Recently bought a 2002 310 TBI Mastercraft X-star. It just turned over 300 hours so I figured I would go and replace the spark plugs. First owner told me he never changed the plugs so I figured I would check a plug and just replace it with what is in there. The plug read AC 41-932 so I went to NAPA and picked up 8 for about $60. I found a couple posts on line that say the original plug for that motor is an MR43LTS. What's the scoop? Did my boat have the wrong plugs installed from the get go? Will the AC 41-932 be OK in my boat? Obviously they have been working for the first 300 hours? Any suggestions?
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