HINO SUPER DOLPHIN FS270 ZM EF750 EF550 V8 18.0ML RH HEAVY DUTY HYDRAULIC POWER STEERING PUMP P/STG PUMP (44300-1641 / 44310-1641 / 443001641 / 443101641)

Overview

The Hino EF750 Hydraulic Power Steering Pump (P/STG Pump Assembly 44300-1641 / 44310-1641) is a heavy-duty hydraulic steering component engineered for Hino Super Dolphin, FS270, ZM, and heavy commercial transport trucks powered by Hino EF750 and EF550 V8 diesel engines (FS270, FS, ZM series heavy cargo lorries, dump trucks, tippers, concrete mixers, and prime movers equipped with gear-driven hydraulic power steering systems). Built in the Right-Hand (RH) rotation configuration, this hydraulic vane pump delivers a steady, calibrated hydraulic flow rate of 16.0 L/min at up to 100 bar operating pressure directly to the power steering gearbox. Replacing a worn, whining, or leaking power steering pump eliminates heavy or stiff steering, cures steering wheel shuddering at low engine idling RPM, prevents hydraulic oil aeration/cavitation, and restores smooth, effortless steering control under heavy commercial payloads.

Engineered to heavy commercial fleet specifications verified against Malaysian commercial truck supplier standards for dependable workshop replacement, steering overhaul, and preventive chassis maintenance.

Key Dimensions (As Labeled in Product Photos)

• Mounting Configuration: Standard heavy-duty flange mounting (direct engine timing gear casing mount)

• Drive Mechanism: Precision-machined helical drive gear (Right-Hand / RH rotation)

• Rotation Direction: Right-Hand (RH) rotation

• Operating Specifications: Nominal displacement 18.0 ml/r, Maximum operating pressure 100 bar, Speed range 500–3600 r/min, Controlled flow rate 16.0 L/min

• Hydraulic Ports: Standard threaded high-pressure outlet port (for banjo bolt or flare fitting) & suction feed inlet port

• Measurement Notice: Key specifications including mounting flange bolt center-to-center pitch, pilot spigot diameter, drive gear outer diameter, tooth count, and hydraulic port dimensions are labeled directly in the product photos.

• Please verify your existing pump rotation (RH), gear teeth count, and mounting flange profile against the measurements shown in our photos before ordering.

Compatible Truck Models & Engine Applications

• HINO TRUCKS: Super Dolphin, FS270, ZM Series Heavy Commercial Trucks (Heavy Cargo Lorries, Wooden Body Trucks, Tippers, Dump Trucks & Prime Movers)

• Engine Application:

  • Hino EF750 (16.7L V8 Naturally Aspirated Diesel)

  • Hino EF550 (16.2L V8 Diesel)

• OEM & Cross-Reference Part Numbers:

  • 44300-1641 / 443001641 (Hino Genuine OEM)

  • 44310-1641 / 443101641 (Hino Cross-Reference)

• (Note: In the Malaysian commercial truck market, Hino V8 pumps vary between EF750/EF550 and later F-series engines in gear profile and pressure rating. Please verify your original part number and sample dimensions prior to ordering.)

Why Choose Our Commercial Truck Parts?

• Calibrated High-Pressure Hydraulic Flow (18.0 ml/r, 100 bar): Precision-machined internal rotor and vanes provide continuous, smooth 16.0 L/min hydraulic assistance even at low engine idling speeds, minimizing driver fatigue during tight maneuvers.

• Induction-Hardened RH Drive Gear: High-grade heat-treated gear teeth resist pitting, backlash, and premature wear against the engine timing gear train.

• Integrated Flow Control & Relief Valve: Factory-calibrated internal pressure relief valve ensures stable line pressure while preventing high-pressure line bursts during full steering lock.

• High-Grade Oil Seals: Heat- and oil-resistant internal seals prevent hydraulic steering fluid from leaking into the engine oil crankcase.

• Ready Stock & Fast Shipping: Readily stocked for quick dispatch across Peninsular and East Malaysia.

Need Help Confirming Fitment?

Unsure whether this power steering pump matches your lorry's existing engine setup?

• Check your old pump against the measurements shown in our pictures.

• Or send your Chassis Number (VIN) / Engine Model / Gear Teeth Count / sample photos to our team via WhatsApp for instant confirmation!