Trouble determining correct spark plug

[poolecw]

When I use the iboats tool for determining the correct sparkplug for my motor, it gives about 40 different model numbers. Could somene give me a hand? I have a 1984 Johnson 150 V6.

Thanks.

 

[Bosunsmate]

[h=1]UL77V is what i have listed[/h]

 

[poolecw]

Thanks. That is one of the part numbers that I see.

 

[Vic.S]

Thanks. That is one of the part numbers that I see.

UL77V or L16V Surface Gap is what I find.
UL77V were the plugs originally fitted too