Westerbeke genset parts

[rose_surfer]

My 89 3100 open has a westerbeke genset that needs some maintenance. For starters I'd like to replace the plugs and the manual just gives a westerbeke part number that doesn't seem to correspond to anything readily available. Anyone know where a good online source is for westerbeke parts, and/or what an alternative plug would be?

[Silver Rush]

Try this post:

http://clubsearay.com/archive/index.php/t-36430.html

[rose_surfer]

Thanks. Looks like ngk BPR5ES-11 may be a solution - at least for the newer 4.5 BCGB.