Inboard Bearing, 250 Series Centrifugal Pump by Oil Baron Supply Quantity Add to cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. Inboard Bearing suits 250 Series Centrifugal Pump. OBS Part Number: OBS001118MCM Part Number: P25IBBRGMission Part Number: 20615-1