NHTSA Complaint #11719564 — 2020 BMW X3

70-80k mileage the oil filter housing gushed coolant fluid. Replacement at dealership quoted at $4,000. Dealership indicated they replace part with current part and do not upgrade to an all aluminum to prevent future problems. Employee also stated they are seeing more of these issues of late. The housing has plastic components that fail easily. There was a 2020 bulletin warning of similar failures for this type of engine and vehicle but BMW has not issued a recall. If this draining of coolant is not detected early enough, the engine could overheat and fail, creating a traffic hazard and safety concern to passengers. Local certified mechanics quoted $2,500 for replacement using an aluminum part. These two quotes were from different mechanics and were based on phone conversation, so additional charges may have applied once they began work.they both opined if part is not replaced with aluminum, the part will fail again prematurely. There is a recently filed class action lawsuit in New Jersey.