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Aftermarket replacement water pump for Mitsubishi S4K and S6K engines (Caterpillar E320B excavators). It replaces Mitsubishi part number 34345-10010: the water pump listed by Mitsubishi as part number 34345-10010.
Fits Mitsubishi S4K and S6K engines (Caterpillar E320B excavators). It is built to the same mounting, wiring and connector layout as the part it replaces, so it fits in place of the old one without changes to the machine.
Check the part number on the label of the old unit, or in the parts manual for your machine's serial number range, before ordering. Sold as a single unit, shipped worldwide.
| Part Type | Water Pump |
| Replaces | Mitsubishi 34345-10010 |
| Fits | Mitsubishi S4K and S6K engines (Caterpillar E320B excavators) |
| Condition | New, aftermarket |
| Stat. HS-Code | 841330 |
Mitsubishi machines and engines
Check the part number on your old unit before ordering.
| Pack | Mitsubishi Part No.(SPM Part No.) | Fits |
|---|---|---|
| 1 Piece | 34345-10010(SPM-HEP-2624) | Mitsubishi S4K and S6K engines (Caterpillar E320B excavators) |
Coolant leak from the weep hole
Coolant dripping from the pump body means the seal has failed. Replace the pump before the engine runs low and overheats.
Overheating
A worn impeller moves less coolant. If the engine runs hot with a good thermostat and radiator, check the pump.
Bearing noise or play
A rumble or play at the pulley means the bearing is worn and the seal will follow.
Service at the same time
Change the thermostat, belts and coolant while the pump is off.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| eBay, aftermarket seller | USD 88.00 | 5 Oct 2026 |
| Spare Part Mart | USD 70.40 | Today |
Our price of USD 70.40 is approximately 20% less than this seller.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
No. It is an aftermarket part made to fit in place of Mitsubishi 34345-10010. It is not made by or affiliated with Mitsubishi; the Mitsubishi part number is used only to show what it replaces.
It fits Mitsubishi S4K and S6K engines (Caterpillar E320B excavators). Machines change parts between serial number ranges, so check the number on your old part or in your parts manual.
It is made to the same mounting and connections as the original part. Fit new gaskets and seals where they are used, and check for leaks and correct operation before putting the machine back to work.
Yes, we ship worldwide. Shipping is calculated at checkout, and every order is covered by our 30 day money back guarantee and price beat guarantee.
Prices depend on your postcode.
In USD for the quantity selected. The exact cost is confirmed at checkout.
