TOYOTA HILUX VIGO KUN25 KUN26 SR TURBO LN166 KDN165 2KD 1KD D-4D 10T GEAR DRIVEN HYDRAULIC POWER STEERING PUMP P/STG PUMP (44310-0K040 / 443100K040 / 44310-0K020 / 10 TEETH)

Overview

The Toyota Hilux KUN25 / LN166 SR-T Hydraulic Power Steering Pump (P/STG Pump Assembly 44310-0K040 / 44310-0K020) is a commercial-grade hydraulic steering component engineered specifically for Toyota Hilux Vigo, Hilux SR Turbo (SR-T), and commercial utility 4x4 / 4x2 transport vehicles powered by Toyota 2KD-FTV (2.5L) and 1KD-FTV (3.0L) D-4D turbo diesel engines (Hilux Vigo KUN25, KUN26, Hilux SR Turbo LN166 / KDN165 / KDN166 / KDN190 series, and Fortuner KUN50 equipped with gear-driven hydraulic power steering systems). Built with a precision 10-Tooth (10T) drive gear, this hydraulic vane pump mounts directly to the engine timing gear casing to deliver steady, calibrated hydraulic pressure to the steering rack and pinion. Replacing a worn, whining, or leaking power steering pump eliminates heavy or stiff steering, cures steering wheel shuddering and vibration at low engine idling RPM, prevents hydraulic oil aeration/cavitation, and restores smooth, effortless steering control under heavy commercial payloads and tough job-site conditions.

Engineered to commercial fleet specifications verified against Malaysian commercial 4x4 and light truck supplier standards for dependable workshop replacement, steering overhaul, and preventive fleet maintenance.

Key Dimensions (As Labeled in Product Photos)

• Mounting Configuration: Heavy-duty 2-bolt flange mounting (direct engine gear casing mount)

• Drive Mechanism: Precision-machined 10-Tooth (10T) helical drive gear

• Drive Type: Direct engine gear driven (10T)

• Operating Specifications: Nominal operating pressure ~80–90 bar, factory-calibrated flow rate

• Hydraulic Ports: Threaded high-pressure discharge port & suction oil inlet pipe union with O-ring seal

• Measurement Notice: Key specifications including mounting flange bolt center-to-center pitch, pilot spigot diameter, 10T drive gear outer diameter, tooth pitch, and hydraulic port dimensions are labeled directly in the product photos.

• Please verify your existing pump gear teeth count (10T), mounting flange, and pipe connections against the measurements shown in our photos before ordering.

Compatible Truck & 4x4 Vehicle Applications

• TOYOTA:

  • Hilux Vigo (KUN25 / KUN26 / KUN15 Series, 2005–2015)

  • Hilux SR Turbo / SR-T (LN166 / KDN165 / KDN166 / KDN190 Series D-4D)

  • Fortuner (KUN50 / KUN51 Series, 2.5L / 3.0L D-4D)

• Engine Application:

  • Toyota 2KD-FTV (2.5L 4-Cylinder D-4D Common Rail Turbo Diesel)

  • Toyota 1KD-FTV (3.0L 4-Cylinder D-4D Common Rail Turbo Diesel)

• OEM & Cross-Reference Part Numbers:

  • 44310-0K040 / 443100K040 (Toyota Genuine OEM)

  • 44310-0K020 / 443100K020

  • 44310-0K030 / 443100K030

• (Note: In the Malaysian market, Hilux KUN25 and LN166 SR Turbo models running 2KD engines utilize this 10-tooth gear-driven pump. Please verify your original pump gear tooth count [10T] and pipe orientation prior to ordering.)

Why Choose Our Commercial Fleet Parts?

• Calibrated High-Pressure Hydraulic Flow: Precision-machined internal rotor and vanes provide continuous, smooth hydraulic assistance even at low engine idling speeds, minimizing driver fatigue during tight maneuvers.

• Induction-Hardened 10T Drive Gear: High-grade heat-treated 10-tooth gear profile resists gear tooth 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 vehicle's engine setup?

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

• Or send your Chassis Number (VIN) / Engine Model / Gear Teeth Count (10T) / sample photos to our team via WhatsApp for instant confirmation!