GM LS Header Bolts M8 x 1.25mm, 1.181" (30mm) UHL - Black Finish Pants mild steel or 316 stainless

mild steel or 316 stainless steel weld flanges in all sizes from 31

Arp Uses A Premium Grade 8740 Alloy That Is Rated Far Superior To Aircraft Quality

Serious Performance applications

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GM LS Header Bolts M8 x 1.25mm, 1.181" (30mm) UHL - Black Finish Pants mild steel or 316 stainlessWhen installing aftermarket exhaust headers you will need new header bolts, factory exhaust manifold bolts won't work as the flange could be thicker or the original bolts could be damaged. These Aeroflow header bolts are made from chrome moly 8740 material for high strength properties. They are coated in a black oxide for protection and long lasting durability. Each bolt features a compact 12 point head which is ideal for use where space is minimal