The Muncie 48TK3991 is the Shift Option Code "A" manual air valve assembly for the SH8 12VDC power take-off. According to Muncie's own service-parts document SP97-01, this part carries shift option code "A" and includes the manual air valve type components. It fits within the SH Series PTO family, which is an air-shift-only unit built for high-torque applications and features an integral air shift design with no exposed air cylinder. The SH Series mounts to a 6 or 8-bolt cast iron housing and is compatible with most popular transmissions. Call us to confirm proper fit for your specific application.
Features
Shift Option Code "A" manual air valve type, per Muncie service document SP97-01
Designed for the Muncie SH8 12VDC power take-off
SH Series integral air shift design with no exposed air cylinder
SH Series built for high-torque applications
Compatible with 6 or 8-bolt cast iron housing mount
Genuine Muncie Power Products part
