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The threaded holes are the air reactor [AIR] fitting, an exhaust gas recirculation [ERG] fitting or choke stove. Check out DormanProducts.com. copmagnet95@hotmail.com

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โˆ™ 2006-10-08 07:19:04
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Q: Why are there 2 threaded holes on the exhaust manifold of a 1995 Chevy Caprice Classic 5.7 liter but only 1 hole on the pipes that bolt onto it?
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