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SKU:
NLT2T04880
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Yanmar 3D84 Water Pump 129327-42100 – 3D84-1F 1FA 1G 1GA / Komatsu PC20 PC30
$127.59
In Stock
$127.59
Sale price
$127.59
Regular price
This engine water pump replaces Yanmar 129327-42100 on 3D84-family diesel engines including 3D84-1F, 3D84-1FA, 3D84-1G and 3D84-1GA applications.
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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
| Make / Family | Applications |
|---|---|
| Yanmar engines | 3D84-1F, 3D84-1FA, 3D84-1G, 3D84-1GA, selected 3T84-HLE applications |
| Komatsu compact excavators | Selected PC20-5, PC20-6, PC30 applications using the matching Yanmar engine/pump |
Product Overview
The pump circulates coolant through the engine block and radiator. Leakage from the shaft seal, rough bearings or a damaged impeller can cause coolant loss, overheating, belt noise or poor temperature control during sustained excavator operation.
Cross-reference research also associates 129327-42100 with Komatsu compact excavator installations such as PC20-series machines using Yanmar 3D84 engines. Match the casting, pulley/hub arrangement and part number because multiple water pumps are used across Yanmar 3D-series builds.
Key Features & Performance
- Cooling-system pump for Yanmar 3D84-series engines
- Cross-referenced to 129327-42100
- Common compact-excavator application including Yanmar-powered Komatsu machines
Technical Details
- Engine family: Yanmar 3D84
- System: engine coolant circulation
- Primary part reference: 129327-42100
Replaces Part Numbers
- 129327-42100
Frequently Asked Questions
Q: Why verify the hub/pulley arrangement?
A: Different engine builds can use different pump housings and fan/pulley mounting even within the same basic engine family.
Q: What should be serviced with a leaking pump?
A: Inspect the belt, hoses, thermostat and coolant condition and correct any overheating cause before returning the machine to service.
Confirm engine suffix and water-pump number before ordering.