OptiTorque Patriot Series Main Stud Kit - Hex Nuts - 2-Bolt Mains - Chromoly - Black Oxide - Small Journal - Small Block Chevy H781C303XL Chevrolet: Silverado 1500 04 -

Chevrolet: Silverado 1500 04 - 04 6 L Engine

Auto/Manual Transmission

Many of their products are available in conventional aluminum or steel

1997-2001 Mercury MountaineerVehicle Applications: 1991 Ford Explorer Eddie Bauer

BMR designed the SP057s for street performance

OptiTorque Patriot Series Main Stud Kit - Hex Nuts - 2-Bolt Mains - Chromoly - Black Oxide - Small Journal - Small Block Chevy H781C303XL Chevrolet: Silverado 1500 04 -Product Description: Main Stud Kit Patriot Series Hex Nuts 2 Bolt Mains Chromoly Black Oxide Small Journal Small Block Chevy OptiTorque produces premium quality fasteners for a wide range of automotive applications. From stock rebuilds to hard core racing builds, OptiTorque fasteners are USA made and designed, featuring premium materials and designed to meet or exceed OEM specs.