Carter W-1 Rebuild Kit   

Suits Carter carb with short FLAT SHAFT pump plunger

As used in:

• Chevrolet
  1932-48 All Models including those with Repl Carb
  1941-48 Fleet Economy, Master, Master Deluxe
• Chevrolet Truck
  1932-48 All Models w/Repl Carb
  1941 AG1508-AK3103, AK3104, AK3105, AK3106, AK3107, AK3116, AL3604, 3605-YR4103,4104,4105, 4107, 4112-YS4409 US ARMY
  1941-42 YP, YQ, GA112, 7105, 7106, 7107, 7113, 7116, 7117, 7127 US ARMY
  1941-48 All Models Gov/Military
• Kaiser Frazer
  1947 K-100 Custom, F-47 Manhatan 6 cyl

Suits these carburettor numbers:
483S 839500, 492S, 492SA, 839534, 515S, 569S, 569SA, 609428, 570S, 570SA, 574S, 574SA,
839987, 585S, 585SA, 589S, 589SA, 616S, 616SA, 3835156

This W-1 rebuild kit includes a complete flat stem accelerator pump plunger as follows:

Accelerator Pump Plunger: Length 2 1/2" [2.5”] [63.5mm], Cup: 3/4" [19.05mm] Dia., Flat Stem, no nut on the cup end

Check your requirements carefully.
Another kit that suits W-1 carbs sometimes used on these Chevs is CK4064
CK4064 kit has a LONG [2.645”] longer pump plunger shaft