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		986 Forum - The Community for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical Chat
Original Plugs 04SE

Garage

Old

04-15-2016, 05:59 PM

#1

Muskoka Minute

Registered User

Join Date: Nov 2015

Location: Bracebridge, Ontario

Posts: 256

Garage

Plug # 14FGR7KQU

Does anybody know what the number in the middle (7) means? What does it mean if it is a 6?
What does this number represent?

Thanks

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My Beast 2004 Boxster SE #0174
- 3.8 with all the internal goodies, Under-mount Pulley, IPD Plenum, 996 Intake, Softronic Tune, 987 Factory Sport Exhaust, skid plates, IMS solution, Ohlins R&T, RSS Toe Links, Camber Plates, Michelin Pilot Super Sport on all 4 corners, Alpine Double Din c/w new speakers & amps.

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Old

04-15-2016, 06:43 PM

#2

Paul

Porsche "Purist"

Join Date: Aug 2003

Location: Wisconsin

Posts: 2,123

Garage

Heat range, 6 is colder than 7.

Heat Range Conversion Chart

http://www.sparkplugs.com/Data/uploads/Charts/Bosch_Numbering_System.jpg

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1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.

Last edited by Paul; 04-15-2016 at 06:47 PM.

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