How do I confirm pilotpart125054 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

A/C Compressor 12Y-979-1121 for Komatsu Crawler Dozer D39PX-22 D39EX-22

For Komatsu Air Conditioning Compressor

Air Conditioning Compressor 12Y979-1121 for Komatsu D39PX-22

Q: What part numbers are associated with this Air Conditioning Compressor?

12Y979-1121, 54592, 300-5191, PC2409, 4592, 03-3549, T6960, 129416, 3863068C1, SD6697, 6697, 6652

OEM / REF: 12Y979-1121SKU: pilotpart125054

A/C Compressor 12Y-979-1121 for Komatsu Crawler Dozer D39PX-22 D39EX-22 is a Air Conditioning Compressor replacement part indexed for Komatsu D39PX-22 and Komatsu D39EX-22, with 3 application records on file. Match OEM part number 12Y979-1121 and confirm fitment for Komatsu HVAC Parts before ordering.

Stock: In stock
Condition: New
Fitment: Komatsu HVAC Parts
Category: Air Conditioning Compressor

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$349.99USD/EA

~~$49,699.00~~Save 99%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Oct 22 – Oct 29
10	Oct 20 – Oct 27
50	Oct 18 – Oct 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.

Air Conditioning Compressor Description

This Air Conditioning Compressor is indexed for Komatsu D39PX-22; Komatsu D39EX-22; Komatsu s: Fit For Komatsu Crawler Dozer: D39PX-22, D39EX-22. Compare reference number 12Y979-1121 against the label on your existing Komatsu component before ordering.

Additional cross references on file: 54592, 300-5191, PC2409. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

12Y979-112154592300-5191 PC2409459203-3549 T6960 129416 3863068C1 SD669766976652

Applications

Komatsu D39PX-22
Komatsu D39EX-22
Komatsu s: Fit For Komatsu Crawler Dozer: D39PX-22, D39EX-22

Specifications

Voltage	24V
Clutch Diameter	119mm ~ 4 and 11/16 inches
No. of Grooves	8 groove
Part Number	12Y979-1121, 12Y-979-1121, 12Y9791121, 54592, 300-5191, PC2409, 4592, 03-3549, 033549, T6960, 129416, 3863068C1, SD6697, 6697, 6652, 5322, S5322, T4766, 1101386, 124725, 20-06697, 2006697, 2006697AM, 14SD6697, 14SD6697NC

Fitment Notes

Brand or application signal: Komatsu HVAC Parts
Product family: Air Conditioning Compressor
System category: HVAC Parts > Air Conditioning Parts > Air Conditioning Compressor
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.