Part identification
Reference numbers
Search with or without hyphens. Match the complete number on the original part.

6 verified product photos · Select a thumbnail to change the main image.
Controllers & Displays
28170119 Engine Controller ECU for CAT 320D 323D Excavators. Reference numbers: 28170119, 1104D-E44TA. Documented equipment or engine fitment includes CAT C6.6, CAT C6.4, CAT C4.2, CAT 1104D-E44T, CAT Perkins C4.4 C6, Perkins 1104D-E44T, Perkins C6.6. Compare the complete part number, electrical rating, connector or mounting configuration, and machine serial range before ordering.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
Product fitment guide
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Search with or without hyphens. Match the complete number on the original part.
Product summary
Before ordering
Machine fitment
7 model references
Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.
Quick fitment answers
Recorded compatible model references include CAT C6.6, CAT C6.4, CAT C4.2, CAT 1104D-E44T, CAT Perkins C4.4 C6, Perkins 1104D-E44T, Perkins C6.6. Confirm the complete part number and machine serial range before ordering.
The recorded reference family includes 28170119, 1104D-E44TA. Match the complete number and physical configuration before replacing the original part.
Match the complete part number on the original controller label. Compare the front-panel button layout and display position with the product photos. Compare the rear connector count, connector shape and keying before installation. Send clear photos of the original unit and connector layout when requesting a quote.
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