Spark Plugs for a 1985 Mercruiser 3.0 Alpha One 140hp

1985 Century Mustang

1985 Century Mustang

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Can anyone recommend a good plug for my engine. 1985 Mercruiser A1-G1 3.0 140 HP
I'm currently using AC Delco MR43LTS, but they need to be replaced. If so, are the NGKs better, and what would be the correct plug # for them.
 
nola mike

nola mike

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The delcos are corrosion resistant; afaik they're the only ones. After having a close call with ngks a while back I'll stick with the delcos whenever possible
 
Bondo

Bondo

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1985 Century Mustang said:
Can anyone recommend a good plug for my engine. 1985 Mercruiser A1-G1 3.0 140 HP
I'm currently using AC Delco MR43LTST, but they need to be replaced. If so, are the NGKs better, and what would be the correct plug # for them.
Click to expand...
Ayuh,......... Those are too long, should be MR 43T,.....
 
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