Ford SB 289 302 351 Windsor 12 Point Steel Intake Manifold Bolt Kit Speedmaster air filter bases are

Speedmaster air filter bases are just what you need to build that custom air cleaner assembly

They feature bodies and / or secondary towers and feature brass secondary contacts (except direct fire coil on plug applications)

measuring 102mm

acceleration is more responsive

circle track and drag racing

Ford SB 289 302 351 Windsor 12 Point Steel Intake Manifold Bolt Kit Speedmaster air filter bases areSpeedmaster 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.