Replacing spark plugs.

[Kidder522]

Hey fellas.

Just wondering If anyone out there has a spark plug number for an 07 lsv with the assault 325 mpi engine. I have had the boat for 3 years so I am not sure when the were replaced last. Boat runs fine but just thinking about replacing them.

Thoughts?

Richard.


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[MJHSupra]

Cat - MR43LTS - 0.045
No Cat - 41-993 or 41-101 - 0.04

From Indmar chart online



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[MJHSupra]

https://r.tapatalk.com/shareLink?url...5&share_type=t



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[Kidder522]

Ok. I’m confused. The first one and the second on conflict with the CAT numbers. My engine is non cat. Or did I miss read that?


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[VA LSV]

MR43LTS are standard plugs and 41-993 are iridium plugs for cat engines. AC Delco dropped their platinum plugs. I run Denso 4511 PT16TT Platinum TT in my 325 MPI. Good plug for a reasonable price.

[MJHSupra]

Yes. I did not know the number that was dropped.

I found this same chart on the Supra and Mastercraft forum

https://r.tapatalk.com/shareLink?url...6&share_type=t


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[Kidder522]

thanks for the information. Looking at replacing them this summer.