WABCO part numbers starting P51
| P5111 | Gasket | WABCO | ||
| P5111-1 | Gasket | WABCO | ||
| P5112 | Flat valve diaphragm | WABCO | ||
| P51121 | Air valve | WABCO | ||
| P51121-1 | Air valve | WABCO | ||
| P51126-0007 | Double air cylinder | WABCO | ||
| P5125 | Valve disk | WABCO | ||
| P51272 | Controlair valve | WABCO | ||
| P51275 | Controlair valve | WABCO | ||
| P5149 | Flat valve diaphragm | WABCO | ||
| P5150 | Fluid valve stem | WABCO | ||
| P5150-3 | Fluid valve stem | WABCO | ||
| P51680 | Valve disk | WABCO | ||
| P51864-1 | Pn control assembly | WABCO |