Ngk 8f8s = 8b8s

tomlong · 06-16-2022, 07:27 PM

Placed an order for the BMW "high power" NGK spark plugs SILZKBR8F8S via Bimmerworld BUT instead received SILZKGR8B8S. They are aware I ordered a set of 8F8S plugs. See picking ticket.

I was not aware both plugs are equivalent. Is Bimmerworld correct? Or should I request 8F8S plugs? Or are the 8F8S plugs going away and 8B8S supersedes it?

TopJimmy · 06-16-2022, 07:41 PM

Wrong part. Both FCP and NGK compatibility does not match our cars.

You ordered right, but they picked and shipped a wrong part. Since the NGK# is so close someone probably put a wrong part in the right bin, then another person grabbed it.

TopJimmy · 06-17-2022, 08:00 AM

These are the NGK D8S (97506) and the BMW F8S (High power)

mike@x-ph.com · 06-17-2022, 08:24 AM

+1 for 97506 , we have them in stock BTW

krudmunk · 06-17-2022, 02:17 PM

F8S is for E85 and flex fuel.

D8S is ok for stage 2 91 or 93 tune. You can use this for flex fuel but be prepared to change frequently.

tomlong · 06-17-2022, 04:36 PM

Thanks guys — Bimmerworld shipped me a set of 8B8S (not 8D8S) … don't need/want 97506 either.

They are still standing behind their word that 8B8S supersedes 8F8S. 🤔

tomlong · 06-18-2022, 05:24 PM

Went and purchased 2 sets of 8F8S plugs from the dealership. Will return the 8B8S plugs to Bimmerworld. Problem solved.

TopJimmy · 06-19-2022, 06:43 AM

Why not FCP Euro?
I'm on my second "free replacement" set.

tomlong · 06-19-2022, 04:15 PM

Quote:

Originally Posted by TopJimmy

Why not FCP Euro?
I'm on my second "free replacement" set.

Instant gratification

sly1types · 06-20-2022, 06:02 PM

Quote:

Originally Posted by TopJimmy

Why not FCP Euro?
I'm on my second "free replacement" set.

Really? do they have to been pretty rough looking? I usually replace mine once a year every 3k miles or so.

TopJimmy · 06-20-2022, 07:28 PM

Quote:

Originally Posted by sly1types

Quote:

Originally Posted by TopJimmy

Why not FCP Euro?
I'm on my second "free replacement" set.

Really? do they have to been pretty rough looking? I usually replace mine once a year every 3k miles or so.

Not rough…as long as they've been used some. They've never given me any problem.

McBobby Jr · 06-28-2022, 09:49 PM

So are the 8B8S plugs successors to the 8F8S plugs? Or are they a completely different plug?

tomlong · 06-28-2022, 11:24 PM

Verdict is still out. Bimmerworld says the 8B8S is the successor to the 8F8S while Turner Motorsports says the Brisk plugs are a compatible replacement for the 8F8S.

The 8F8S is exclusive to BMW so even NGK won't fully know. I reached out to Bend Calibration and asked and he took it upon himself to call NGK directly but after speaking with them this subject still remains inconclusive. 🤷*♂️

harry$ · 09-22-2022, 03:22 PM

Hey Guys,

Can it be verifyed that the 8F8S/BMW 12120042724 last a lot longer than the 97506?

Thanks.

TopJimmy · 09-22-2022, 05:40 PM

Quote:

Originally Posted by harry$

Hey Guys,

Can it be verifyed that the 8F8S/BMW 12120042724 last a lot longer than the 97506?

Thanks.

They're basically the same plug in a different heat range. The NGK 97506 is marked xxxD8S and the BMW High Power is xxxF8S (as you said). When used in the proper ranges they should have the same lifecycles.

harry$ · 09-22-2022, 05:53 PM

Quote:

Originally Posted by TopJimmy

They're basically the same plug in a different heat range. The NGK 97506 is marked xxxD8S and the BMW High Power is xxxF8S (as you said). When used in the proper ranges they should have the same lifecycles.

So for a S55 stock tubo runing stage 2+ E85 what would be the plug of choice for this tune?

Is the 97506 2 steps colder than stock and the F8S 1 step colder than stock?

Thanks.

TopJimmy · 09-22-2022, 07:49 PM

Quote:

Originally Posted by harry$

Quote:

Originally Posted by TopJimmy

They're basically the same plug in a different heat range. The NGK 97506 is marked xxxD8S and the BMW High Power is xxxF8S (as you said). When used in the proper ranges they should have the same lifecycles.

So for a S55 stock tubo runing stage 2+ E85 what would be the plug of choice for this tune?

Is the 97506 2 steps colder than stock and the F8S 1 step colder than stock?

Thanks.

NGKs will do fine for any OTS tune, 0.023" gap.

I only pick the High Power ones for high boost custom E85 tunes.

harry$ · 09-22-2022, 11:23 PM

Quote:

Originally Posted by TopJimmy

NGKs will do fine for any OTS tune, 0.023" gap.

I only pick the High Power ones for high boost custom E85 tunes.

Would then a S55 custom E85 S2+ 26-27psi peak boost, max effort stock turbo tune qualify for the High Power F8S?

Thanks.

TopJimmy · 09-23-2022, 08:03 AM

Quote:

Originally Posted by harry$

Quote:

Originally Posted by TopJimmy

NGKs will do fine for any OTS tune, 0.023" gap.

I only pick the High Power ones for high boost custom E85 tunes.

