2002 S 500 spark plugs and wires - PeachParts Mercedes-Benz Forum

qlopp · #1 05-27-2010, 08:10 PM

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Originally Posted by Marcus

I went to Bosch dot com and looked up the part number for a set of ignition wires (all 16). For my car, a 2002 CLK430, the part number listed was 09850. It's probably the same for your's, but you should double check. Then I started hitting reputable Internet parts stores. I found them for $185.

Yeah, I saw that too. I have a fair amount of experience with "other" besides domestic vehicles (no MB experience however) and have purchased euro OE and OEM parts many times, so my detector went up when I saw a Bosch wire set for <$200. The pic doesn't look right, the price isn't high enough to feel confident that they are true OE, so I'm pretty sure these are Bosch aftermarket division parts, which I wouldn't touch no matter how cheap. The Bremi were only $200 and "looked" correct, but that price worries me also.

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The spark plugs for all M113's (430, 500, 55) with ME 2.8 (2001 and later) are Mercedes Benz part number 004159190326, which is Bosch part number FR8DPP33 - they are both the exact same part.

Thanks, that number is very helpful. It's nice of the local dealer to sell them for $20 each when they list for about $8 :-)

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Personally, I wouldn't change the wires unless they appear to be damaged (mine are still OE). I used a sparkplug wire remover (puller) to ensure they weren't damaged when I changed the plugs. They will probably be damaged if someone simply pulls them from mid-wire. Changing the plugs on an M113 is straightforward. Your engine bay may be larger, which will be beneficial for some plugs. I left the coil packs connected to the wiring harness, and the "coil side" of the spark plug wires attached. I simply unplugged the "plug side" of the spark plug wires, unbolted the coil packs, slid them back, and then changed the plugs. On my car, removing the windshield/headlight washer tank opened up a lot of room. Other than the driver's side / rear plug, the rest were straight forward. I couldn't see the driver's side rear. I had to use the Braille method.

I hope that helps.

We'll be changing the wires at any rate, he just wants it done and it's the only way I'll help him. Thanks for your very helpful reply. I'm glad it is as straight forward as it looks.