GM LS Header Bolts M8 x 1.25mm, 0.984" (25mm) UHL Black 12 Point Head, AF37-1012 Engine mounts and Hinges Part Number : AF400-12-4

Part Number : AF400-12-4

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Proflow's fillers are 6061-T6 billet aluminium machined and have Male 1

GM LS Header Bolts M8 x 1.25mm, 0.984" (25mm) UHL Black 12 Point Head, AF37-1012 Engine mounts and Hinges Part Number : AF400-12-4AF37 1012 GM LS Header Bolts M8 x 1. 25mm, 0. 984" (25mm) UHL Black Finish 12 Point Head, 8740 Material, Sold as a Pack of 12 When 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