Champion 7975 double-platinum plugs not recommended
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Joined: Jan 2014
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From: Republic of Texas
'99 and '05 E55 AMG
Champion 7975 double-platinum plugs not recommended
As the title says, I do not recommend the Champion 7975 double-platinum spark plugs. I installed them gapped at ~0.040" and 35,000 miles later, the electrodes had eroded to ~0.058" to 0.060". I strongly suspect this was the reason for the failure of cylinder #1 a few weeks ago as the gap on those two plugs was > 0.060". I bought 16 on sale and with rebate for $41; now it doesn't seem worth the money I saved.
Yesterday I installed a set of the Bosch FR6MPP332 spark plugs (in 2 1/4 hours) gapped at ~ 0.034". Cost was $120 for a set of 16.
FWIW, the factory installed plugs made it ~90,000 miles with no issues.
The photo shows a typical gap of the plugs I removed from the car versus the Bosch gap new.
Yesterday I installed a set of the Bosch FR6MPP332 spark plugs (in 2 1/4 hours) gapped at ~ 0.034". Cost was $120 for a set of 16.
FWIW, the factory installed plugs made it ~90,000 miles with no issues.
The photo shows a typical gap of the plugs I removed from the car versus the Bosch gap new.
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Joined: Sep 2014
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From: Worldwide
2007 Mercedes E63 AMG
my friends have blown many of these plugs up. they do not work for anything that makes more than 100hp.
MBWorld Fanatic!
Joined: Oct 2012
Posts: 1,427
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From: Florida
2002 CLK 55 AMG cabriolet Eurocharged
Champion plugs are good for lawnmowers and 4 cylinder Chrysler. Chevy same difference.
Stick with Nipiondenso, Bosch, NGK.
Cheers
RN12YC will not fit the chevy sorry
Stick with Nipiondenso, Bosch, NGK.
Cheers
RN12YC will not fit the chevy sorry
Last edited by GatorMB; Jun 26, 2017 at 07:27 PM. Reason: added content
