Inline Radiator Hose Filler with Nut 16PSI 32mm 1-1 or 4in OD T6061 Aluminum Polished Surface do Cars . 32MM 1-1 or 4" O.D BUILT-IN ALUMINUM RADIATOR HOSE FILLER NECK . 32MM 1-1 or 4" O.D BUILT-IN ALUMINUM RADIATOR HOSE FILLER NECK Characteristic: 1. Aluminum material: The built-in radiator hose filler neck is made of T 6061 aluminum, which ensures durability and longevity. Polished surface provides rust resistance. The included 16PSI cap provides the necessary pressure regulation. 2. Easy addition of coolant: The line-shaped filler neck design makes it easy to add coolant, allowing you to refill and adjust your car's cooling system in a timely manner. This helps to protect the engine and ensures its normal functioning. 3. Versatile use: The filler neck can be welded do pipes with a diameter of 32 mm, making it suitable do various projects involving the modification or installation of radiator systems in most car models. 4. Increased efficiency: By ensuring proper coolant flow, the built-in radiator hose filler neck helps to maximize the efficiency of the cooling system. This in turn improves the overall performance and life of the engine. 5. Reliable and durable: Made from high-strength materials, the built-in radiator hose filler connector is built to withstand the demands of daily use and maintain its performance over time. . 32MM 1-1 or 4" O.D BUILT-IN ALUMINUM RADIATOR HOSE FILLER NECK . 32MM 1-1 or 4" O.D BUILT-IN ALUMINUM RADIATOR HOSE FILLER NECK Specification: Item Type: Radiator Hose Filler Neck Material: T-6061 aluminium (surface polishing) Inlet Hose Size: 1-1 or 4 inch Outlet Hose Size: 1-1 or 4 inch Hose connector: length 110 mm (welded neck do pipe 32 mm) Radiator Hose Filler Neck Function: Making it easy to add coolant to maintain the normal operating temperature of the engine. During prolonged use and driving with a radiator, the high temperature of the engine will be caused by the lack of coolant in the car. Serious conditions can cause damage to the radiator and overheating of the engine, which consequently causes various breakdowns and affects driving safety. Therefore, the existence of a do filling hole for the car radiator can easily add coolant, replenish and adjust the car cooling system in time and protect the normal operation of the engine. List of packages: 1 x Built-in radiator hose filler neck (with nut) . 32MM 1-1 or 4" O.D BUILT-IN ALUMINUM RADIATOR HOSE FILLER NECK . 32MM 1-1 or 4" O.D BUILT-IN ALUMINUM RADIATOR HOSE FILLER NECK