Optitorque Cummins 5.9/6.7 O.E.M. Exhaust manifold upgrade kit

$300.00

Description

Cummins 5.9/6.7 O.E.M. Exhaust manifold upgrade kit. Crafted from American manufactured aged and cold drawn high strength corrosion resistant stainless steel. The extended length rolled thread studs have 25% more stretch area than O.E.M. and other aftermarket manufacturers replacements. A large bottoming boss allows for even distribution of the increased clamp load over the entire threaded area resulting in extended fastener fatigue life. The integral 7mm external hex, aids in the ease of installation through gasket retention, manifold alignment and increased grip area for stud installation/removal. The heavy wall stainless steel spacers offer nearly 28% more contact area for thermal heat cycle stability and resistance to thermal loss of fastener pre-load. The extra long m10x1.25mm thread on (7) fasteners allows the reuse of the factory heat shield and all other factory attaching brackets making this the only true O.E.M. replacement kit available. The cold forged stainless steel 12 point nuts are manufactured from a formable high strength stainless steel alloy that resists thread galling and provides added socket wrenching clearance during installation and removal.