HD1221
Non Lock-Up
Diameter
Bolt Circle
13.50
11.50
Mount
Hub
Pilot
Spline
Stall
6 Holes Threaded
Milled Flats
D: 1.703
25
1700-1900
Converter Codes: 221,29530317,29530319,29538397,29538528
  • Mounting Thread Size: 10mm x 1.5
  • Ring Gear: No
  • Visible Markers: Black Sticker
  • Billet Cover: Yes
Application Fitments
2004-2006 Chevrolet Silverado 2500 HD CID 496 8.1 Liter 1000
2001-2003 Chevrolet Silverado 2500 HD CID 496 8.1 Liter 1000/M74