Romac Steel Blower Crank Hub Suit BB Chev, 6-Bolt, Dual Keyway, Neutral Balance (RO0405B)

Romac blower hubs are made from 4340 grade Steel, for Street, Strip or Marine applications with dual keyways. They have a STD 3/16" and 1⁄4" 180 degrees opposite keyways. All Blown Hubs come with a larger seal boss diameter. Hubs are available in External or Neutral Balance configurations. Front hub face has standard 6 Bolt pattern with a 2" inch register which suits standard blower pulleys.