Feature:1. Main Purpose: The main function of radiator hose filler neck is to facilitate the addition of coolant to maintain the normal working temperature of the engine.2. Fast Coolant adding: The inline design allows you to easily add coolant, timely supplement and adjust the cooling system of the car, and protect the normal operation of the engine.3. Easy to Read Temp: Coolant pipe filler neck come with a cap, which has a temperature display, which can be very intuitive to understand the temperature.4. Strong Durability: Made of T6061 aluminum material, surface polishing, high temperature resistance, rust resistance, high reliability, to ensure its long term stable use.5. Versatile Application: The filler neck can be welded onto a 32mm pipe, making it suitable for various projects involving the modification or installation of radiator systems in most car models.Specification:Item Type: Radiator Inline Filler NeckMaterial: T-6061 Aluminum (Polished Surface)Hose ID: Approx. 32mm/1.26inHose Fitting: Approx. 110mm/4.33in long (neck welded to 32mm tube)Cap Pressure: 1.1barThe Function of Radiator Hose Filler Neck: To facilitate the addition of coolant to maintain the normal working temperature of the engine. During the long term use and driving of the radiator, the high temperature of the engine will be caused by the lack of the car coolant. Serious conditions may cause damage to the radiator and overheating of the engine, further causing various failures and affecting driving safety. Therefore, the existence of the filling port of the car radiator can easily add coolant, replenish and adjust the cooling system of the car in time, and protect the normal operation of the engine..Package List:1 xRadiator Inline Filler Neck (with Cap)Note:1. It is strongly recommended to install and upgrade by a professional mechanic.2. If you have any questions during the installation process, please consult our customer service in time, and we will handle all problems for you.