| Flexnumber | Piston | Piston Type | Top Plate Hole/Stud Qty. | Bottom Plate Hole/Stud Qty. | Top Plate Dia. | Bottom Plate Dia. | Collapsed Height | Type | Remarks |
| 1T15L-4 | 9546 | P | 2 | 4 | 9 | 9.75 | 6.9 | Rolling Lobe | Piston replaced by 9550 |
| Flexnumber | Piston | Piston Type | Top Plate Hole/Stud Qty. | Bottom Plate Hole/Stud Qty. | Top Plate Dia. | Bottom Plate Dia. | Collapsed Height | Type | Remarks |
| 1T15L-4 | 9546 | P | 2 | 4 | 9 | 9.75 | 6.9 | Rolling Lobe | Piston replaced by 9550 |