【Suitable size】The model number of the black coolant reservoir cap is 21712-79900, the out diameter is about 1.5 x 1.5 inch/ 3.8 x 3.8 cm, inner diameter is about 1.2 x 1.2 inch/ 3 x 3 cm, and the height is about 0.4 inch/ 1 cm, which is the ideal size for many types of cars.
【High-quality materials】These coolant reservoir caps are made of high-quality plastic materials, with high and low temperature resistance, wear resistance and scratch resistance, not easy to deformation and damage, good fastness, strong and durable characteristics, easy to clean, can provide long-term sealing effect.
【Main function】The engine coolant overflow reservoir tank cap can effectively prevent the liquid in the tank from overflowing during driving, maintain stable pressure, improve driving safety.