Hanchi Auto Parts
MM409303 Water Pump Suitable for Mitsubishi 302.5C S4L High Quality
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Looking for MM409303? It is the Mitsubishi;Caterpillar OE reference for a cooling water pump used on 302.5C, S4L, S3L2 and other listed engines. The replacement we supply keeps the same fit and pulley dimensions. Net weight 1.27 kg, packed 8 per carton.
Which engines use the MM409303 water pump?
This pump was designed for 302.5C; S4L; S3L2; MT1401， MT1601; MT160/D; MT1801; MT210/D; K4E-S.
When in doubt, compare the old pump pulley height against our spec table below — it settles most fitment questions.
What are the specifications of MM409303?
| Parameter | Value |
| OE number | MM409303 |
| Fits brand | Mitsubishi;Caterpillar |
| TO Shaft head height | 114.3 |
| Mounting hole position | Aligned to OE mounting points |
| Flange thread | M6X1 |
| TO Flange height | 108.5 |
| Flange jumping | 0.07 |
| TO Impeller height Ⅰ | 1 |
| 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 |
| Included Component 1 | D-ZG3-8-19 |
| Included Component 2 | SG3-8-44 |
| Net weight | 1.27 kg |
| Packing | 8 pcs/ctn, 12.16 kg gross |
What part numbers interchange with MM409303?
Depending on the catalog you use, the same pump shows up as:
- CA2720463
- CA2720464
- MM407405
- MM409302
Packing and quality checks
Each pump is packed individually; a master carton holds 8 pieces at 12.16 kg gross.
Air-tightness is checked pump by pump under a negative pressure of 0.1 MPa before packing.
Frequently asked questions
What vehicles or engines does MM409303 fit?
MM409303 fits 302.5C, S4L, S3L2 and other listed engines. It is a Mitsubishi;Caterpillar application water pump, and our aftermarket unit replaces it directly.
What other part numbers replace MM409303?
MM409303 interchanges with CA2720463, CA2720464, MM407405, MM409302. All of these refer to the same water pump assembly.
Is MM409303 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 MM409303 water pump weigh?
One pump weighs 1.27 kg net. A full carton of 8 pieces comes to 12.16 kg gross.
How do I confirm MM409303 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.
Bulk pricing starts at one carton. Ask for a quote with your target quantity.
Send the OE number, your quantity and your destination port — feel free to Contact Us. We reply with fitment confirmation and a quote.
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