The Muncie 56T36398 is a genuine Muncie Power Products Low Neck Breather Flange used on Muncie PTO-mounted reservoir tanks. Muncie’s own service parts documentation identifies this flange across multiple tank configurations, including metal round tanks and metal upright tanks. The breather flange is a precision-fit service replacement designed to maintain proper venting in the hydraulic reservoir. Call Pro Gear and Transmission to confirm this part fits your specific Muncie tank assembly before ordering.FeaturesGenuine Muncie Power Products service replacement partLow Neck Breather Flange design for Muncie PTO reservoir tanksCompatible with Muncie metal round tank configurationsCompatible with Muncie metal upright tank configurationsDirectly referenced in Muncie service parts documents SP13-01, SP13-02, and SP13-03