This is a Remanufactured Carter #4637S Carburetor to fit all 1968 Mopar 440 Engines with Auto Trans and A/C. Fits many popular body styles including musclecar Charger R/T and GTX. Would actually fit and work on many Chrysler 440 Engines. Rebuilt by Precision Carburetor but it was never installed or used by us, and as such we cannot guarantee it. Might need a new set of gaskets but is a very clean carb. All shafts move smoothly and nothing is broken or missing. A very rare find.