The Caterpillar 1590745 COUPLER AS is a genuine OEM female quick disconnect coupler assembly, essential for hydraulic connections in various Caterpillar machinery. Constructed from durable steel with a zinc-plated finish, it ensures corrosion resistance and longevity. This poppet-style coupler features a 3/4-16 thread size, an overall length of 73.66 mm, and a width/height of 38.1 mm. It is engineered to perform reliably under a system operating pressure of 206.84 bar (3000 psi) and within a wide temperature range from -30°C to 100°C, making it suitable for demanding agricultural, construction, and industrial applications.