NGK is the largest brand of spark plugs in the marine business. Listed below is a range of outboard and jet ski plugs that will cover most of your needs.
RTM Cat NGK Part For
MGA300 BR7HS-10 Outboard
MGA302 BR8HS-10 Outboard
MGA304 BP8H-N-10 Outboard
MGA306 BPZ8HS-10 Outboard
MGA308 B8HS-10 Outboard
MGA310 BUHW-2 Outboard
MGA312 DPR6EA-9 Outboard
MGA314 BUHW Outboard
MGA316 DR7EA Outboard
MGA318 BPR7HS-10 Outboard
MGA320 DCPR6E Outboard
MGA322 IZFR5J Outboard
MGA324 B7HS Outboard
MGA326 BP8HS-15 Outboard
MGA328 BUZHW-2 Outboard
MGA330 BUZ8H Outboard
MGA332 BR8ES PWC
MGA334 BR9ES PWC
MGA336 BR8HS PWC
MGA338 DCPR8E PWC