Ford SB / Mopar BB 0.507" OD 0.343" ID 2.087" Intake Valve Guide These Speedmaster valve springs are

These Speedmaster valve springs are better-designed valve springs using state-of-the-art machinery for purpose-built racing engines

They feature rotary swaged ends are prelubed for smooth operation

These Speedmaster filters are washable and reusable

Embroidered Speedmaster logo

and an advanced design to absorb engine vibrations

Ford SB / Mopar BB 0.507" OD 0.343" ID 2.087" Intake Valve Guide These Speedmaster valve springs areSpeedmaster valve guides are constructed from high quality bronze for durability and wear, and built to exacting tolerances, they replace your existing worn or damaged valve guides. These guides are offered in a variety of diameters to suit your application..