HINO 500 RANGER KOBELCO EXCAVATOR SK300-8 SK330-8 SK350-8 SK350-9 SK360-8 J08E J08E-T J08E-TM 7.7L OD 98MM 50MM 4-HOLE HUB TALL TOWER HEAVY DUTY ENGINE COOLING WATER PUMP ASSY (OE: 16100-E0070 / 16100E0070 / 16100-4290 / VH16100E0070 / S1610-0E0070 / HWP-055)

Overview

The Hino J08E / Kobelco Excavator Heavy-Duty Engine Water Pump Assembly (Water Pump Assy 16100-E0070 / 16100E0070 / 16100-4290 / HWP-055) is a commercial-grade engine cooling system component engineered specifically for heavy hydraulic excavators and Hino 500 heavy commercial trucks powered by Hino J08E, J08E-T, J08E-TM, and J08E-TI (7.7L / 7,684cc) 24-valve common-rail turbocharged diesel engines (Kobelco SK300-8, SK330-8, SK350-8, SK350-9, SK360-8, New Holland E385B, E385BLC, and Hino 500 heavy-duty transport trucks). Built in the heavy-duty excavator tall-tower configuration, this cast iron water pump features a pre-installed 4-hole threaded pulley/fan mounting flange hub (98mm outer diameter with a 50mm stepped center pilot collar), tall reinforced cylindrical bearing tower, integrated upright side mounting bracket ear, machined 2-bolt oval flange port with an O-ring sealing groove, dual auxiliary front ports, an 11-hole perimeter mounting base, and a shrouded closed-face cast iron impeller. Replacing a worn, noisy, bearing-seized, or leaking water pump restores high-volume, pressurized coolant circulation through the cylinder block, oil cooler, and radiator, preventing severe overheating and head gasket failure under continuous heavy excavation and commercial haulage 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, 98mm flange outer diameter, 50mm stepped center pilot register collar, and a precision center shaft pilot cap.

• Tall Bearing Tower & Structural Reinforcement: Extended heavy-duty cylindrical bearing housing reinforced with vertical structural stiffening ribs and an integrated upright side mounting bracket ear featuring 2 precision mounting holes.

• Coolant Flange & Port Layout:

  • Machined 2-bolt oval side flange port featuring an integrated recessed O-ring sealing groove for leak-free coolant passage sealing.

  • Dual auxiliary front ports / mounting bosses integrated directly into the lower front section of the volute housing.

• Impeller Design & Mounting Base:

  • Heavy-duty shrouded closed-face cast iron disc impeller engineered for high-pressure coolant circulation and cavitation resistance.

  • 11-hole perimeter mounting flange base with a flat CNC-machined rear sealing surface for direct installation onto the engine block / timing gear housing.

• Measurement Notice: Key specifications including the 98mm top flange outer diameter, 50mm stepped pilot collar, 4-hole threaded hub, tall bearing neck, 2-bolt oval O-ring port, side bracket ear, and shrouded rear impeller are shown directly in our product photos.

• Please verify your existing water pump top flange diameter (98mm), pilot step (50mm), and tall tower profile against the measurements shown in our photos before ordering.

Compatible Equipment & Truck Applications

• HEAVY CONSTRUCTION EXCAVATORS:

  • Kobelco Hydraulic Excavators (SK300-8, SK330-8, SK350-8, SK350-9, SK360-8, SK380D-8 Series running Hino J08E engines)

  • New Holland Hydraulic Excavators (E385B, E385BLC Series)

• HINO HEAVY COMMERCIAL TRUCKS:

  • Hino 500 & Ranger Heavy-Duty Series (FM, FG, GH Series powered by J08E common-rail engines)

• Engine Application:

  • Hino J08E / J08E-T / J08E-TM / J08E-UV / J08E-TI / J08E-VD (7.7L / 7,684cc Inline-6 24-Valve Common-Rail Turbocharged & Intercooled Diesel)

• OEM & Cross-Reference Part Numbers:

  • 16100-E0070 / 16100E0070 (Hino / Kobelco Genuine OEM)

  • 16100-4290 / 161004290

  • VH16100E0070 / VH16100-E0070

  • S1610-0E0070 / S16100E0070

  • 16100-0070 / 161000070

  • YY: HWP-055 / HWP055 (J08E Heavy Duty / Excavator)

• (Note: Hino J08 series engines use multiple water pump designs between commercial trucks and heavy excavation machinery. Standard truck J08C / J05C pumps [such as 16100-3475 or 16100-3464] feature shorter bearing necks with 79mm hubs and 40mm pilot collars. This 16100-E0070 / 16100-4290 [HWP-055] is specifically built for heavy excavation machinery (Kobelco SK330-8 / SK350-8) and heavy-duty J08E engines, featuring a tall bearing tower, oversized 98mm 4-hole hub with 50mm pilot step, and an upright side bracket ear. Always measure your old pump's top hub [98mm] and pilot step [50mm] prior to ordering.)

Why Choose Our Commercial Truck & Machinery Parts?

• Heavy-Duty Excavator Tall-Tower Casing: Thick-walled cast iron housing with heavy reinforcing ribs withstands extreme hydraulic system thermal loads and continuous belt tension without cracking.

• Pre-Installed 98mm / 50mm 4-Hole Flange Hub: Factory-pressed, CNC-machined steel hub with 4 tapped mounting holes ensures concentric pulley/fan clutch alignment and eliminates belt vibration under heavy load.

• High-Flow Shrouded Closed-Face Impeller: Dynamically balanced shrouded cast iron impeller maximizes pressurized coolant circulation across the 7.7L engine block and oil cooler while preventing cavitation.

• Precision CNC-Machined O-Ring Flange & Base: Cleanly machined 2-bolt oval port with O-ring groove and flat 11-hole mounting base ensure an exact, leak-free seal directly onto the timing gear housing.

• Heavy-Duty Bearing & Mechanical Seal Cartridge: High-capacity sealed bearing assembly and wear-resistant silicon carbide/carbon mechanical shaft seal prevent bearing play and coolant weepage.

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

Need Help Confirming Fitment?

Unsure whether this 16100-E0070 heavy-duty water pump matches your excavator or lorry's J08E engine setup?

• Check your old pump against the 98mm / 50mm 4-hole top hub, tall neck tower, side bracket ear, and 11-hole base shown in our pictures.

• Or send your Machine Serial Number / Excavator Model (SK330-8 / SK350-8) / Engine Model (J08E) / sample photos to our team via WhatsApp for instant confirmation!