This is a heater knob that is maroon in color and imprinted with the word "Warmer" and has the directional arrow. For 1947 1948 1949 1950 1951 1952 1953 Chevrolet Trucks

This is a heater knob that is black in color and imprinted with the word "Warmer" and has the directional arrow. For 1954 Chevrolet Trucks

Here's a maroon cowl or top vent knob for your 47-53. For 1947 1948 1949 1950 1951 1952 1953 Chevrolet Trucks

Here's a brown cowl vent knob like original for your 40-46. For 1940 1941 1942 1944 1945 1946 Chevrolet Trucks

Here's a black cowl vent knob for your 50-53. For 1954 Chevrolet Trucks

This is an Ivory colored accessory cowl vet knob. For 1940 1941 1942 1944 1945 1946 Chevrolet Trucks

This is an Ivory colored, 3 piece knob set for the heater / defroster / air control levers on the dash. For 1951 1952 Chevrolet Cars

This is the Ivory colored replacement heater / defroster knob on the heater door for Special Deluxe. For 1941 Chevrolet Cars

This is the Ivory colored knob that goes on the cowl vent control arm. This was an accessory when new. For 1939 1940 1941 1942 1944 1945 1946 1947 1948 Chevrolet Cars