Iridium Spark Plugs for 2007 350 MAG

[surfinjoe]

I am planning on replacing the spark plugs in my motor and was wondering if anyone has upgraded ot Iridium plugs in a 350 MAG? If so, what type did you choose? I believe that the factory plugs are platinum.

 

[ardeprint]

I have. In fact, the new service bulletin for my engine's serial numbers calls for the Iridium plugs. They put a dent on the wallet at around $14 each. I recommend you look up the ones for your model. Also, look for the manufacturer part number and look in an auto parts store you might save up to $5 each. The ones for my 2002 Mercs are as follows.[h=3]Manufacturer: NGK ITR4A15
Mercruiser P#33-8M2018369[/h]

 

[Phlorida]

Rock Auto has excellent prices on NGK plugs. I paid less than $8 each for the plugs for my wife's BMW.

 

[surfinjoe]

Thanks for the quick feedback. Some people say not to use Iridium if you fog your motor, but if there is a service bulletin from Merc stating to use Iridium, then it must be OK.

I have. In fact, the new service bulletin for my engine's serial numbers calls for the Iridium plugs. They put a dent on the wallet at around $14 each. I recommend you look up the ones for your model. Also, look for the manufacturer part number and look in an auto parts store you might save up to $5 each. The ones for my 2002 Mercs are as follows.[h=3]Manufacturer: NGK ITR4A15
Mercruiser P#33-8M2018369[/h]

 

[ardeprint]

Just in case here is the service bulletin: http://ww2.justanswer.com/uploads/ROCKETBOAT/2008-12-09_042519_SPARK.pdf

Look on page two for the updates.

 

[surfinjoe]

Thanks! How's the weather in Miami? We finally hit the 80's here in Michigan!

 

[ardeprint]

The weather has been rainy the last few days. Last weekend was nice, but windy. Water is up to temperature! That's NICE!!!!

Enjoy the Lakes up there!

 

[surfinjoe]

I was on the lake yesterday. Water was a brisk 55 degrees. Warm enough for the dog but way too cold for me!

 

[Brite Idea]

I buy spark plugs at auto parts stores for half the price. You can also buy your cap and rotor there, same parts as Merc.

 

[ardeprint]

Cap and rotor from an auto parts store may not have spark suppression. Just an FYI.

 

[Brite Idea]

not so