Identification – when no tag is present. You can sometimes identify a WA-1 carburetor using the casting number, which is found on the throttle body. This is not definitive, but can help when trying to match a carburetor kit.
| Casting Number | Carburetor Number | Application |
| 154 | 433s | Pontiac |
| 194 | 425s, 466s, 467s | Oldsmobile |
| 223 | 413s, 416s | Universal |
| 243 | 426s | Oldsmobile |
| 245 | 432s, 463s | Pontiac |
| 253 | 435s | Nash |
| 288 | 462s | Pontiac 8 |
| 290 | 464s, 683s | Nash |
| 298 | 454s | Hudson |
| 298 | 611s, 662s, 694s | Nash |
| 309 | 622s | Frazer |
| 317 | 530s | Packard |
| 332 | 477s | Packard |
| 340 | 481s, 504s, 508s, 764s, 765s | Oldsmobile |
| 348 | 494s | Pontiac 6 |
| 356 | 496s | Studebaker |
| 368 | 493s | Pontiac |
| 388 | 537s, 717s | Pontiac |
| 485 | 613s, 645s | Willys |
| 538 | 651s, 709s, 710s, 763s | Oldsmobile |
| 592 | 652s, 718s | Pontiac |
| 679 | 746s | Nash |
| 682 | 749s, 755s | Hudson |
| 779 | 780s | Nash |
| 825 | 843s | Volvo |
| 910 | 968s, 2113s | Hudson |
| 972 | 990s, 2009s, 2043s, 2114s | Hudson |
| 1002 | 2013s | Hudson |