Nodular Case case. Moser's Custom built 9" W/nodular iron case, Will only work with 28, 31, 33, or 35 spline Differential. All Center Sections are assembled with the following Moser Engineering designed and manufactured in the USA components;.
Moser 9" Ford 3rd Member With Super Lightweight Case (28,31, Or 33 Spline)
Moser 9" Ford Complete Built To Order Third Member W/Aluminum Bolt Thru Case
Moser 9" Ford Complete Built To Order Center Section / Third Member
Moser 9" Ford PRO Complete Built To Order Center Section / Third Member
Moser Engineering Ford 9 in. Third Member Assembly 3MNC31AN370