The plastic pipe carrying coolant across the rear of the engine to the water pump. It fails from heat cycling rather than impact, and the failure is usually confined to the rim at the water-pump end where the O-ring seals — enough to lose the whole system while the pipe still looks intact.
2011 MINI Cooper (R56, N16 1.6L)
Coolant pooling on the transmission of a 2011 MINI Cooper traced to a deteriorated rear coolant crossover pipe at the water pump. Pipe and thermostat replaced.
Read the diagnosis →minicooperservicecenter@gmail.com
Florida MV Registration #MV114761