ISUZU GIGA C-SERIES E-SERIES CXZ EXZ CXH CVR CYZ 10PC1 10PB1 10PD1 10PE1 V10 20T RH 27.0ML 130BAR HYDRAULIC POWER STEERING PUMP (OE: 475-03940 / 47503940 / 447-03940 / 475-03923 / 1-19500-345-0 / 19500-345)

Overview

The Isuzu Giga / C-Series 10PC1 Hydraulic Power Steering Pump (P/STG Pump Assembly 475-03940 / 447-03940 / 1-19500-345-0) is a commercial-grade hydraulic steering component engineered specifically for Isuzu Giga, C-Series, and E-Series heavy commercial transport trucks powered by Isuzu 10PC1 (15.0L), 10PB1 (14.0L), 10PD1 (16.7L), and 10PE1 (19.0L) V10 diesel engines (CXZ, EXZ, CXH, CVR, EXR, and CYZ heavy cargo lorries, prime movers, tippers, dump trucks, concrete mixers, and multi-axle heavy haulers equipped with gear-driven hydraulic power steering systems). Built in the Right-Hand (RH) rotation, 20-Tooth (20T) helical drive gear, heavy-duty engine timing gear flange mounting configuration, this high-capacity hydraulic vane pump delivers a steady, calibrated hydraulic flow rate of 20.0 L/min at up to 130 bar operating pressure (27.0 ml/r nominal displacement) directly to the heavy-duty 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 heavy commercial fleet specifications for dependable workshop replacement, steering system overhaul, and preventive chassis maintenance.

Key Dimensions (As Labeled in Product Photos)

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

• Drive Mechanism: Precision-machined 20-Tooth (20T) helical drive gear (Right-Hand / RH rotation)

• Rotation Direction: Right-Hand (RH) rotation

• Operating Specifications: Nominal displacement 27.0 ml/r, Maximum operating pressure 130 bar, Operating speed range 500–3200 r/min, Controlled flow rate 20.0 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, 20T drive gear outer diameter, tooth pitch, and hydraulic port dimensions are labeled directly in the product photos.

• Please verify your existing pump rotation (RH), 20-tooth count, and mounting flange profile against the measurements shown in our photos before ordering.

Compatible Truck Models & Engine Applications

• ISUZU HEAVY COMMERCIAL TRUCKS:

  • Giga Series / C & E Series (CXZ, EXZ, CXH, CVR, EXR, CYZ Heavy Cargo Lorries, Wooden Body Trucks, Tippers, Dump Trucks, Concrete Mixers & Heavy Prime Movers)

• Engine Application:

  • Isuzu 10PC1 / 10PC1-N / 10PC1-S (15.0L V10 Diesel)

  • Isuzu 10PB1 (14.0L V10 Diesel)

  • Isuzu 10PD1 (16.7L V10 Diesel)

  • Isuzu 10PE1 (19.0L V10 Diesel)

• OEM & Cross-Reference Part Numbers:

  • 475-03940 / 47503940 (TBK / Industry Standard Part Number)

  • 447-03940 / 44703940

  • 475-03923 / 47503923

  • 1-19500-345-0 / 19500-345 / 19500345

  • 1-19500-447-0 / 1-19500447-0

• (Note: In the Malaysian commercial heavy vehicle market, Isuzu V10 series [10PC1/10PB1/10PD1/10PE1] on CXZ and EXZ chassis utilize this 20T RH gear-driven pump. Always verify your original gear tooth count [20T], rotation direction [RH], and flange profile prior to ordering.)

Why Choose Our Commercial Truck Parts?

• Calibrated High-Pressure Hydraulic Flow (27.0 ml/r, 130 bar): Precision-machined internal rotor and vanes provide continuous, smooth 20.0 L/min hydraulic assistance even at low engine idling speeds, minimizing driver fatigue during heavy load maneuvers.

• Induction-Hardened 20T RH Drive Gear: High-grade heat-treated 20-tooth gear profile resists gear tooth pitting, backlash, and premature wear against the engine timing gear train.

• Heavy-Duty Cast Housing: Rigid cast housing ensures structural alignment and eliminates leakage or casing distortion under high continuous hydraulic operating pressure.

• Integrated Flow Control & Relief Valve: Factory-calibrated 130-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 (20T) / Rotation (RH) / sample photos to our team via WhatsApp for instant confirmation!