NTN Bower 2631HD tapered roller bearing cup from catalog series 2600, made to ABMA Class 4 (Inch) tolerance. The bearing designation is 2631. A genuine NTN Bower part from Pro Gear and Transmission.Interchanges:Timken 2631$41.05FeaturesTapered roller bearing cup, bearing designation 2631Catalog series 2600Tolerance class ABMA Class 4 (Inch)Tech SpecsBearing designation: 2631Catalog series: 2600Tolerance class: ABMA Class 4 (Inch)