TOYOTA HILUX LN106 LN166 LN85 DYNA LY211 LY220 HIACE LH112 LH113 2L 3L 5L 2.4L 2.8L 3.0L DIESEL OD 78MM 23MM 4-HOLE HUB ENGINE COOLING WATER PUMP ASSY (OE: 16100-59256 / 1610059256 / 16100-59255 / 16100-59257 / 16100-59155 / GWT-79A / WPT-001B)

Overview

The Toyota Hilux / Dyna / Hiace 2L 3L 5L Engine Water Pump Assembly (Water Pump Assy 16100-59256 / 16100-59255 / 16100-59257 / GWT-79A / WPT-001B) is a commercial-grade engine cooling system component engineered specifically for Toyota Hilux 4x4 pickups, Toyota Dyna / Toyoace light commercial trucks, and Toyota Hiace commercial vans powered by Toyota 2L (2.4L), 2L-T / 2L-TE (2.4L Turbo), 3L (2.8L), and 5L / 5L-E (3.0L) 4-cylinder SOHC diesel engines (Hilux LN106, LN166, LN85, LN111, LN145, LN150, Dyna LY211, LY212, LY220, LY230, LH80, and Hiace LH102, LH112, LH113, LH114, LH162, LH172 commercial work trucks, tippers, cargo lorries, panel vans, and utility haulers). Built with a pre-installed 4-hole threaded pulley/fan mounting flange hub (78mm outer diameter with a 23mm stepped pilot register collar), reinforced curved bearing neck with external stiffening ribs, circular multi-hole mounting base, and high-flow cast impeller, this heavy-duty 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, blown head gaskets, and cylinder head cracking under sustained heavy towing and commercial 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, 78mm flange outer diameter, 23mm stepped pilot register collar, and a precision center shaft pilot pin.

• Mounting Base Configuration: Circular multi-bolt perimeter mounting flange base with precision through-bolt mounting holes and a flat-machined rear face for direct installation onto the timing belt case and engine water passage cavity.

• Housing Design: High-strength cast aluminium / iron housing reinforced with radial structural ribs fanning out around the bearing collar to resist heavy serpentine belt radial loads.

• Measurement Notice: Key specifications including the 78mm top hub outer diameter, 23mm stepped pilot collar, 4-hole threaded hub, and circular multi-bolt mounting base are shown directly in our product photos.

• Please verify your existing water pump top flange diameter (78mm), pilot step (23mm), and bolt hole layout against our product photos before ordering.

Compatible Vehicle Models & Engine Applications

• TOYOTA HILUX COMMERCIAL 4x4 & 4x2 PICKUPS:

  • Hilux LN106 / LN107 / LN111 (2.8L 3L Diesel 4WD Pickups)

  • Hilux LN166 / LN167 / LN165 (3.0L 5L / 2.4L 2L-T Diesel Double Cab & Single Cab Pickups)

  • Hilux LN85 / LN90 / LN145 / LN150 (2.4L 2L / 3.0L 5L Diesel Work Trucks)

• TOYOTA DYNA & TOYOACE COMMERCIAL TRUCKS:

  • Dyna LY211 / LY212 / LY220 / LY230 (3L 2.8D / 5L 3.0D Commercial Lorries & Tippers)

  • Dyna LH80 / LY50 / LY60 Series (2L 2.4D Commercial Light Trucks)

• TOYOTA HIACE COMMERCIAL VANS & WINDOW VANS:

  • Hiace LH102 / LH104 / LH108 / LH112 / LH113 / LH114 / LH118 (2L 2.4D / 3L 2.8D Panel & Window Vans)

  • Hiace LH162 / LH168 / LH172 / LH174 / LH178 / LH184 (5L 3.0D Commuter Vans)

• TOYOTA LAND CRUISER PRADO:

  • Land Cruiser LJ70 / LJ71 / LJ78 (2.4L 2L-T Turbo Diesel Series)

• Engine Application:

  • Toyota 2L / 2L-T / 2L-TE (2.4L / 2,446cc Inline-4 SOHC Diesel / Turbo Diesel)

  • Toyota 3L (2.8L / 2,779cc Inline-4 SOHC Diesel)

  • Toyota 5L / 5L-E (3.0L / 2,986cc Inline-4 SOHC Diesel)

• OEM & Cross-Reference Part Numbers:

  • 16100-59256 / 1610059256 (Toyota Genuine OEM)

  • 16100-59255 / 1610059255

  • 16100-59257 / 1610059257

  • 16100-59155 / 1610059155

  • 16100-09092 / 16100-09102

  • GMB: GWT-79A / GWT-115A

  • AISIN: WPT-001B / WPT-001

  • NPW: T-76 / T-91

• (Note: Toyota L-series diesel engines [2L / 3L / 5L] use several water pump hub configurations depending on the cooling fan clutch version. This 16100-59256 assembly specifically features a 78mm top hub diameter with a 23mm stepped pilot collar and 4 threaded mounting holes. Always measure your old sample pump's top hub OD [78mm] and pilot step [23mm] prior to ordering.)

Why Choose Our Commercial Fleet Parts?

• Pre-Installed 78mm / 23mm 4-Hole Flange Hub: Precision-pressed steel flange hub with 4 tapped bolt holes ensures concentric fan clutch and pulley alignment, eliminating belt runout or vibrations.

• Ribbed High-Strength Casing: Reinforced radial ribs around the bearing neck distribute belt tension evenly, preventing housing deformation and fatigue cracks during heavy haulage.

• High-Flow Internal Impeller: Precision-balanced impeller blades deliver steady, pressurized coolant circulation through the engine block and radiator, preventing localized hot spots.

• High-Capacity Bearing & Mechanical Seal: Heavy-duty sealed roller/ball bearing paired with a wear-resistant ceramic-carbon shaft seal prevents bearing play and premature coolant weepage.

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

Need Help Confirming Fitment?

Unsure whether this water pump matches your pickup, lorry, or van's existing 2L, 3L, or 5L engine setup?

• Check your old pump against the 78mm / 23mm 4-hole top hub and circular mounting base shown in our pictures.

• Or send your Chassis Number (VIN) / Engine Model (2L / 3L / 5L) / sample photos to our team via WhatsApp for instant confirmation!