This U-joint gasket set fits 1929-1954 Chevrolet & GMC cars & trucks. For 1933-36 Standard models order G-6043 transmission gasket set, which includes the U-joint gaskets. For 1950-1954 Powerglide models order FS-125P. Bolt Centers on collar gaskets are 3-3/4". Made in the USA! Replaces GM# 3723490, 3699727, 348259 Specific Applications: 1929-1940 All Pass & Truck (exc. 1933-1936 Standard, COE); 1941-1953 Passenger, 1/2 & 3/4 Ton (exc 1941-1942 3/4 Ton, Powerglide); 1954 Pass & 1/2 Ton Truck (exc. Auto Trans) A leaky U-joint housing is a very common problem with the enclosed drive line vehicles. This seal set replaces all the seals and shims required to keep gear oil inside, where it is needed. (Note: early models 1929-1933 without a screw-on flange at the rear of ball housing, will require a FS-4356 O-ring seal in addition to this kit).