| Model | Description | Core in Stock? | Click below for picture | Reman in Stock? |
| SX3, SX4, SX6 | 3 to 5HP belt drive airend. 72/54mm, Sigma 0 | No | picture | No |
| SM6, SM8, SM11 | 5 - 10HP belt drive airend. 72/54mm, Sigma 0 | No | picture | No |
| SK19, SK26, AS31, AS36, AS44 | 15 to 20HP belt drive airend. 105/80mm, Sigma 12 | No | picture | No |
| AS30, AS35, BS44 | 25 to 40HP belt drive airend. 105/80mm, Sigma 1A | Yes | picture | Yes |
| BS50, BS60 | 40 to 50HP belt drive airend. 150/102mm. Sigma II | Yes | picture | No |
| CS75, CS90, CS120 | 60 to 100HP belt drive airend. 160/120mm. Sigma II | Yes | picture | Yes |
| CS75,
CS90, CS120
Style 1
|
60 to 100HP belt drive airend. 160/120mm. Sigma 2C | Yes | picture | Yes |
| CS75, CS90, CS120 Style 2 | 60 to 100HP belt drive airend. 160/120mm. Sigma 2C | No | picture | No |
| CS91, CS121 | 60 to 100HP belt drive airend. 160/120mm. Sigma 25 | No | picture | No |
| DS140, DS220, ES240, ES280 Style 1 | 100 to 166HP belt drive airend. 250/187.5mm. Sigma 3 | No | picture | No |
| DS140, DS220, ES240, ES280 Style 2 | 100 to 166HP belt drive airend. 250/187.5mm. Sigma 3 | No | picture | No |
| DS140, DS220, ES240, ES280 Style 3 | 100 to 166HP belt drive airend. 250/187.5mm. Sigma 3 | No | picture | No |
| ES250, ES300 | 180 to 220HP belt drive airend. 346/259.5mm. Sigma 4 | No | picture | No |
| FS360, FS620 | 270 to 475HP belt drive airend. 346/259.5mm. Sigma 4 | No | picture | No |
Airend inventory changes frequently. Please call 1-800-257-3623 for current stock status and pricing.