Some Volvos from the early 2000's call for a Champion RC8PYP8, but it doesn't seem to be obtainable anywhere. According to Champion, they never made such a plug, and if they did, the 8 at the end would mean a gap of .080 in! That also means it's a mistake because the gap is specified as .030, give or take.
I think it's supposed to say RC8PYPB. This makes sense since the gap for that plug is around .030 in, consistent with the owners manual, and other aftermarket plugs recommended for these Volvos. The Champion part number for the RC8PYPB is 7343.
Now, Volvo is known for having some rather serious errors in their owners manuals, especially of the time that the Champions were used about 10 years ago, such as specifying ATF for power steering systems that are supposed to take green CHF 11s.
I think it's supposed to say RC8PYPB. This makes sense since the gap for that plug is around .030 in, consistent with the owners manual, and other aftermarket plugs recommended for these Volvos. The Champion part number for the RC8PYPB is 7343.
Now, Volvo is known for having some rather serious errors in their owners manuals, especially of the time that the Champions were used about 10 years ago, such as specifying ATF for power steering systems that are supposed to take green CHF 11s.