Spark Plugs- MCM 350 Mag MPI

[DC20]

My engine calls for AC 41-932, they seam hard to find, have they been replaced?
Also on my manifold it says Ultra Low emissions- California, did all of these in 2005 come that way or did i get a Cali motor?

 

[Gary H NC]

Re: Spark Plugs- MCM 350 Mag MPI

That could be the stock number for the AC MR43T that is common in Mercruiser.
Sounds like you do have the California model.

Same plug...look here,I just looked it up and the number you posted is the stock number.

http://www.amazon.com/Delco-MR43T-SPARK-DELCO-PLUGS/dp/B0013WCDKY

 

[DC20]

Re: Spark Plugs- MCM 350 Mag MPI

Thanks Gary, the link you gave me lists both plug numbers. The number I posted came right off the decal on the motor. I wonder if there is a way to verify that it is the same plug?

 

[Fun Times]

Re: Spark Plugs- MCM 350 Mag MPI

http://ww2.justanswer.com/uploads/ROCKETBOAT/2008-12-09_042519_SPARK.pdf

You will need your engine serial number, Because there may be even a newer part number then what's in this link.

 

[Borchik]

Re: Spark Plugs- MCM 350 Mag MPI

use the 41-932, they are platinum plugs and need to be used, completely different than MR43T plugs. any GM car dealer should have them or I think even NAPA stocks them.

 

[DC20]

Re: Spark Plugs- MCM 350 Mag MPI

Looks like the 41-932 was replaced by 41-933 according to the bulletin from boat tech.
Napa does list the 933 plug but not the 932. Guess I will get the 933.
According to the bulletin they are serious about setting the gap.

 

[Don S]

Re: Spark Plugs- MCM 350 Mag MPI

Looks like the 41-932 was replaced by 41-933

That 41-933 should be 41-993

 

[DC20]

Re: Spark Plugs- MCM 350 Mag MPI

Oops, Thanks Don, still getting my coffee!