496HO Plug recommendation

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04-26-2025 | 12:47 PM

Swamplizard

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From: South FL

496HO Plug recommendation

Hello All,

What plugs do we recommend for Merc 496HOs? Looking to do a tune up.

Thanks

04-27-2025 | 03:35 PM

buona_merdaOL25

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From: Dousman Wi

I’ve ran ngk tr55ix as a great substitute to the stock acdelco plug. I currently run ngk tr6 as a step colder option but I have a modified N/A application in my Baja.

04-28-2025 | 09:14 AM

Swamplizard

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From: South FL

Thanks - mine are bone stock so perhaps I should stick with what merc suggests. Thought perhaps things had changed over last 10 years. ;-)

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