F99660 Double H Valve Fast Transmission Spare Parts for Shac Heavy Duty Trucks

F99660 dual-H air valve is mounted on the gearbox housing and controls the synchronizer of the auxiliary gearbox via pneumatic logic. It is a core component of the pneumatic control system for heavy-duty gearboxes such as those from Fast Gear.

• Dual-acting design: Utilizes a dual-H configuration, supporting rapid and precise switching of the air path between two different operating states.
• High durability: The valve body is typically made of high-strength steel or cast iron, capable of withstanding the high air pressure and mechanical stress generated by frequent gear shifting in heavy-duty trucks.
• Precision control: The internal valve core is precisely designed to ensure stable air pressure when switching between high and low gears, reducing synchronizer wear and improving shift smoothness.

This valve is primarily used in heavy-duty commercial vehicles equipped with FAST and similar transmissions:

Main vehicle models: Sinotruck HOWO, SHAC F2000/F300/X3000, Foton Au, Dongfeng Tianlong, and Beiben heavy trucks.

Compatible transmissions: Widely used in FAST 8-speed, 9-speed, 10-speed, 12-speed (such as the 12JS160T series) and 16-speed transmissions.

Shac Body Spare Parts: Cab assembly, Front panel, Bumper, Sun shade, Rearview mirror, Tail light, Combination instrument, Door handle, Electric lifter

Engine Accessories: WEICHAI engine, engine parts including repair kit, filters, used engine and new engine.

Other spare parts for Shac: If you require additional parts, please send your inquiry to us. We will provide a quick response to your inquiry.