OER Parts offers a wide selection of Brake Components for your 1942 Oldsmobile Series 78. OER Parts offers 1942 Oldsmobile Series 78 Master Cylinders Components 1942 Oldsmobile Series 78 Master Cylinders, 1942 Oldsmobile Series 78 Bails, 1942 Oldsmobile Series 78 Covers, 1942 Oldsmobile Series 78 Push Rods, and 1942 Oldsmobile Series 78 Rebuild Kits and Parts.