This is a new sprocket that fits a wide range of the smaller series Caterpillar solid mount undercarriage style track loaders. This sprocket has twelve mounting bolt holes with fifteen drive teeth. The 304-1870 is a direct replacement sprocket for these models: 259D, 239D, 249D, 259B3, 239DLRC, 259DLRC, 249DLRC. Drive sprockets should always be installed when also installing new rubber tracks to prevent pulling out the links.
We guarantee fit on the following models and serial number breaks:
Caterpillar 239-D
- All Serial Breaks through 239-DLRC
Caterpillar 249-D
- All Serial Breaks through 249-DLRC
Caterpillar 259-B3
Caterpillar 259-D
- All Serial Breaks through 259-DLRC