover L405 (2012–21) · 2013–2021

How often: every 100,000 mi or 7 yrs, whichever comes first. Worn plugs cause misfires that can damage the catalytic converters.

Check the plug interval on your Maintenance Check Sheet; Land Rover's varies by engine.

Work safely: support the vehicle on axle stands, never a jack alone; let it cool first. Check figures against your workshop manual. You do this work at your own risk.

Parts

Spark plugs (long-life plugs to suit engine (one per cylinder)) LR032080

Tools

Plug socket
Torque wrench
Trim tools for coil covers

Step by step

Remove the engine covers and the coils one at a time.
Blow dirt out of the plug wells before removing each plug.
Fit the new plugs to the specified torque; don't use anti-seize unless your manual says so.
Refit the coils firmly and clear any misfire codes.

More Range Rover L405 5.0 supercharged V8 petrol servicing

Service: engine oil & filter every 16,000 mi or year
Pollen (cabin) filter every 16,000 mi or year
Air filter element every 32,000 mi or 2 yrs
Auxiliary belt & tensioner check every 16,000 mi or year
Coolant change (10-year) every 10 yrs
Brakes, tyres & suspension inspection every 16,000 mi or year
Brake fluid change every 3 yrs
Transfer box & locking-diff oil every 60,000 mi or 5 yrs
Automatic gearbox fluid & differentials every 60,000 mi or 6 yrs
Air suspension check every 16,000 mi or year
Electric parking brake check every 16,000 mi or year
Underbody & corrosion check every year
Annual safety inspection every year
Monthly walk-round checks every month

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