EnginesGMC 270GMC 270GMC 270LayoutInlineCoolingLiquidFuelPetrolDisplacement4.416 LVehicles 6193119321933193419351936193719381939194019411942194319441945GMC CCKW-353≈ Aug 1942 – Aug 1945Nov 1942 – May 1943Jul 1943 – May 1945Jun 1944 – May 1945≈ Aug 1944 – May 1945DUKW21,147≈ Mar 1943 – Aug 1945Jul 1943 – Apr 1945≈ Jul 1943 – Apr 1945Jun 1944 – Mar 1945Jun 1944 – Mar 1945≈ Jun 1944 – May 1945≈ Oct 1944 – Mar 1945≈ May 1945 – Aug 1945GMC AFKWX-353 (15 ft body)2,232GMC AFKWX-353 (17 ft body)5,003GMC CCKW-352GMC CCW-35323,649