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Old 02-08-2017, 09:56 PM
Registered User
Join Date: Jul 2016
Location: La Porte In
Posts: 12
sl500 spark plugs

Hi guys, getting ready to change plugs,
2000 sl500. what's everyone buying?
Bosch oem or Bosch Iridium ?
Car is only driven in summer.
Thanks in advance

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Old 02-08-2017, 10:26 PM
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Join Date: Oct 2006
Location: Beachwood, NJ
Posts: 462
Bosch OEM in my vehicles.

1987 300SDL
1991 300SL
1990 560SEL
2001 ML320

1969 200D 1979-82
1983 300SD 1984-85
1972 250C 1982-02
1995 S350 2011
1997 S320 2012
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Old 04-23-2017, 04:19 PM
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Join Date: Nov 2000
Location: Vernon, CT
Posts: 1,848
I too am thinking of changing out the plugs on our '99 SL500, all 16 of them. While using OEM Bosch or Beru is a given. Which one, from Pelican's parts catalog? Per the owner's manual, the car takes either Bosch F8DPER or Beru 14 FGH DPUR. We just got this car last June and I just pulled one of the plugs and what is in there now is the Bosch F8 DPER, which is not listed in the online catalog. The Beru is listed, but the picture shows it to be an iridium plug. As a matter of fact just about every picture of a plug in the Pelican catalog is an iridium plug, which is clearly not what the car calls for.

Also, at what mile mark are supposed to replace the plugs? I have the owners manual, but am missing the maintenance schedule book.
1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member
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Old 04-24-2017, 12:54 AM
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Join Date: Nov 2004
Location: Dallas, TX
Posts: 5,036
Bosch , i think that they're about $3 each. Make sure you get the plug wire wrench as it makes the job easy.
With best regards

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Old 04-25-2017, 07:15 AM
ejboyd5's Avatar
Registered User
Join Date: Aug 2004
Location: Southold, NY
Posts: 289
NGK comes highly recommended by many - do a search for yourself.

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