How do I confirm pilotpart274840 fits my machine?

Compare the OEM or reference part number, machine model, engine model, and serial number. You can also submit a fitment inquiry before ordering.

In Stock

Temperature Switch Engine Thermostat 129455-49801 for Yanmar 3TNV84 3TNV88 4TNV84 Engine

For Yanmar Thermostat

Engine Thermostat 129455-49801 for Yanmar 3TNV84 Engine

OEM / REF: 129455-49801SKU: pilotpart274840

Temperature Switch Engine Thermostat 129455-49801 for Yanmar 3TNV84 3TNV88 4TNV84 Engine is a Engine Thermostat replacement part indexed for Yanmar · 3TNV84 and Yanmar · 3TNV88, with 3 application records on file. Match OEM part number 129455-49801 and confirm fitment for Yanmar Engine Spare Parts before ordering.

Stock: In stock
Condition: New
Fitment: Yanmar Engine Spare Parts
Category: Thermostat

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$97.99USD/EA

~~$11,499.00~~Save 99%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Sep 22 – Sep 29
10	Sep 20 – Sep 27
50	Sep 18 – Sep 25

Estimates from today; confirm exact lead time before payment.

Quantity

Buy online now or add to your quote list for bulk pricing and fitment confirmation.

Confirm fitment before ordering →

Lead times can vary by freight route and customs. Contact support for expedited shipping.

Thermostat Description

This Thermostat is indexed for Yanmar · 3TNV84; Yanmar · 3TNV88; Yanmar · 4TNV84. Compare reference number 129455-49801 against the label on your existing Yanmar component before ordering.

Before checkout, compare OEM part number 129455-49801, connector layout, mounting position, and machine serial number. For high-value or fitment-sensitive parts, submit the fitment form below so support can verify the match.

Part Numbers and Cross References

129455-49801

Applications

Yanmar · 3TNV84
Yanmar · 3TNV88
Yanmar · 4TNV84

Specifications

Part Number	129455-49801, 12945549801

Fitment Notes

Brand or application signal: Yanmar Engine Spare Parts
Product family: Thermostat
System category: Engine Spare Parts > Lubrication & Cooling Systems > Thermostat
Recommended verification: OEM number, engine model, serial number, old part photos, and dimensions.

Shipping & Returns

Availability: InStock
Shipping: Shipping quotes can be confirmed before payment for heavy or urgent orders.
Returns: Returns are easier when fitment is confirmed before ordering.
B2B support: Bulk, fleet, and repair-shop requests can be handled through the inquiry form.

Frequently Asked Questions

How do I confirm this part fits my machine?

Match the OEM or reference number first, then verify machine model, engine model, serial number, connector layout, mounting points, and old part photos.

Can I order if my part number is not listed?

Yes. Send the old part number, machine plate, and photos through the fitment inquiry form. Support can review possible replacements or alternatives.

Is this an OEM part?

Products are indexed as replacement parts unless explicitly marked otherwise. Always compare reference numbers and confirm fitment before purchase.