Vacuum Secondary Diaphragm; Carburetor Model Numbers R2929/R3116/R3259-1/R3300/R3410/R3977/R4118/R4201/R6127/R80512;
Vacuum secondaries are activated by venturii velocity through the primary venturii and further aided by secondary venturii velocity. Engine/manifold vacuum is not related and has no effect on the operation of the carburetors secondary system.
- Vacuum Secondary Diaphragm
Application Summary:
| Year |
Make/Model |
| Vacuum |
Secondary Diaphragm Carb No R2929 |
Additional Information: