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Confused about spark plugs - How many?

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SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

Confused about spark plugs - How many?

 
Old 04-15-2019, 04:14 PM
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SL 500 Hardtop Convert
Lightbulb Confused about spark plugs - How many?

I have read most of the spark plug threads on the forum, but I am still not sure how many spark plugs my 2004 SL500 has. 8 or 16? Searched all the factory manuals and could not really identify the number of my motor. Also there is no youtube video of the spark plug change for an R230. Any advice appreciated.
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Old 04-15-2019, 05:59 PM
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SL55, S500
16

The same as any M113k motor.

Just make sure you get the correct ones.

Check FCP Euro
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Old 04-15-2019, 06:55 PM
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Got them ordered. Thanks for your help.
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Old 04-20-2019, 02:42 PM
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Plugs from FCP Euro arrived yesterday, installed today. Old plugs were Bosch and looked like original (106K). Process of changing a bit challenging but very DIY. Hope to take the car out for a test drive today.
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