HB400-60001 original hydraulic retarder proportional valve precisely controls oil pressure via electromagnetism, ensuring safe and stable auxiliary braking for heavy-duty trucks.

• This proportional valve is widely used in heavy-duty trucks, tractors, and dump trucks equipped with Hydraulic Retarders (such as FHR400A and FH400A series):

  • SHACMAN: Delong X3000, X5000, X6000, M3000 series.

  • SINOTRUK: HOWO T7H, TH7, MAX, and SITRAK C7H, G7 series.

  • FOTON AUMAN: GTL, EST, and Galaxy models (with FAST gearbox/retarder systems).

  • FAW JIEFANG: J6P, J7 series (equipped with FAST retarders).

  • DONGFENG: Tianlong KX, KL series.

  • DAYUN / HONGYAN: Various heavy-duty mining dump trucks and engineering vehicles.

• Precise Pressure Regulation: Utilizes high-precision electromagnetic proportional control. It responds to ECU signals within microseconds to smoothly regulate oil pressure, ensuring seamless braking intervention.

• Excellent Thermal & Chemical Resistance: Internal valve cores and seals are made of high-performance Fluororubber (Viton), which withstands transmission oil temperatures above 100°C and resists chemical corrosion.

• OE-Standard Durability: Manufactured strictly according to original factory specifications. It features exceptional anti-vibration and high-pressure resistance, preventing coil burnout or valve core jamming under long, continuous downhill braking.

• Plug-and-Play Installation: Fully matches the original vehicle dimensions and waterproof electrical connector. No modifications are needed, allowing for direct replacement and fast restoration of braking power.

• Retarder Control Wiring Harness: High temperatures can cause the original plug to melt or the wires to crack. The wiring harness is the most frequent cross-sold item.

• Temperature & Pressure Sensors: These work alongside the proportional valve to monitor retarder oil status and provide feedback to the ECU.

• Gasket & O-Ring Repair Kit: The seals and paper gaskets at the retarder housing joints should always be replaced during valve installation to prevent oil leaks.

• Retarder Oil/Water Filter Element: Essential maintenance parts that foreign fleet owners regularly replace during standard vehicle servicing.

Shaanxi JFDL Trading Co., Ltd specializes in truck spare parts with extensive industry expertise. Our components are compatible with major truck brands including SINOTRUCK HOWO, SHACMAN, FOTON, FAW, DONGFENG, XCMG, SANY, LIU GONG, BENZ, MAN, and Yutong bus. We offer comprehensive OEM and ODM services.

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