I don't know the number but I do know the pinion side gasket is paper thin and the cover gasket is regular gasket thickness. Hope this helps if you end up having to choose one at the counter. My NAPA guy couldn't figure it out from the book so he ordered 3 and I picked the 2 I needed.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.