New 2004 GM 3.0 spark plugs?

[ss9940]

Hi all!<br /><br />Got another problem: I just broke off a CHAMPION RS12YC spark plug that was installed in my new engine. Now, the problem is i can't find a seller that has that type of spark plug in my country. Well, i decided to switch to NGK. The equivalent should be BPR5EFS, according to what a salesman told me. Is this the correct spark plug?<br /><br />thanx

 

[Dunaruna]

Re: New 2004 GM 3.0 spark plugs?

Yes, that's the correct cross reference.<br /><br />Aldo

 

[Don S]

Re: New 2004 GM 3.0 spark plugs?

While that may be the correct equivalent for the RS12YC, that is also the wrong plug for the engine. Personally any Champion plug is the wrong plug IMHO.<br />But, the correct NGK plug for the 3.0L is the BPR6EFS according to the Mercruiser parts catalog and service manual.

 

[kozman01]

Re: New 2004 GM 3.0 spark plugs?

Don, what's the gap on that plug? Thanks!

 

[Don S]

Re: New 2004 GM 3.0 spark plugs?

.035

 

[kozman01]

Re: New 2004 GM 3.0 spark plugs?

Don. First, thanks but I have another question. I checked my Operation, Maintenance and Warranty Manual and it's telling me that I should use an AC-MR43LTS plug with a gap set at .045. This plug does not cross reference to the NGK you advised to use. My motor is an 04' 3.0L as well. Can you advise further. I'd rather use the NGK's but I'm looking for your, or anyone's for that matter, input. Thanks again.

 

[vipzach]

Re: New 2004 GM 3.0 spark plugs?

The mr43lts is what I use for my 3.0. I don't have any problems with them or complaints.

 

[kozman01]

Re: New 2004 GM 3.0 spark plugs?

Do you gap at .035 or .045?

 

[Joenic]

Re: New 2004 GM 3.0 spark plugs?

I also use the mr43lts and gap at .035