Ac mr43ts spark plug replacement cross reference?

[Guymontag]

My 3.0 alpha one lx calls for Ac mr43ts plugs I can't find anything that cross references the mr43ts just the mr43t. Does any one know what a replacement is or where I can get the mr43ts?

 

[alldodge]

That would be Lts as in MR43LTS

 

[Alumarine]

Are you sure it doesn't call for MR43LTS?
It's available at a lot of places.
It crosses to a NGK BPR6EFS.

I see I got beat by alldodge!

 

[Guymontag]

Mr43ts

 

[Alumarine]

I'm guessing that's a typo.
What's in it now?

 

[Guymontag]

I haven't changed it yet the boats 2 hrs away I was trying to get it in advance...

 

[Guymontag]

Hmmmm typo sounds fishy but I guess it is b/c I've been to West Marine, autozoneA, Walmart and Google. Can't find anything mr43ts. From what I understand the 3.0 and the 3.0 lx are the same motor with a different head one has a long reach plug and I've has a short plug. Any one have a 3.0lx , what are you using?

 

[alldodge]

The 3.0 came with 2 different plugs as you said depending on which head, 43LTS (NGK BP7HS Merc 33-816336Q) and 43T (NGK BP7HS Merc 33-97389)

To determine which you should have use the motor serial number and look it up here
https://www.mercruiserparts.com/4-cylinder-engines

 

[Guymontag]

Jeez I don't know who to trust here the serial on my motor ..
0f020311
The website says I need

33-898264001 SPARK PLUG (AC-MR43T)

However the motor plate says I need ac mr43ts ( which apparently doesn't exist)


Story of my life

 

[alldodge]

What plugs were in it?
Being a 1990-1994 3.0 it should be MR43T

 

[Guymontag]

I haven't taken the old plugs out yet boats 2 hrs away from me and a srote

 

[Maddog 412]

I haven't taken the old plugs out yet boats 2 hrs away from me and a srote

Here I am two years later with the same exact issue. My boat had champion long thread in it but I don't want to use those. What plugs did you go with?

 

[GA_Boater]

Here I am two years later with the same exact issue. My boat had champion long thread in it but I don't want to use those. What plugs did you go with?

He never came back and told all the people offering advice, so after 2 years its doubtful he will tell you. Start a new thread.

Closed.