That holds the tube/pipe/leg that is 1/3 of the support for the machine gun ring if the truck is so equipped. This part is on ALL trucks. Do not remove as it forms a spacer on that side of the truck/cowl.
Dr Deuce Over 50,000 driven miles in a CCKW
1942 CCKW closed cab shopvan
1943 CCKW closed cab cargo w/M32 MG mount
1944 CCKW open cab LeRoi Kompressor
1944 CCKW open cab F1 Aircraft fueler tanker
1945 CCKW open cab cargo w/artic cab
1942 Chev cargo
1942 Chev K51 Panel
1944 Chev M6 Bomb Truck
1942 GPW Jeep http://home.comcast.net/~cckw/wsb/html/ ... 59870.html