Hanchi Auto Parts
A4109 Water Pump Suitable for Isuzu 6WA1 6WG1 High Quality
Couldn't load pickup availability
If your parts book shows A4109, you need a water pump for 6WA1, 6WG1, 6WG1T and other listed engines. Ours is a matching replacement — same mounting holes, same belt pulley height, pressure-tested before packing. Related OE numbers include 1-13650-057-0, 1-13650112-6, 1-87310998-0, 8-98146-073-0, A4111.
Which engines use the A4109 water pump?
The OE application list reads: 6WA1; 6WG1; 6WG1T; 6WF1EFI straight pipe; 360/370; ZX850LC-3; ZX870H-3; Excavator Parts.
Match your engine model to the list and the pump will fit without rework.
What are the specifications of A4109?
| Parameter | Value |
| OE number | A4109 |
| Fits brand | Isuzu |
| TO Impeller height Ⅱ | 65.8 |
| TO Shaft head height | 44.7 |
| Mounting hole position | Aligned to OE mounting points |
| Threads on the pump body | 5-M10X1.5 |
| TO Gear height | 30.15 |
| Installation of water pipes | Water pipe fitted complete, no deformation |
| Air tightness testing | No leakage detected under negative pressure of 0.1 MPa |
| Appearance Ⅰ | Neutral finish, no third-party logos |
| Appearance Ⅱ | Clean surface: no dirt, rust or paint peeling |
| Assembly rotation | Turns freely by hand, no sticking or noise |
| Number of Teeth | 19 |
| Included Component 1 | O65X5-2 |
| Net weight | 3.30 kg |
| Packing | 4 pcs/ctn, 15.20 kg gross |
What part numbers interchange with A4109?
Dealers and fleet systems quote this pump under more than one OE number:
- 1-13650-057-0
- 1-13650112-6
- 1-87310998-0
- 8-98146-073-0
- A4111
Packing and quality checks
Each pump is packed individually; a master carton holds 4 pieces at 15.20 kg gross.
Every pump leaves the line after a leak test at a negative pressure of 0.1 MPa. No leaks, no exceptions.
Frequently asked questions
What vehicles or engines does A4109 fit?
A4109 fits 6WA1, 6WG1, 6WG1T and other listed engines. It is a Isuzu application water pump, and our aftermarket unit replaces it directly.
What other part numbers replace A4109?
A4109 interchanges with 1-13650-057-0, 1-13650112-6, 1-87310998-0, 8-98146-073-0, A4111. All of these refer to the same water pump assembly.
Is A4109 available from stock?
Yes, this number is in regular production. Lead time for carton quantities is usually a few days; ask us for current stock before ordering.
How much does the A4109 water pump weigh?
One pump weighs 3.30 kg net. A full carton of 4 pieces comes to 15.20 kg gross.
How do I confirm A4109 is the pump I need?
Check the OE number stamped on your old pump or in the parts book, then compare engine model and pulley height with the spec table on this page. If anything is unclear, send us a photo of the old unit.
Stock moves fast on this number. Send your inquiry with quantity and destination port for a firm quote.
Send the OE number, your quantity and your destination port — feel free to Contact Us. We reply with fitment confirmation and a quote.
OEM Avalible
Our company understands the challenges of bringing some special parts from paper to reality. Therefore, we offer our services to customers that need help.