Bellhousing Bolt Kit by ARP These ARP bellhousing bolt kits are designed to securely hold your transmission bellhousing in place on the engine block. They are manufactured from ARP\’s durable 8740 heat-treated alloy and have a protective black oxide finish. The bolt kits come in your choice of standard hex head or smaller 12-point heads for additional clearance or to fit into tighter firewall applications. Features Fastener Head Style:Hex head Underhead Length (in.):1.378 in. Thread Size:M10 x 1.5 Fastener Material:Steel Fastener Finish:Black oxide Benefits Durable 8740 heat-treated alloy Have a protective black oxide finish Applications 1997 2004 Chevrolet Corvette 1998 2002 Pontiac Firebird Formula, Trans Am 1998 2002 Chevrolet Camaro Z/28, SS 2004 Pontiac GTO 2001 2005 Holden Monaro 1999 2005 Holden Statesman 2001 2004 HSV GTO 2001 2004 Corvette Z06 2004 2005 Cadillac CTS V-Series 2007 SSC Ultimate Aero TT What\’s In The Box? 8 – Bolts Warranty Manufacturers Standard Warranty