Left Coast Truck Parts has multiple options for your transmission needs. We have both running a rebuildable cores. Brands we have in stock are Spicer, Fuller/Eaton, Rockwell and Allison. Along with our engines our running transmissions have a 30 day guarantee. We have 5, 6, 7, 8, 9, 10, 13, 15, and 18 speeds, along with automatic superior and auxiliary 3-4 speed brownies.