OEM / REF: C3974549SKU: pilotpart370587
New Air Compressor 3974549 C3974549 for Cummins 6BT5.9 4BT3.9 B4.5 B5.9 4BT Engine is a A/C Compressor replacement part for Cummins Machinery & Equipment, categorized under Machinery & Equipment > A/C Compressor. Use OEM part number C3974549 and confirm machine model, engine model, and serial details before checkout.
This A/C Compressor is indexed for Cummins Cummins 6BT5.9 4BT3.9 B4.5 B5.9 4BT Engine. Compare reference number C3974549 against the label on your existing Cummins component before ordering.
Before checkout, compare OEM part number C3974549, 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.
Match the OEM or reference number first, then verify machine model, engine model, serial number, connector layout, mounting points, and old part photos.
Yes. Send the old part number, machine plate, and photos through the fitment inquiry form. Support can review possible replacements or alternatives.
Products are indexed as replacement parts unless explicitly marked otherwise. Always compare reference numbers and confirm fitment before purchase.
