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SKU:
NLT2T03823
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Water Pump 121450-42010 129350-42010 121023-42100 for Yanmar YM1802 YM1810 YM1820
$83.69
In Stock
$83.69
Sale price
$83.69
Regular price
This is an engine water pump for compatible Yanmar tractor/engine applications and select John Deere compact tractors, reference 121450-42010.
Estimated delivery between
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
We do our best to list all compatible models, but equipment can vary by engine, serial number and production configuration. Use the part numbers and fitment details below to confirm your application.
| Equipment / Engine | Compatible Application |
|---|---|
| Yanmar tractor | YM1802 / YM1810 / YM1820 and related YM applications |
| Yanmar engine | 3T72 / 3T80 / 3T82 / 3T84 families |
| John Deere compact tractor | 650 / 655 / 750 and other verified applications using this pump family |
Product Overview
The pump circulates coolant through the engine so operating heat can be transferred to the radiator. Leakage at the shaft seal, bearing noise, pulley wobble or recurring overheating can indicate that the original pump is nearing failure.
The researched family cross-references 121450-42010, 129350-42010 and 121023-42100 and appears across Yanmar 3T72/3T80/3T82/3T84 applications as well as selected John Deere compact tractors. Housing and pulley configuration should still be matched to the existing pump.
Key Features & Performance
- Cooling-system pump for multiple Yanmar three-cylinder diesel families
- Cross-references several common Yanmar water-pump numbers
- Application coverage includes Yanmar YM tractors and selected John Deere compact tractors
- Restores coolant circulation when bearing or seal failure is confirmed
Specifications
| Reference numbers | 121450-42010 / 129350-42010 / 121023-42100 |
| Part type | Engine coolant water pump |
| Application | Yanmar three-cylinder diesel family |
Before You Order
Compare the pump casting, bolt pattern, pulley/flange and hose outlet to the old pump. Confirm the engine model, not just the tractor decal.
Frequently Asked Questions
Can a water pump leak only when the engine is hot?
Yes. A worn shaft seal can leak more once the cooling system is hot and pressurized, so dried coolant residue around the pump is worth inspecting.
Is this an OEM part?
This listing is for a replacement component for the applications shown above. Match the reference number, physical configuration and machine or engine details before ordering.