512772

Fits:

Chevrolet T6500 1997-2005

Chevrolet T7500 1997-2002

Ford F450 1999-2004

Ford F550 1999-2003

Ford F53 1999-2004

GMC C4500 1999-2004

GMC C6500 1999-2004

GMC C7500 1999-2004

S135 rear differentials

S150 rear differentials

Eaton TRUE TRAC

Posi Traction

Note: Fits the following  3.91-4.44 ratio’s 

Note: Picture may not be identical to product