Replace your cracked or missing fan shroud with this OER replacements fan shroud. Will mount correctly to any original GM radiator. reproduction radiators will usually accept this fan shroud if the replacement includes the original style brackets for mounting. Aftermarket reproduction radiators may not include the correct fan shroud mounting brackets which will make it difficult to install your new fan shroud. Be sure to check your radiator and determine if the fan shroud mounting brackets are correct for your installation. Applications 1970-74 Pontiac Firebirds 6 cyl. or V8, 1975-77 Pontiac Firebirds 301, 350P, 400 or 455, 1978-79 Firebirds with 301 or 400, 1980-81 Firebirds with 4.3, 4.9T or 301