Holden 253 304 308 12 Point Black Oxide Intake Manifold Bolt Kit They are made of aluminum

They are made of aluminum and feature a natural finish

Bronze gears absorb the increased wear in special cams and magnetos and are easily replaced before costly damage to the camshaft gear occurs

This units require the use of carrier bearing LM102949 / LM102910

Match your camshaft with Speedmaster iron distributor gears

Speedmaster radiator overflow tanks are both functional and stunning to look at

Holden 253 304 308 12 Point Black Oxide Intake Manifold Bolt Kit They are made of aluminumSpeedmaster 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.