Holden 253 304 308 12 Point Black Oxide Intake Manifold Bolt Kit They are heat-treated prior to

They are heat-treated prior to thread rolling and machining and are rated at a whopping 190

durable upgrade for the front of your engine

but have profiled counterweights for less weight

Speedmaster alternator brackets add some shine to your engine accessories

Holden 253 304 308 12 Point Black Oxide Intake Manifold Bolt Kit They are heat-treated prior toSpeedmaster 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.