Jeep Wrangler Jk Radiator Cap

REPLACEMENT RADIATOR CAP: The radiator cap retains coolant within the radiator while functioning as a two-way valve that maintains proper pressure, ensuring the radiator operates effectively. If pressure is not consistently regulated, the coolant may boil and evaporate, endangering the engine with potential overheating. Signs of a Faulty Radiator Cap include: air infiltration in the system, decreased coolant levels, coolant leaks, reservoir overflow, and engine overheating.