Hanchi Auto Parts
148-1821 Water Pump Suitable for Mitsubishi High Quality
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148-1821 belongs to the Mitsubishi;Caterpillar cooling system parts family. The pump sits on 4M40 and Cat307B engines. Our aftermarket equivalent follows the OE dimensions and passes air-tightness testing under a negative pressure of 0.1 MPa. It also replaces —.
Which engines use the 148-1821 water pump?
Fitment covers 4M40; Cat307B.
When in doubt, compare the old pump pulley height against our spec table below — it settles most fitment questions.
What are the specifications of 148-1821?
| Parameter | Value |
| OE number | 148-1821 |
| Fits brand | Mitsubishi;Caterpillar |
| TO Impeller height Ⅱ | 15.7 |
| TO Shaft head height | 80.85 |
| Mounting hole position | Aligned to OE mounting points |
| Flange thread | M8X1.25 |
| TO Flange height | 75 |
| Flange jumping | 0.07 |
| 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 | OM101 |
| Net weight of one | 1.01 |
| Net weight | 1.01 kg |
| Packing | 8 pcs/ctn, 10.11 kg gross |
Packing and quality checks
Packing runs 8 pumps per carton, 10.11 kg gross weight, carton size 38.5 x 32 x 31.5 cm.
We leak-test each unit at a negative pressure of 0.1 MPa, then spin it by hand to confirm free rotation.
Frequently asked questions
What vehicles or engines does 148-1821 fit?
148-1821 fits 4M40 and Cat307B engines. It is a Mitsubishi;Caterpillar application water pump, and our aftermarket unit replaces it directly.
Is 148-1821 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 148-1821 water pump weigh?
One pump weighs 1.01 kg net. A full carton of 8 pieces comes to 10.11 kg gross.
How do I confirm 148-1821 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.
Message us with the OE number off your old pump. We reply with fitment confirmation and a price the same day.
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
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