DAIHATSU DELTA DV57 DV57A DV58 V57 V58 TAFT F70 F75 1 TON 2 TON DL 2.8L DIESEL OD 68MM 29MM 4-HOLE HUB ENGINE COOLING WATER PUMP ASSY WITH BACK PLATE (OE: 16100-87394 / 16100-87394-000 / 16100-87391 / 16100-87392 / 16100-87393 / GWD-33A / D-19)

Overview

The Daihatsu Delta DV57 / DV58 DL 2.8L Engine Water Pump Assembly (Water Pump Assy 16100-87394 / 16100-87391 / GWD-33A / D-19) is a commercial-grade engine cooling system component engineered specifically for Daihatsu Delta 1-Ton and 2-Ton commercial light trucks and 4x4 utility vehicles powered by Daihatsu DL (2.8L / 2,765cc) and DG (2.5L) 4-cylinder naturally aspirated diesel engines (Delta DV57, DV57A, DV58, V57, V58 commercial cargo lorries, wooden body trucks, tippers, box vans, and Taft / Rocky / Fourtrak F70, F75 series). Built with a pre-installed 4-hole threaded pulley/fan mounting flange hub (68mm outer diameter with a 29mm stepped center pilot collar), a pre-assembled steel rear backing cover plate (fastened by 3 countersunk Phillips screws), a curved radiator hose connection pipe, an angled auxiliary side pipe, and a female threaded bypass/sensor port, this heavy-duty cast iron water pump delivers continuous, pressurized coolant circulation through the engine block, cylinder head, and radiator. Replacing a worn, noisy, bearing-seized, or leaking water pump prevents engine overheating, cylinder head warping, and blown head gaskets under daily commercial transport workloads.

Key Dimensions (As Labeled in Product Photos)

• Top Pulley / Fan Hub Configuration: Pre-installed CNC-machined steel mounting flange featuring 4 threaded bolt holes, 68mm flange outer diameter, 29mm stepped center pilot register collar, and a recessed/protruding center pilot opening.

• Complete Assembly with Rear Cover Plate: Supplied complete with a factory-sealed steel rear backing plate fastened by 3 countersunk Phillips screws, featuring 4 perimeter mounting through-holes and 1 large circular coolant passage opening.

• Coolant & Bypass Port Design:

  • Main Hose Neck: Curved large-diameter round hose inlet/outlet connection pipe on the left side for radiator hose attachment.

  • Auxiliary Side Pipe: Angled round hose spout on the right-hand volute chamber.

  • Female Threaded Port: Integrated CNC-machined female threaded sensor/bypass port located directly beside the auxiliary side pipe on the front casting.

• Perimeter Mounting Bosses: Reinforced cast iron body with raised through-bolt mounting bosses for direct alignment with the DL engine block.

• Measurement Notice: Key specifications including the 68mm top flange outer diameter, 29mm pilot step diameter, 4-hole threaded hub, dual hose pipes, threaded sensor port, and 3-screw rear backing plate are shown directly in our product photos.

• Please verify your existing water pump top flange diameter (68mm), pilot step (29mm), and side port configuration against our product photos before ordering.

Compatible Vehicle Models & Engine Applications

• DAIHATSU DELTA COMMERCIAL LIGHT TRUCKS:

  • Delta DV57 & DV57A Series (1-Ton & 2-Ton Commercial Cargo Lorries, Wooden Body Trucks, Tippers & Box Vans)

  • Delta DV58, V57, V57A, V58 Series (2.8D Commercial Trucks)

  • Delta DV26 / V26 Series (Select compatible diesel variants)

• DAIHATSU 4x4 UTILITY VEHICLES:

  • Taft / Rugger / Rocky / Fourtrak Series (F70, F75, F77, F78 running DL 2.8L diesel engines)

• Engine Application:

  • Daihatsu DL (2.8L / 2,765cc Inline-4 Naturally Aspirated Diesel)

  • Daihatsu DL-T (2.8L Inline-4 Turbo Diesel — Early Series)

  • Daihatsu DG (2.5L / 2,530cc Inline-4 Diesel)

• OEM & Cross-Reference Part Numbers:

  • 16100-87394 / 16100-87394-000 (Daihatsu Genuine OEM)

  • 16100-87391 / 16100-87391-000

  • 16100-87392 / 16100-87392-000

  • 16100-87393 / 16100-87393-000

  • GMB: GWD-33A / GWD33A

  • NPW: D-19 / D19

  • PARAUT / HITACHI: D3-024

• (Note: Daihatsu Delta models utilize different water pumps across engine series [DV57 uses DL 2.8L, whereas DV116 / DV99 / DV166 use Toyota-family 14B / 3B / 13B / B engines with 78mm–80mm hubs like 16100-59245]. This 16100-87394 / GWD-33A unit is specifically built for Delta DV57 / DV58 with DL 2.8L engines, featuring a 68mm 4-hole top hub with 29mm pilot step and 3-screw steel rear backing plate. Always check your engine code [DL 2.8L] and verify the 68mm / 29mm hub dimensions prior to ordering.)

Why Choose Our Commercial Truck Parts?

• Pre-Installed 68mm / 29mm 4-Hole Flange Hub: Factory-pressed, CNC-machined steel flange hub with 4 tapped mounting holes ensures concentric pulley/fan alignment and eliminates belt runout or wobble.

• Pre-Assembled Steel Rear Cover Plate: Comes factory-sealed with its 3-screw steel backing plate and internal gasket to eliminate rear cover leaks and save workshop installation time.

• Precision-Machined Threaded Port & Hose Necks: Cleanly machined female threaded sensor port and smooth hose connections ensure direct, leak-free integration with radiator and heater hoses.

• Heavy-Duty Cast Iron Volute Body: Thick-walled iron casting with reinforcing ribs resists engine vibration, high thermal stress, and fatigue cracking during heavy commercial operation.

• High-Grade Bearing & Mechanical Shaft Seal: High-capacity sealed bearing cartridge and wear-resistant mechanical seal withstand continuous fan belt tension and elevated cooling system pressures without developing shaft play or coolant weepage.

• Ready Stock & Fast Shipping: Readily stocked for quick dispatch.

Need Help Confirming Fitment?

Unsure whether this 16100-87394 water pump matches your Delta lorry's existing DL engine setup?

• Check your old pump against the 68mm / 29mm 4-hole top hub, dual hose necks, threaded sensor port, and 3-screw rear plate shown in our pictures.

• Or send your Chassis Number (VIN) / Engine Model (DL 2.8L) / sample photos to our team via WhatsApp for instant confirmation!