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hobieboy hobieboy is offline
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Join Date: May 2002
Location: Up North
Posts: 1,431
Bosch & NGK uses different numbering scheme.

NGK plugs - smaller # is colder (7 is colder than 8).
Bosch is reversed.

I think a NGK BP8 range is similar to Bosch WR4 range.
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87 930 K27HFS/B&B/Twin-Plug... Megasquirted
Old 02-16-2007, 07:11 AM
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