Change Car Spark Plugs Mercedes-Benz SLK

Change Car Spark Plugs

Easy 0h45–3h30 ~75–350£
Estimated time 0h45–3h30
Estimated labour cost ~75–350£
Difficulty Easy
Vehicles
SLK 1996-2004 4
  • 200 Kompressor, -LPG LPG,Petrol (111.958)
  • 230 Kompressor, -LPG LPG,Petrol (111.983)
  • 32 AMG Kompressor Petrol (112.960)
  • 320, -LPG LPG,Petrol (112.947)
SLK 2004-2010 7
  • 200 Kompressor, -LPG LPG,Petrol (271.944)
  • 200 Kompressor, -LPG LPG,Petrol (271.954)
  • 280, -LPG LPG,Petrol (272.942)
  • 350 Petrol (272.969)
  • 350, -LPG LPG,Petrol (272.963)
  • 55 AMG Petrol (113.989)
  • 55 AMG Petrol (113.989)
SLK 2011-2016 3
  • 250 BlueEFF Petrol (271.861)
  • 350 BlueEFF Petrol (276.956)
  • 55 AMG Petrol (152.980)

What is the role of Mercedes-Benz SLK spark plugs?

The spark plug generates a spark at the precise moment needed to ignite the air/fuel mixture in the combustion chamber of petrol (or LPG) engines. The engine management system controls ignition timing.

When should you change your Mercedes-Benz SLK spark plugs?

Manufacturers provide replacement recommendations; refer to your vehicle maintenance booklet. Generally replace every 60,000 km (45,000 km for severe use). Some vehicles with long-life plugs (titanium, platinum, iridium) can go 100,000–150,000 km.

How do I know if I need to change my Mercedes-Benz SLK spark plugs?

Via the EOBD system (mandatory since 2001 on petrol cars), faulty spark plugs will trigger fault codes, typically P0301–P0304 (misfire, cylinders 1–4). Symptoms include: difficulty starting, misfires, reduced engine power, increased fuel consumption.

Is it difficult to change Mercedes-Benz SLK spark plugs?

Difficulty level 2/5: technically easy but requires specific tools (spark plug wrench, torque wrench). Key points: wait for cold engine, clean plug well with compressed air before removal, never use a dropped plug, do not grease threads, hand-tighten then torque to specification.

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View your SLK maintenance plan (keep the SLK token) →

3 models covered

Model Year Range Engines covered Fuel
SLK 1996-2004 1996-2004 200 Kompressor, -LPG LPG,Petrol (111.958), 230 Kompressor, -LPG LPG,Petrol (111.983), 32 AMG Kompressor Petrol (112.960), 320, -LPG LPG,Petrol (112.947) LPG, Petrol
SLK 2004-2010 2004-2010 200 Kompressor, -LPG LPG,Petrol (271.944), 200 Kompressor, -LPG LPG,Petrol (271.954), 280, -LPG LPG,Petrol (272.942), 350 Petrol (272.969), 350, -LPG LPG,Petrol (272.963), 55 AMG Petrol (113.989), 55 AMG Petrol (113.989) LPG, Petrol
SLK 2011-2016 2011-2016 200 Petrol (274.920), 250 BlueEFF Petrol (271.861), 250 CDI Diesel (651.980), 300 Petrol (274.920), 350 BlueEFF Petrol (276.956), 55 AMG Petrol (152.980) Diesel, Petrol

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View the service schedule for your SLK →