Originally Posted by Jim B.

I still miss my '91 740 but I can't for the life of me remember what plugs went in there.

But I'd trust what IPD says about it though. And they say Bosch.

http://www.ipdusa.com/Volvo-700/Engine/Filters-&-Tune-Up/Spark-Plugs/p-70-189-251-1124/