WABCO part numbers starting 543
| 543007 | Hose, air brake actuating, 3/4 in (hoses and fittings, trainline air) | WABCO | ||
| 543092 | Spring (valve, check, rubber seated) | WABCO | ||
| 543201 | Piston assembly | WABCO | ||
| 543326 | Valve, rubber seated, check assembly (valve, check, rubber seated) | WABCO | ||
| 543857 | Seal, spring (valve, strainer and check) | WABCO | ||
| 543858 | Ring, snap (valve, strainer and check) | WABCO | ||
| 543859 | Shim (valve, strainer and check) | WABCO | ||
| 543860 | Nut, cap (valve, strainer and check) | WABCO |