258 manifold vacuum plug size - JeepForum.com
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post #1 of 2 Old 07-22-2012, 05:24 PM Thread Starter
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1980 CJ7 
Join Date: Apr 2012
Location: Royal
Posts: 190
258 manifold vacuum plug size

Anyone know the size of the plugs that are In the 258 exhaust manifold?

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post #2 of 2 Old 07-23-2012, 10:56 AM
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1986 CJ7 
Join Date: Dec 2007
Location: Denver Colorado
Posts: 1,879
Are you talking about the air injection rail? 1/4" pipe tread. Take one of the hollow bolts to the hardware store and compare. Easer to find in brass in the plumbing section.
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