NISSAN DIESEL UD BIG THUMB RESONA CW520 PF6 PF6T HEAVY DUTY DIESEL FUEL FEED AC PUMP MECHANICAL LIFT PUMP (16640-97013-1 / 16640-97013 / 1664097013)

Overview

The Nissan Diesel UD CW520 / PF6 Diesel Fuel Feed AC Pump (Mechanical Lift / Transfer Feed Pump 16640-97013-1) is a heavy-duty fuel supply component engineered for Nissan Diesel (UD) Big Thumb, Resona, and heavy commercial trucks powered by PF6, PF6-T, PF6-TA, and PF6-TB diesel engines (CW520, CK520, CD520, CG520 heavy dump trucks, tippers, cargo lorries, concrete mixers, and prime movers equipped with Diesel Kiki / Zexel / Bosch inline fuel injection systems). Flange-mounted directly to the side of the inline fuel injection pump, its camshaft-driven internal roller follower draws diesel from the fuel tank under constant low pressure and delivers it through the fuel filtration system into the high-pressure injection pump gallery. Replacing a worn or fatigued AC feed pump restores steady fuel supply pressure, cures prolonged morning cranking, prevents air ingress into the diesel circuit, and eliminates fuel starvation or power loss under heavy payload acceleration.

Engineered to commercial fleet specifications for dependable workshop replacement, fuel system overhaul, and engine chassis maintenance.

Key Dimensions (As Labeled in Product Photos)

• Mounting Configuration: Standard heavy-duty flange mounting

• Actuation Mechanism: Precision-machined roller tappet / cam follower

• Fuel Ports: Standard threaded inlet and outlet ports (for banjo bolt fuel line fittings)

• Primer Port: Compatible with standard screw-in / plunger hand primer units

• Measurement Notice: Key specifications including mounting hole center-to-center pitch, roller plunger protrusion height, spigot collar diameter, and fuel port thread sizes are labeled directly in the product photos.

• Please verify your existing pump mounting pattern and roller dimensions against the measurements shown in our photos before ordering.

Compatible Truck Models & Engine Applications

• NISSAN DIESEL (UD): Big Thumb, Resona Heavy Commercial Trucks (CW520, CK520, CD520, CG520, CWB520, Heavy Dump Trucks, Tippers, Cargo Lorries & Prime Movers)

• Engine Application:

  • Nissan Diesel PF6 (12.5L 6-Cylinder Inline Diesel)

  • Nissan Diesel PF6-T / PF6-TA / PF6-TB (Turbocharged & Intercooled)

  • Compatible with select PE6 / PD6 commercial inline pump applications

• OEM & Cross-Reference Part Numbers:

  • 16640-97013-1 / 16640-97013 / 1664097013 (Nissan UD OEM)

  • 16640-97012 / 1664097012 / 16640-97014 / 1664097014

  • 105210-series / 105217-series (Zexel / Diesel Kiki)

• (Note: Specifications may vary depending on the injection pump model and chassis production year. Please verify OEM numbers and sample dimensions prior to ordering.)

Why Choose Our Commercial Truck Parts?

• Precision Roller Cam Follower: Heat-treated, wear-resistant roller ensures smooth tracking against the injection pump camshaft, delivering consistent stroke volume with zero cam lobe galling.

• Positive Air-Tight Check Valves: High-precision spring-loaded internal valves prevent fuel drain-back to the tank overnight, ensuring instant morning engine fire-up.

• Rugged Heavy-Duty Housing: Precision-cast metal body resists severe engine vibrations, high under-hood temperatures, and continuous fuel line pressure pulses.

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

Need Help Confirming Fitment?

Unsure whether this AC feed pump matches your lorry's existing injection pump?

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

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