ACDelco MR43T Spark Plug

Product Specs:

• GM part #5613438
• None automotive spark plug
• Fit’s most carbureted & some throttle body injection engines in tournament ski and wakeboard boats.
• Gap to .035 on most indmar that require this spark plug
• Used on pre-Vortec cylinder heads
• Make sure to use anti-seize on aluminum cylinder heads (all Hammerheads & Corvette engines)
• Use Dielectric Grease to avoid spark plug boots from sicking & tearing
• ****Sold individually****

Bakes Resource Library:

• Indmar Spark Plug & Spark Plug Wire Reference Chart (PDF)