Would then a S55 custom E85 S2+ 26-27psi peak boost, max effort stock turbo tune qualify for the High Power F8S?

Thanks.

I still pick NGKs at 30PSI boost or less.
Your custom tuner would advise best on plug and gap for their tune.

06-16-2022, 07:27 PM	#1
tomlong Captain 617 Rep 600 Posts Drives: F80 M3 Sedan Join Date: Sep 2019 Location: Chicago iTrader: (0)	Ngk 8f8s = 8b8s Placed an order for the BMW "high power" NGK spark plugs SILZKBR8F8S via Bimmerworld BUT instead received SILZKGR8B8S. They are aware I ordered a set of 8F8S plugs. See picking ticket. I was not aware both plugs are equivalent. Is Bimmerworld correct? Or should I request 8F8S plugs? Or are the 8F8S plugs going away and 8B8S supersedes it? Attached Images __________________ https://www.instagram.com/tomlong/
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06-16-2022, 07:41 PM	#2
TopJimmy Major General 5450 Rep 5,139 Posts Drives: 2023 M3 Comp xDrive Join Date: Jul 2019 Location: Chester County, PA iTrader: (5)	Wrong part. Both FCP and NGK compatibility does not match our cars. You ordered right, but they picked and shipped a wrong part. Since the NGK# is so close someone probably put a wrong part in the right bin, then another person grabbed it. __________________ '18 F80 Base 6MT \| '19 F82 Exec DCT \| '18 F82 Comp Exec DCT \| '23 G80cx
	Appreciate 0 Quote

06-17-2022, 08:00 AM	#3
TopJimmy Major General 5450 Rep 5,139 Posts Drives: 2023 M3 Comp xDrive Join Date: Jul 2019 Location: Chester County, PA iTrader: (5)	These are the NGK D8S (97506) and the BMW F8S (High power) Attached Images __________________ '18 F80 Base 6MT \| '19 F82 Exec DCT \| '18 F82 Comp Exec DCT \| '23 G80cx
	Appreciate 1 sly1types431.50 Quote

06-17-2022, 08:24 AM	#4
mike@x-ph.com BimmerPost Supporting Vendor 24059 Rep 190,575 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	+1 for 97506 , we have them in stock BTW __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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06-17-2022, 02:17 PM	#5
krudmunk Captain 340 Rep 812 Posts Drives: F80 M3 Join Date: Apr 2020 Location: San Francisco iTrader: (3)	F8S is for E85 and flex fuel. D8S is ok for stage 2 91 or 93 tune. You can use this for flex fuel but be prepared to change frequently.
	Appreciate 0 Quote

06-17-2022, 04:36 PM	#6
tomlong Captain 617 Rep 600 Posts Drives: F80 M3 Sedan Join Date: Sep 2019 Location: Chicago iTrader: (0)	Thanks guys — Bimmerworld shipped me a set of 8B8S (not 8D8S) … don't need/want 97506 either. They are still standing behind their word that 8B8S supersedes 8F8S. 🤔 Attached Images __________________ https://www.instagram.com/tomlong/
	Appreciate 0 Quote

06-18-2022, 05:24 PM	#7
tomlong Captain 617 Rep 600 Posts Drives: F80 M3 Sedan Join Date: Sep 2019 Location: Chicago iTrader: (0)	Went and purchased 2 sets of 8F8S plugs from the dealership. Will return the 8B8S plugs to Bimmerworld. Problem solved. Attached Images __________________ https://www.instagram.com/tomlong/
	Appreciate 1 sly1types431.50 Quote

06-19-2022, 06:43 AM	#8
TopJimmy Major General 5450 Rep 5,139 Posts Drives: 2023 M3 Comp xDrive Join Date: Jul 2019 Location: Chester County, PA iTrader: (5)	Why not FCP Euro? I'm on my second "free replacement" set. __________________ '18 F80 Base 6MT \| '19 F82 Exec DCT \| '18 F82 Comp Exec DCT \| '23 G80cx
	Appreciate 0 Quote

06-28-2022, 09:49 PM	#12
McBobby Jr Lieutenant 211 Rep 574 Posts Drives: '18 240i xDrive Join Date: Mar 2020 Location: Anchorage, AK iTrader: (0)	So are the 8B8S plugs successors to the 8F8S plugs? Or are they a completely different plug? __________________ current '18 F22 240i xDrive - FBO '16 F82 M4 ZCP - FBO previous '08 E90 335i Montego Blue
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06-28-2022, 11:24 PM	#13
tomlong Captain 617 Rep 600 Posts Drives: F80 M3 Sedan Join Date: Sep 2019 Location: Chicago iTrader: (0)	Verdict is still out. Bimmerworld says the 8B8S is the successor to the 8F8S while Turner Motorsports says the Brisk plugs are a compatible replacement for the 8F8S. The 8F8S is exclusive to BMW so even NGK won't fully know. I reached out to Bend Calibration and asked and he took it upon himself to call NGK directly but after speaking with them this subject still remains inconclusive. 🤷*♂️ __________________ https://www.instagram.com/tomlong/
	Appreciate 0 Quote

09-22-2022, 03:22 PM	#14
harry$ Second Lieutenant 20 Rep 246 Posts Drives: 2015 M4 Join Date: May 2006 Location: Burnaby,BC,Canada iTrader: (0)	Hey Guys, Can it be verifyed that the 8F8S/BMW 12120042724 last a lot longer than the 97506? Thanks.
	Appreciate 0 Quote

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