1350 FORD CV 3 1/2 TUBE

It connects the driveshaft to the differential or transfer case, allowing smooth power delivery even when the driveshaft is at a steep angle. You typically replace this part when you hear clunking or feel vibration from the driveline, especially on lifted trucks or vehicles with worn CV joints. It is designed to be welded onto a 3.5-inch diameter driveshaft tube with a 0.083-inch wall thickness.