Dodge Pillow Block Roller Bearing Unit, Split-Spher, 5-7/16 in Bore Dia, 17.38 to 19.25 in Bolt Center-to-Center Length, 6.69 in Base to Bore Centerline, 21.66 in Overall Length, 9.92 in Overall Width, 13.31 in Overall Height, Four-Bolt Base Mount, Round Bore Type, 6-3/4 in Base Width, Springlok Concentric Collar Locking Device, Trident Triple-Lip Seal, Non-Expansion Expansion Type, 190000 lb Dynamic, 950 rpm Maximum, Cast Iron, Uncoated Cast-in dimples locate drill holes for lube fittings, vents, sensors and mounting modificationsHousing base is threaded to accept four grade five cap bolts for added strength that match base bolts for one-wrench installationStandard housings have two oversized drains adaptable to circulating oil systemsPry slots allow easy separation of the pillow blockCap bolts match base bolts for one-wrench installation