Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.

Sunair · HVAC
CO-3003A
In stock · ships from Knoxville
The Sunair CO-3003A is a York-style ET210L A/C compressor with Tube‑O ports and left‑hand suction, built for heavy‑duty R134a cab cooling systems on Class 6‑8 trucks, buses, and off‑highway equipment.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 7 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Freightliner
International
Kenworth
Peterbilt
Western Star
Other applications
Freightliner
International
Kenworth
Peterbilt
Western Star
Other applications
Fits vehicles equipped with York 210‑style compressor, Tube‑O connections, and left‑hand suction port. Always verify port orientation, mounting pattern, and pulley/clutch before ordering. Cross‑references to multiple OEM and aftermarket part numbers.
Part data verified against 1 catalog sources
Numbers this part supersedes or interchanges with. Showing 15 of 15.
Different year, make, or config? Get a confirmation against your truck in under a minute.
This two‑cylinder reciprocating compressor is a direct replacement for worn, seized, or leaking York 210 units, restoring reliable air conditioning. It uses PAG 46 oil and matches many OEM and aftermarket York‑style compressors that have left‑hand suction plumbing. Installation requires confirming port orientation, mounting, and oil charge.
Part Number: CO-3003A
AC COMPRESSOR
Dealer: Knox Trailers
Compatibility, alternatives, and more