Spark plugs
11-30-2018, 05:28 PM
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2015 C300, 2015 F-350 Platinum, 1969 Mach 1 428cj, 2007 Roadking
Spark plugs
Does anyone know the brand and part number for the spark plugs in a 2016 GLC 300 with the 2.0 turbo engine? 2 wheel drive if it makes a difference. Can't seem to find that info in the owners book.
12-01-2018, 02:57 PM
#2
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Bosch 0241140522 - required at 50K miles - please understand for this generation of MB engine - when the plugs are installed they must be "indexed"
See Maintenance Manual: https://www.mbusa.com/vcm/MB/Digital...Y16_GLC_MM.pdf
See Maintenance Manual: https://www.mbusa.com/vcm/MB/Digital...Y16_GLC_MM.pdf
12-01-2018, 06:25 PM
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Bosch 0241140522 - required at 50K miles - please understand for this generation of MB engine - when the plugs are installed they must be "indexed"
See Maintenance Manual: https://www.mbusa.com/vcm/MB/Digital...Y16_GLC_MM.pdf
See Maintenance Manual: https://www.mbusa.com/vcm/MB/Digital...Y16_GLC_MM.pdf
12-01-2018, 06:29 PM
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2019 GLC300 4matic
I also had never heard of spark plugs being indexed.
Here's a video I found. I do NOT know if the same description and installation guidance applies to our MB's.
Here's a video I found. I do NOT know if the same description and installation guidance applies to our MB's.
Last edited by fred9x; 12-01-2018 at 08:09 PM.
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12-01-2018, 06:33 PM
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12-01-2018, 06:33 PM
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https://mbworld.org/forums/e-class-w...zing-fact.html
3rd post in this thread I linked the doc about indexing from MB. It's not an issue as long as you use the correct plugs.
3rd post in this thread I linked the doc about indexing from MB. It's not an issue as long as you use the correct plugs.
12-01-2018, 09:53 PM
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https://mbworld.org/forums/e-class-w...zing-fact.html
3rd post in this thread I linked the doc about indexing from MB. It's not an issue as long as you use the correct plugs.
3rd post in this thread I linked the doc about indexing from MB. It's not an issue as long as you use the correct plugs.
Last edited by Chrisk03; 12-01-2018 at 10:00 PM.
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12-02-2018, 12:35 PM
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2015 C300, 2015 F-350 Platinum, 1969 Mach 1 428cj, 2007 Roadking
Bosch 0241140522 - required at 50K miles - please understand for this generation of MB engine - when the plugs are installed they must be "indexed"
See Maintenance Manual: https://www.mbusa.com/vcm/MB/Digital...Y16_GLC_MM.pdf
See Maintenance Manual: https://www.mbusa.com/vcm/MB/Digital...Y16_GLC_MM.pdf
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12-02-2018, 10:15 PM
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12-03-2018, 12:30 PM
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I have never trusted factory pre-gaps. I've found too many so called pre-gapped plugs out of spec. Doesn't take but a few minutes to verify four or six plugs.
12-03-2018, 02:39 PM
#13
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Agreed, but more often than not, people who use traditional gapping tools do more harm than good with these fine wire iridium plugs. They have to be adjusted carefully.
12-03-2018, 04:25 PM
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Joe (and MB) have done an excellent job explaining how important/critical it is to use OEM plugs AND to torque them to 23 Nm . I'm now thinking I need to have my dealership change them because I have no confidence that my Home Depot variety torque wrench is properly calibrated.
12-03-2018, 05:43 PM
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Joe (and MB) have done an excellent job explaining how important/critical it is to use OEM plugs AND to torque them to 23 Nm . I'm now thinking I need to have my dealership change them because I have no confidence that my Home Depot variety torque wrench is properly calibrated.
12-03-2018, 05:48 PM
#16
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Any torque wrench will suffice, it's not that critical. The point is to be close, not 100% perfect anyway. There is still a range the plug can be in even at that torque, so even with a fairly inaccurate torque wrench, lets say 10% off, you are barely changing the value and it will not make a difference.
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