When to replace the Spark Plug on your MERCEDES-BENZ SLK
Recommended replacement interval for the part category Spark plug : 18 month / 30000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ SLK (R170) 200 (170.435) View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

All the parts you need to replace – Spark Plug for SLK (R170) and other MERCEDES-BENZ models
Tools
Replacement: spark plugs – MERCEDES-BENZ SLK (R170). Tools you need:
High-temperature anti-seize lubricant
Drive socket # E11
Drive socket # 16
Ratchet wrench
Torque wrench
Fender cover
Replacement: spark plugs – MERCEDES-BENZ SLK (R170). AUTODOC experts recommend:
  • The replacement procedure is the same for all spark plugs.
  • All work should be done with the engine stopped.
Replacement: spark plugs – MERCEDES-BENZ SLK (R170). Recommended sequence of steps:
  1. Step 1
    Open the hood.
    Step 2
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
    Step 3
    How to change Spark Plug on Mercedes SLK R170 1996 - free PDF and video manuals
    Detach the connector from the ignition coil.
  2. Step 4
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    Unscrew the ignition coil bracket. Use a drive socket #E11. Use a ratchet wrench.
  3. Step 5
    Mercedes SLK R170 200 2.0 Kompressor (170.444) 1998 Spark Plug replacement: free workshop manuals
    Take out the ignition coil from the spark plug well.
  4. Step 6
    Changing Spark Plug on MERCEDES-BENZ SLK (R170) 230 2.3 Kompressor (170.449) 1999 by yourself
    Unscrew the spark plugs. Use the spark plug socket #16. Use a ratchet wrench.
  5. Step 7
    How to remove MERCEDES-BENZ SLK 320 3.2 (170.465) 2000 Spark Plug - online easy-to-follow instructions
    Take out the spark plugs.
  6. Step 8
    How to replace Spark Plug on MERCEDES-BENZ SLK (R170) 2001: download PDF manuals and video instructions
    Apply a thin layer of a special high temperature anti-seize lubricant to the threads of the new spark plugs.
  7. Step 9
    How hard is it to do yourself: Spark Plug replacement on Mercedes SLK R170 32 AMG 3.2 Kompressor (170.466) 2002 - download illustrated guide
    Install the new spark plugs into their mounting seats.
  8. Step 10
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    Screw new spark plugs and tighten them. Use the spark plug socket #16. Use a torque wrench. Tighten it to 25 nm torque.
    Replacement: spark plugs – MERCEDES-BENZ SLK (R170). Professionals recommend:
    Don't tighten the plugs with excessive force. Exceeding tightening torque can damage the thread connection. Be careful when working with a spark plug wrench. Its skewing can cause damage to the threaded connection.
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DIY MERCEDES-BENZ SLK (R170) Spark Plug replacement - online guide
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