Hilmor 1839135 4V134404407H 4V MANIFOLD 134A-404A-407C HOSESThe hilmor 4-valve Aluminum Manifold is built to last with a forged aluminum body. It’s designed to be leak-resistant with replaceable stainless steel valve seats, SAE-style o-rings and a securely seated large sight glass. A true 3/8” bore throughout the valve gives you faster vacuum pulls. Front-mounted hose positions and a permanent location for temperature clamps result in added convenience. lus, comfort grip handles are optimally sized for easier turns. Sold with our retooled gauges and optional “60” refrigeration hoses with low-loss ball valve adapters.