How do I confirm pilotpart444891 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

2 Piece kit Thermostat Regulator 4W4011 1209453 170 Degree For Caterpillar CAT 3406E C15 C16 C18 3400 engine

For Caterpillar Thermostat

Engine Thermostat 120-9453 for Caterpillar 3400 Engine

Q: What part numbers are associated with this Thermostat?

120-9453, 4W4011, 6I4954, 7E6210, 7E9269, 381849

OEM / REF: 120-9453SKU: pilotpart444891

2 Piece kit Thermostat Regulator 4W4011 1209453 170 Degree For Caterpillar CAT 3406E C15 C16 C18 3400 engine is a Engine Thermostat replacement part indexed for Caterpillar · 3400 and Caterpillar · 3406E, with 3 application records on file. Match OEM part number 120-9453 and confirm fitment for Caterpillar Engine Sp...

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

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$110.40USD/EA

~~$29,899.00~~Save 100%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Oct 23 – Oct 30
10	Oct 21 – Oct 28
50	Oct 19 – Oct 26

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 Caterpillar · 3400; Caterpillar · 3406E; Caterpillar · C15; Caterpillar · C16. Compare reference number 120-9453 against the label on your existing Caterpillar component before ordering.

Additional cross references on file: 4W4011, 6I4954, 7E6210. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

120-9453 4W4011 6I4954 7E6210 7E9269 381849

Applications

Caterpillar · 3400
Caterpillar · 3406E
Caterpillar · C15
Caterpillar · C16
Caterpillar · C18

Specifications

Part Number	120-9453, 1209453, 4W4011, 6I4954, 7E6210, 7E9269, 381849

Fitment Notes

Brand or application signal: Caterpillar 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.