Description
16859-G – ACTUATOR VALVE (WM148A), 3-WAY FOR TRANSMISSION COUNTERSHAFT BRAKE
PART NUMBER(S):
Fleet Products: 16859-G | OE: 16859, WM148A | Automann:
DESCRIPTION:
Model: WM148A – Countershaft Brake Actuator Valve
Vehicles: Eaton Fuller manual transmission-equipped vehicles
• Valve Type: 3-way pneumatic actuator valve
• Application: Transmission countershaft brake control
• Actuation: Air-operated
• Ports: 1/8" NPT
• Primary Function: Regulates air pressure to apply/release the countershaft brake
• Design: Direct OE replacement for Eaton WM148A and WM148-A
• Mounting: Standard mount
• Material: Industrial-grade construction for HD use
• Includes: Control knob
Applications:
Designed for use in heavy-duty commercial vehicles equipped with Eaton Fuller manual transmissions. Controls airflow to the countershaft brake during gear changes to assist with smooth shifting. Compatible with OE actuator systems originally using WM148A or similar configurations.
CROSS-REFERENCE(S):
111549, 1662-532-C, 16859, 16859B, 16859NP, 3088-16859, 35531059, 3623, 36230, EF36230, FUL16859, FUR-16859, GBV-3623, M1316859, S-4397, S4397, WM148, WM148A, L30328
A cross-reference listing means this part may be a compatible replacement for these part numbers based on OEM or distributor data.
IMPORTANT INSTALLATION NOTES:
✔ Use standard thread sealant on all NPT ports
✔ Ensure alignment with transmission porting
✔ Verify compatibility with Eaton Fuller air-actuated countershaft brake system
✔ Installation instructions vary by transmission model; follow vehicle OEM procedures
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