Optimize your snowplow's hydraulic performance with the genuine Fisher and Western 48517 Quill Assembly. This vital stem needle valve features a 1/2-20 thread and measures 1-7/8 inches long, complete with two O-rings for a perfect seal. Essential for many electric hydraulic pumps, including Western's Flostat and Fisher's Insta-Act systems, it ensures precise control and extends the life of your snowplow. Invest in this authentic replacement part for reliable operation through the toughest winter conditions.