NISSAN DIESEL UD BIG THUMB RESONA CW520 CW53 CW55 RG8 23T LH BIG SHAFT DOUBLE CARTRIDGE TANDEM HEAVY DUTY HYDRAULIC POWER STEERING PUMP P/STG PUMP (14670-97310 / 1467097310)

Overview

The Nissan Diesel UD RG8 Hydraulic Power Steering Pump (P/STG Pump Assembly 14670-97310 / 1467097310) is a heavy-duty hydraulic steering component engineered for Nissan Diesel (UD) Big Thumb, Resona, and heavy commercial transport trucks powered by the Nissan RG8 V8 diesel engine (CW53, CW520, CW55, CWB, CK, CD, and GW series heavy cargo lorries, dump trucks, tippers, concrete mixers, prime movers, and multi-axle heavy haulers requiring high-capacity hydraulic steering volume). Built in the Left-Hand (LH) rotation, 23-Tooth (23T) drive gear, Big Shaft (B.Shaft) Double Cartridge (Tandem Dual Vane) configuration, this pump delivers dual-circuit high-pressure hydraulic flow to feed the power steering gearbox smoothly without cavitation or pressure drop. Replacing a worn, whining, or leaking double-cartridge steering pump eliminates heavy or stiff steering, cures steering wheel shuddering at low engine idle RPM, prevents cross-circuit pressure loss, 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: Standard heavy-duty flange mounting (direct engine timing gear casing mount)

• Drive Mechanism: Precision-machined 23-Tooth (23T) helical drive gear (Big Shaft / B.Shaft configuration)

• Internal Configuration: Double Cartridge (Tandem dual-rotor/vane pump assembly)

• Rotation Direction: Left-Hand (LH) rotation

• Hydraulic Ports: Threaded high-pressure discharge port (3/4-16UNF) & suction feed inlet port (approx. 30 mm)

• Operating Specifications: Nominal displacement ~2 × 15.8 ml/r, Maximum operating pressure ~125 bar, Controlled flow rate ~18.0 L/min

• Measurement Notice: Key specifications including mounting flange bolt pitch, pilot spigot diameter, 23T gear outer diameter, big shaft diameter, double cartridge body length, and hydraulic port dimensions are labeled directly in the product photos.

• Please verify your existing pump rotation (LH), 23-tooth count, big shaft diameter, and double-cartridge housing against the measurements shown in our photos before ordering.

Compatible Truck Models & Engine Applications

• NISSAN DIESEL (UD TRUCKS): Big Thumb & Resona Heavy Commercial Trucks (CW53, CW520, CW55, CWB, CK, CD, GW Series Heavy Cargo Lorries, Wooden Body Trucks, Tippers, Dump Trucks & Prime Movers)

• Engine Application:

  • Nissan Diesel RG8 (17.9L V8 Heavy Diesel)

• OEM & Cross-Reference Part Numbers:

  • 14670-97310 / 1467097310 (Nissan / UD Trucks Genuine OEM)

  • 14670-97310-LH (Malaysian supplier reference)

• (Note: Specifications vary significantly between single cartridge vs. double cartridge, small shaft vs. big shaft, and LH vs. RH rotation. Please verify your original part number and sample dimensions prior to ordering.)

Why Choose Our Commercial Truck Parts?

• Precision Dual-Cartridge Hydraulic Flow: Dual rotor and vane sets ensure continuous, uninterrupted hydraulic volume, eliminating steering resistance or heavy spots during tight yard and job-site maneuvering.

• Induction-Hardened 23T Big Shaft Drive Gear: Heavy-duty hardened big shaft and 23-tooth gear profile prevent shaft shear, gear tooth pitting, and premature backlash against the engine timing gear train.

• Integrated Flow Control & Relief Valve: Factory-calibrated 125-bar internal pressure regulation ensures stable line pressure while preventing high-pressure line failure 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 (23T) / sample photos to our team via WhatsApp for instant confirmation!