Reproduction Carter 4491S style smog canister valve. 390-4V / 427-4V/ 428CJ in 1968. Fits 428 Cobra Jet and 428 Super Cobra Jet for 1969-70. Brand new, body is stamped as shown, and dated. The remaining valve has a couple of small dents on the cover. Font is smaller than factory, decent replica of the 4491S Carter valve.
Brand new and functional Carter manufactured valve.