Roger :
The 4232 is the Bosch part number for a set of 4 WR7BP plugs. My local
store only stocks them in sets of 6, which carry a different 4-digit part
number, but has no objection to selling me 4 at a time. (Sorry, don't
recall the 4-digit number.)
Don't know if it was included in the TRA article, but Ken has previously
claimed to measure a 5hp increase on the dyno, from switching to the WR7BP
plugs. YMMV <g>
Randall
Roger Colson wrote :
>
> Called my local parts center and they didn't have either number in
> stock. 4232 was not in their computer, but WR7BP had stock at
> another store. After a store to store transfer I picked up a set of
> WR7BP this morning. Really strange thing, The package has a
> BIG 4232 on it and in small print WR7BP.
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