Holden 253 304 308 12 Point Black Oxide Intake Manifold Bolt Kit Made from premium materials and

Made from premium materials and built to exacting tolerances

Speedmaster aluminum valve covers feature a classic raised

Perfect for replacing missing or damaged mounting caps

Speedmaster Chevy LS2 rotating assembly featuring a precision-ground forged 4340 steel crankshaft

Precision CNC-machined threads to ensure optimum seat pressure

Holden 253 304 308 12 Point Black Oxide Intake Manifold Bolt Kit Made from premium materials andSpeedmaster black oxide coated chromoly intake manifold bolts are rated at 170,000 psi. They're precision machined for optimum thread engagement and have a wide area flange for better load distribution. They also feature precision rolled threads, which prevent galling, while promoting more consistent torque loading.