Fitment： Part Number(s) 3041916 304-1916 304-1916-A For CAT 239D 249D 279C 279C2 279D 279D3 279DLRC 289C 289C2 289D 289D3 289DLRC 299C 299D 299D2 299D2XHP 299D3 299D3XE 299D3XHP 299DR 299DRXE 299DXHP Teeth: 17 Bolt Holes: 12 Package Include： 1*Drive Sprocket Notes： -If You Are Not Sure The Item 100% Fit For Your Vehicle Before Your Purchase. -Please Allow 1-3CM Differs Due To Manual Measurement. -Due To The Different Display And Different Light, The Picture May Not Reflect The Actual Color Of The Item. Thanks For Your Understanding. .