There are 2 different driven gears with housing for your '46 (if it's a 1/2 ton) and a 3rd one for 3/4 and 1 Ton trucks with the 3 speed transmission.
It would help if you could indicate which model truck and the wheel/tire size involved as those details play into which unit you need.
GM# 605061 is a 4 drive tooth - 12 driven tooth set
GM# 605062 is a 5 drive tooth - 14 driven tooth set
GM# 605063 is a 6 drive tooth - 19 driven tooth set
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)