Coolant Pipe O-Ring

The seal between a coolant pipe and its mating port. It only works if the pipe end supporting it is intact — a new O-ring on a deteriorated plastic rim has nothing to seal against.

Documented repairs

2011 MINI Cooper Coolant Leak: Rear Crossover Pipe Repair

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 →

Engines

• N16 1.6L

Models

• R56 MINI Cooper

Repairs by System

• Cooling
• Engine
• Coolant Leak

Symptoms

• Coolant Leak
• Coolant Loss

Procedures

• Coolant Service
• Cooling System Inspection
• Cooling System Vacuum Fill
• Coolant Crossover Pipe Replacement
• Cooling System Vacuum Test
• Thermostat Replacement