Fits 1965-1990 Chevrolet 396-454 Mark IV Big Block. Square Ports, 2.09 Inch GM Avalanche/Escalade/Sierra/Sierra Limited/Silverado/Silverado LD Superior Clamping Load & Strength

Superior Clamping Load & Strength - Far exceeds factory torque-to-yield bolts

Returns vehicle to stock when reversing

Drop torsion bar brackets and a rugged front skid plate proudly display laser-cut RC branding for that unmistakable Rough Country look

• (5) -6 to 9/16”-18 Straight Male Fittings

Use appropriate ball joint separation tool (OTC 204592)

Fits 1965-1990 Chevrolet 396-454 Mark IV Big Block. Square Ports, 2.09 Inch GM Avalanche/Escalade/Sierra/Sierra Limited/Silverado/Silverado LD Superior Clamping Load & StrengthManufactured from high temperature steel core graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp load. Can be