Birfields are made out of 100% chromoly and are precision polished to remove any imperfections that may cause stress risers
4 8 GAS 2 2003-2004 Ford E-250 Base 4
9 6 GAS 2 1997-2001 Dodge Ram 1500 ST 5
(1) DM5051 - Universal spring plate
UPC 883584218340 ProxyNumber 21834 Width 6
Dana 44 Hub and Rotor, Big Bearing, 6 on 5.5" Spacing, 1977 and Newer Chevy / GM, (D44-6X5.5HR) trail-gear Birfields are made out ofDana 44 Hub and Rotor, Big Bearing, 6 on 5. 5" Spacing, 1977 and Newer Chevy GM If you have a 1976 and older Chevy GM Dana 44, you will need to change out the spindle to our large bearing spindle, PM706570X NB, for this hub to work. This is because the 1976 and older spindle uses a smaller inner bearing. The quickest way to know what spindle you have is to check the OD of the spindle where the inner bearing rides. If spindle has a 2" OD where the