| 1B4349WA | Seal - HPC, 17 STG | Optimum Engineering & Manufacturing Inc | — | — | Consumables / Hardware | PMA |
| 1B7515WA | Cover | Optimum Engineering & Manufacturing Inc | — | — | Consumables / Hardware | PMA |
| 2041456-3WA | Gear - Face Clutch | Optimum Engineering & Manufacturing Inc | | — | Consumables / Hardware | PMA |
| 2041870-1WA | Cam Assembly | Optimum Engineering & Manufacturing Inc | | — | Consumables / Hardware | PMA |
| 2041870-3WA | Cam Assembly | Optimum Engineering & Manufacturing Inc | | — | Consumables / Hardware | PMA |
| 207217WA | Gear, Impeller Pinion | Optimum Engineering & Manufacturing Inc | — | 21 | Environmental / Cabin | PMA |
| 214633-1WA | Bearings, Fixed, Matched Set | Optimum Engineering & Manufacturing Inc | — | 21 | Environmental / Cabin | PMA |
| 214636-1WA | Bearing, Pressurized, Driver | Optimum Engineering & Manufacturing Inc | — | 24 | Electromechanical | PMA |
| 214637-1WA | Bearing, Pressurized, Driven | Optimum Engineering & Manufacturing Inc | — | 24 | Electromechanical | PMA |
| 214837WA | Shaft, Boost Stage | Optimum Engineering & Manufacturing Inc | — | — | Consumables / Hardware | PMA |
| 214844-1WA | Bearings, Matched Set, Hydraulic | Optimum Engineering & Manufacturing Inc | — | 29 | Hydraulics | PMA |
| 214847-1WA | Gears, Matched Set, Hydraulic | Optimum Engineering & Manufacturing Inc | — | 11 | Interior / Furnishings | PMA |
| 214850-1WA | Bearing, Pressurized Drive, Hydraulic | Optimum Engineering & Manufacturing Inc | — | 29 | Hydraulics | PMA |
| 214851-1WA | Bearing, Pressurized Driven, Hydraulic | Optimum Engineering & Manufacturing Inc | — | 29 | Hydraulic | PMA |
| 216182WA | Sleeve, Splined | Optimum Engineering & Manufacturing Inc | — | — | Consumables / Hardware | PMA |
| 216222-1WA | Bearings, Fixed, Matched Set | Optimum Engineering & Manufacturing Inc | — | 21 | Environmental / Cabin | PMA |
| 216225-1WA | Bearing, Pressurized, Drive | Optimum Engineering & Manufacturing Inc | — | 21 | Environmental / Cabin | PMA |
| 216226-1WA | Bearing, Pressurized | Optimum Engineering & Manufacturing Inc | — | 21 | Environmental / Cabin | PMA |
| 252-146-1WA | Bar, Torque | Optimum Engineering & Manufacturing Inc | | — | Consumables / Hardware | PMA |
| 25219-1WA | Gear | Optimum Engineering & Manufacturing Inc | | 11 | Interior / Furnishings | PMA |
| 25236-1WA | Rack | Optimum Engineering & Manufacturing Inc | | 11 | Interior / Furnishings | PMA |
| 2604747WA | Key, Wheel | Optimum Engineering & Manufacturing Inc | | 20 | Consumables / Hardware | PMA |
| 2610039WA | Key-Rotor, Drive | Optimum Engineering & Manufacturing Inc | | — | Consumables / Hardware | PMA |
| 3172227-4WA | Poppet-Valve | Optimum Engineering & Manufacturing Inc | | — | Unknown | PMA |
| 3177851-1WA | Guide-Poppet | Optimum Engineering & Manufacturing Inc | | — | Unknown | PMA |
| 3177852-1WA | Housing-Valve Guide | Optimum Engineering & Manufacturing Inc | | — | Unknown | PMA |
| 3181767-1WA | Housing-Poppet Guide | Optimum Engineering & Manufacturing Inc | | — | Unknown | PMA |
| 3181768-1WA | Guide Set-Poppet Valve | Optimum Engineering & Manufacturing Inc | | — | Unknown | PMA |
| 3229582-2WA | Disk Assembly - Brake | Optimum Engineering & Manufacturing Inc | | 20 | Consumables / Hardware | PMA |
| 3233470-1WA | Gear-Spur | Optimum Engineering & Manufacturing Inc | | — | Unknown | PMA |
| 3233470-2WA | Gear-Spur | Optimum Engineering & Manufacturing Inc | | — | Unknown | PMA |
| 3233480-1WA | Gear-Worm | Optimum Engineering & Manufacturing Inc | | — | Unknown | PMA |
| 3233481-1WA | Rack-Shaft | Optimum Engineering & Manufacturing Inc | | — | Unknown | PMA |
| 3233484-1WA | Shaft-Splined | Optimum Engineering & Manufacturing Inc | | — | Unknown | PMA |
| 3233497-1WA | Gear-Spur Motor | Optimum Engineering & Manufacturing Inc | | — | Unknown | PMA |
| 3233504-1WA | Stem -Adjusting | Optimum Engineering & Manufacturing Inc | — | — | Consumables / Hardware | PMA |
| 3233507-2WA | Seat - Valve | Optimum Engineering & Manufacturing Inc | | 25 | Interior / Furnishings | PMA |
| 3236051-1WA | Boot - Flexible | Optimum Engineering & Manufacturing Inc | — | 25 | Interior / Furnishings | PMA |
| 3236906-4WA | Rotor Set-Matched | Optimum Engineering & Manufacturing Inc | | — | Unknown | PMA |
| 335-105-201-0WA | Axial Stop | Optimum Engineering & Manufacturing Inc | — | — | Consumables / Hardware | PMA |
| 3826099-1WA | Vane - Inlet | Optimum Engineering & Manufacturing Inc | | 72 | Engine / Fuel | PMA |
| 3826099-3WA | Vane - Inlet | Optimum Engineering & Manufacturing Inc | | 72 | Engine / Fuel | PMA |
| 3826099-4WA | Vane - Inlet | Optimum Engineering & Manufacturing Inc | | 72 | Engine Accessories | PMA |
| 3826099-5WA | Vane - Inlet | Optimum Engineering & Manufacturing Inc | | 72 | Engine Accessories | PMA |
| 5009235-2WA | Key, Disc Drive | Optimum Engineering & Manufacturing Inc | — | — | Consumables / Hardware | PMA |
| 5009468WA | Bearing Assembly - Drive -Pressure Loaded | Optimum Engineering & Manufacturing Inc | — | 20 | Consumables / Hardware | PMA |
| 5009469WA | Bearing Assembly - Driven -Pressure Loaded | Optimum Engineering & Manufacturing Inc | — | 20 | Consumables / Hardware | PMA |
| 5009470WA | Bearing - Matched Set | Optimum Engineering & Manufacturing Inc | — | — | Consumables / Hardware | PMA |
| 518477WA | Front Pressure Plate | Optimum Engineering & Manufacturing Inc | — | — | Consumables / Hardware | PMA |
| 518498WA | Assy, Rear Pressure Plate | Optimum Engineering & Manufacturing Inc | — | — | Consumables / Hardware | PMA |