BMW / Bosch Relay, 1378238. This relay is in good used condition and is a genuine OEM BMW part, not the cheap aftermarket stuff. This relay has been thoroughly tested here at our facility and is in good working order. These relays typically outlast a vehicle, however, when one fails our buyers can count on us to deliver a good relay for a fraction of dealer replacement cost. We offer free shipping on this item and a 6 month warranty.