MISHIMOTO 1.3 bar Ø32 mm "one-way" radiator caps - Subaru

MISHIMOTO 1.3 bar "one-way" radiator caps Subaru

 

Difference between one-way and two-way caps

The Mishimoto radiator caps is available in two versions: one-way and two-way.

One-way: The caps primarily manages pressure in the system and drainage to the expansion tank in a single direction.

Two-way: It also manages the return of air/fluid from the vase to the radiator during cooling, for more complete and stable operation.

In general, the bidirectional type is more versatile and recommended for most modern vehicles. For the best choice, it is important to select the model designed for your original radiator and system.