Carter manufactured valve with C8TE-9B289-B and 4490-S imprinted on the valves' cover. Another hard to find part with correct date codes specific to Boss 302. Ford part number C8TZ-9B289-A. These units are used, not tested and one should assume they are non-functional. These units are used, not tested and one should assume they are non-functional.
*Note, we try to carry later manufactured 'Service replacement' Carter anti backfire valves which are in every way the same, but without the cast and date stamped cover, but more economy priced. Please see item number C8TE-B-SR.