From 1954 GMC Master Parts Book:
7450131 is listed as the inner front wheel bearing for 350-24. Notes in the book also refer to "HY #KA-11424".
I Googled "KA 11424 Bearing" and got hits.
3691478 is the seal part number.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
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