HINO SUPER DOLPHIN PROFIA SH331 SH FS FR FN FW K13C EK100 12.9L 13.3L 22T SHROUDED GEAR DRIVEN ENGINE COOLING WATER PUMP ASSY WITH BACK PLATE (OE: 16100-3112 / 161003112 / 16100-3110 / 16100-3111 / 16100-3301 / HWP-004 / HP-3111 / HP3111)

Overview

The Hino Profia K13C / EK100 22T Gear-Driven Engine Water Pump Assembly (Water Pump Assy 16100-3112 / 161003112 / HWP-004 / HP-3111) is a commercial-grade engine cooling system component engineered specifically for Hino Super Dolphin and Profia heavy commercial transport trucks, prime movers, and industrial machinery powered by Hino K13C (12.9L) and EK100 (13.3L) inline-6 direct-injection diesel engines (Profia SH331, SH1K, FS1K, FR1K, FN1K, FW1K, and FH1K series prime movers, heavy cargo lorries, multi-axle tippers, dump trucks, and concrete mixers). Built with an enclosed 4-bolt top bearing cage housing a 22-Tooth (22T) helical drive gear, dual extended left-and-right coolant pipes, dual 2-bolt oval flange ports, and a pre-installed rear backing cover plate configuration, this heavy-duty cast iron water pump delivers continuous, high-volume coolant circulation through the cylinder block and oil cooler under heavy commercial haulage. Replacing a worn, noisy, leaking, or bearing-damaged water pump restores optimal cooling efficiency and prevents catastrophic engine overheating during long-haul operations.

Key Dimensions (As Labeled in Product Photos)

• Shrouded 22T Gear & Bearing Tower: Heavy-duty cast iron bearing cage (secured at the top by 4 hex bolts) housing a precision-machined 22-Tooth (22T) helical drive gear exposed through a side mesh window for direct engine timing gear engagement.

• Complete Assembly with Rear Cover Plate: Supplied complete with a pre-assembled steel rear backing cover plate (fastened by 3 hex bolts and 3 countersunk Phillips screws) and internal sealing gasket.

• Dual Extended Coolant Pipes & Flange Ports:

  • Left-hand extended coolant pipe (front view): Features a round hose outlet end, a machined 2-bolt oval side flange port, and an auxiliary metal bypass nipple.

  • Right-hand extended coolant pipe (front view): Features a straight round hose connection pipe alongside an upper 2-bolt oval flange port on the main housing.

• Auxiliary Mounting Bosses: Equipped with threaded mounting bosses along the lower front edge and base of the cast iron casing.

• Measurement Notice: Key visual features including the shrouded 22T helical drive gear, 4-bolt bearing cage, dual extended side pipes, oval flange ports, and rear backing cover plate are shown directly in our product photos.

• Please verify your existing water pump gear tooth count (22T), shrouded bearing tower style, and dual side pipe layout against our product photos before ordering.

Compatible Truck & Heavy Equipment Applications

• HINO HEAVY COMMERCIAL TRUCKS & PRIME MOVERS:

  • Super Dolphin & Profia Series (SH331, SH, FS, FR, FN, FW, FH, SS Heavy Prime Movers, Cargo Lorries, Tippers, Dump Trucks & Concrete Mixers)

• Engine Application:

  • Hino K13C (12.9L / 12,882cc Inline-6 Direct Injection Diesel / Turbo Diesel — 98Y / SH331 Series)

  • Hino EK100 (13.3L / 13,267cc Inline-6 Direct Injection Diesel — Select Compatible Variants)

• OEM & Cross-Reference Part Numbers:

  • 16100-3112 / 161003112 (Hino Genuine OEM)

  • 16100-3110 / 16100-3111

  • 16100-3301 / 161003301

  • S1610-03112 / S161003112

  • YY: HWP-004 / HWP004

  • HP: HP-3111 / HP3111

• (Note: Hino K13C engines use several distinct water pump designs depending on the chassis year and turbo configuration [such as 16100-3086 / HWP-004-1, 16100-3320 / HWP-003 for K13C-TE, and 16100-3670 / 16100-3820 for K13C-TV]. This 16100-3112 / HWP-004 / HP-3111 unit specifically features a 22-Tooth (22T) shrouded helical gear inside a 4-bolt bearing cage and dual extended left/right coolant pipes. Always confirm your gear tooth count [22T] and match the housing pipes against your old sample prior to ordering.)

Why Choose Our Commercial Truck Parts?

• Induction-Hardened 22T Shrouded Helical Gear: Heat-treated 22-tooth drive gear housed within a rigid 4-bolt cast iron bearing cage ensures precise meshing with the engine timing gear train and resists tooth pitting or gear backlash.

• Pre-Assembled Rear Cover Plate & Gasket: Factory-sealed with a 6-fastener steel backing plate (3 hex bolts + 3 countersunk screws) to eliminate rear cover leaks and save workshop installation time.

• Heavy-Duty Dual-Pipe Cast Iron Volute Body: Thick-walled cast iron housing with CNC-machined 2-bolt oval flange faces provides a secure, leak-free seal across all radiator and bypass lines.

• Reinforced Bearing & Mechanical Seal Cartridge: Engineered to withstand continuous high-load gear drive forces and elevated cooling system temperatures without shaft play or coolant weepage.

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

Need Help Confirming Fitment?

Unsure whether this K13C water pump matches your prime mover or lorry's existing engine setup?

• Check your old pump against the 22T shrouded gear cage, dual extended side pipes, and rear cover plate shown in our pictures.

• Or send your Chassis Number (VIN) / Engine Model (K13C / EK100) / Gear Teeth Count (22T) / sample photos to our team via WhatsApp for instant confirmation!