ISUZU ELF NPR NQR NMR NLR NPS 4HL1 4HE1 4HK1 4.8L 5.2L 30T RH ALUMINIUM BODY 110BAR HYDRAULIC POWER STEERING PUMP (OE: 8-98155-752-0 / 8-98155-752-1 / 8-98253-233-2 / 8981557520 / 84230-08054) Overview

The Isuzu Elf 4HL1 4HE1 Hydraulic Power Steering Pump (P/STG Pump Assembly 8-98155-752-0 / 8-98155-752-1 / 8-98253-233-2) is a commercial-grade hydraulic steering component engineered specifically for Isuzu Elf and N-Series commercial transport trucks powered by Isuzu 4HL1 (4.8L), 4HE1 / 4HE1-T (4.8L), and 4HK1 / 4HK1-T (5.2L) common-rail 4-cylinder diesel engines (Isuzu NPR, NQR, NMR, NLR, and NPS series commercial cargo lorries, wooden body trucks, tippers, dump trucks, box vans, and tow trucks equipped with gear-driven hydraulic power steering systems). Built in the Right-Hand (RH) rotation, 30-Tooth (30T) helical drive gear, lightweight high-tensile aluminium body configuration, this precision hydraulic vane pump delivers a steady, calibrated hydraulic flow rate of 8.0–9.0 L/min at up to 110 bar operating pressure (9.6–11.0 ml/r nominal displacement) directly to the power steering gearbox. Replacing a worn, whining, stiff, or leaking power steering pump eliminates heavy steering effort, cures steering wheel shuddering and judder at engine idle RPM, prevents hydraulic oil cavitation/aeration, and restores smooth, effortless steering control under heavy commercial payloads.

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

Key Dimensions (As Labeled in Product Photos)

• Mounting Configuration: Direct flange mounting (direct engine timing gear casing mount)

• Drive Mechanism: Precision-machined 30-Tooth (30T) helical drive gear (Right-Hand / RH rotation)

• Rotation Direction: Right-Hand (RH) rotation

• Housing Material: High-strength die-cast aluminium body with induction-hardened internal steel sleeve & rotor

• Operating Specifications: Nominal displacement 9.6–11.0 ml/r, Maximum operating pressure 110 bar (11.0 MPa), Operating speed range 500–6000 r/min, Controlled flow rate 8.0–9.0 L/min

• Hydraulic Ports: Threaded high-pressure discharge port (for banjo bolt or flare fitting) & suction feed inlet tube connection with O-ring seal

• Measurement Notice: Key specifications including mounting flange bolt center-to-center pitch, pilot spigot diameter, 30T drive gear outer diameter, tooth pitch, and hydraulic port dimensions are labeled directly in the product photos.

• Please verify your existing pump rotation (RH), 30-tooth count, and aluminium body profile against the measurements shown in our photos before ordering.

Compatible Truck Models & Engine Applications

• ISUZU COMMERCIAL TRUCKS:

  • Elf / N-Series (NPR, NQR, NMR, NLR, NPS Series Commercial Cargo Lorries, Wooden Body Trucks, Tippers, Dump Trucks & Box Vans)

• Engine Application:

  • Isuzu 4HL1 / 4HL1-TC (4.8L 4-Cylinder Common Rail Diesel)

  • Isuzu 4HE1 / 4HE1-T (4.8L 4-Cylinder Turbo Diesel)

  • Isuzu 4HK1 / 4HK1-T / 4HK1-TC (5.2L 4-Cylinder Common Rail Turbo Diesel)

• OEM & Cross-Reference Part Numbers:

  • 8-98155-752-0 / 8-98155752-0 / 8981557520 (Isuzu Genuine OEM)

  • 8-98155-752-1 / 8-98155752-1 / 8981557521

  • 8-98253-233-2 / 8-98253233-2 / 8982532332

  • 84230-08054

• (Note: In the Malaysian commercial lorry market, Isuzu Elf NPR running 4HL1 and late 4HE1/4HK1 engines utilizes this 30T RH aluminium body pump. Do not confuse it with the cast iron 4HF1 unit [8-97155-134-0]. Always verify your gear tooth count [30T], pump body material, and rotation [RH] prior to ordering.)

Why Choose Our Commercial Truck Parts?

• Calibrated High-Pressure Hydraulic Flow (110 bar): Precision-machined internal rotor and vanes provide continuous, smooth 8.0–9.0 L/min hydraulic assistance even at low engine idling speeds, minimizing driver steering effort.

• Induction-Hardened 30T RH Drive Gear: High-grade heat-treated 30-tooth gear profile resists gear tooth pitting, backlash, and premature wear against the engine timing gear train.

• Lightweight Die-Cast Aluminium Body: Premium high-density aluminium alloy casing ensures optimal heat dissipation, precise internal tolerances, and reduced component weight.

• Integrated Flow Control & Relief Valve: Factory-calibrated 110-bar 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 (30T) / Rotation (RH) / sample photos to our team via WhatsApp for instant confirmation!