Double H Valve BSF99660 Truck Transmission Spare Part

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Product Detail

Double H Valve BSF99660 Truck Transmission Spare Part

The BSF99660 / F99660 Double H Valve is a direct-fit replacement integrated dual-H valve designed for FAST gearbox 9JS series and heavy-duty trucks including Shacman, HOWO, Dongfeng, FAW, and Foton. This pneumatic control valve regulates the high/low range shifting of the auxiliary gearbox, ensuring precise and reliable gear engagement under heavy loads.

Item	Details
Part Number	BSF99660 / F99660
Product Name	Double H Valve / Integrated Dual-H Valve
Alternative Part Numbers	12JS160T-1703022-3 / D128921 / CK99660 / F99660MX / LEO200030A / 17050010010

Vehicle Fitment	Shacman, HOWO, Dongfeng, FAW, Foton, MAZ, KAMAZ
Transmission Model	FAST 9JS135, 9JS150T, 9JS119, 8JS100, 8JS118, RT11509C, 16JS200T

Compatibility

This double H valve is suitable for:

Shacman (F2000 / F3000 / Delong)
HOWO (Sinotruk)
Dongfeng
FAW
Foton
MAZ / KAMAZ

The Double H Valve controls the high/low range shifting of the auxiliary gearbox. It works with the pre-selection valve on the gear shift lever to enable precise 'air-controlled-air' operation, ensuring the auxiliary gearbox's synchronizer responds instantly to pneumatic signals .

The integrated design combines filtration, pressure regulation, and directional switching into a single unit, eliminating intermediate connecting lines and significantly reducing air leak failure points compared to older split-system designs .

Continuous air leakage from the valve body (worn pressure-regulating spool, aged seals, or moisture)
Sluggish or jammed high/low range shifting
Pressure regulation failure causing synchronizer damage

Regularly drain accumulated water from the air dryer tank and replace the dryer cartridge
Clean or replace the internal filter element if clogged with oil or contaminants
Replace the entire valve assembly if internal damage is found

Double H Valve Part Numbers & Product Names

Part Number	Product Name (English)	Application / Notes
F99660	Double H Valve	FAST Gearbox universal part, fits Shacman, Sinotruk, Dongfeng, FAW
WG2203250003	Double H Valve	Sinotruk HOWO Gearbox Air Valve
WG2203250015	Double H Valve	Sinotruk HOWO HW19710 Gearbox
SC2203250003	Double H Valve Assembly	Shacman dedicated
ORT1703BA010	Double H Valve (Peacock Blue)	Ruirong brand, OEM reference F99660
Wg1629440091	Double H Valve	HOWO Gearbox

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Product Detail

Double H Valve BSF99660 Truck Transmission Spare Part

Item	Details
Part Number	BSF99660 / F99660
Product Name	Double H Valve / Integrated Dual-H Valve
Alternative Part Numbers	12JS160T-1703022-3 / D128921 / CK99660 / F99660MX / LEO200030A / 17050010010

Vehicle Fitment	Shacman, HOWO, Dongfeng, FAW, Foton, MAZ, KAMAZ
Transmission Model	FAST 9JS135, 9JS150T, 9JS119, 8JS100, 8JS118, RT11509C, 16JS200T

Compatibility

This double H valve is suitable for:

Shacman (F2000 / F3000 / Delong)
HOWO (Sinotruk)
Dongfeng
FAW
Foton
MAZ / KAMAZ

Continuous air leakage from the valve body (worn pressure-regulating spool, aged seals, or moisture)
Sluggish or jammed high/low range shifting
Pressure regulation failure causing synchronizer damage

Regularly drain accumulated water from the air dryer tank and replace the dryer cartridge
Clean or replace the internal filter element if clogged with oil or contaminants
Replace the entire valve assembly if internal damage is found

Double H Valve Part Numbers & Product Names

Part Number	Product Name (English)	Application / Notes
F99660	Double H Valve	FAST Gearbox universal part, fits Shacman, Sinotruk, Dongfeng, FAW
WG2203250003	Double H Valve	Sinotruk HOWO Gearbox Air Valve
WG2203250015	Double H Valve	Sinotruk HOWO HW19710 Gearbox
SC2203250003	Double H Valve Assembly	Shacman dedicated
ORT1703BA010	Double H Valve (Peacock Blue)	Ruirong brand, OEM reference F99660
Wg1629440091	Double H Valve	HOWO Gearbox