THIS IS AN NOS GM CHOKE COIL THERMOSTAT COVER USED ON 1964-70 CHEVROLETS WITH 283 307 327 ENGINES WITH 2 BBL CARBURETORS. GM PART NUMBER IS 3840906. GM PARTS BOOK SHOWS THAT IT FITS 64-70 CHEVROLET, CHEVELLE AND CAMAROS USING THE 2 BBL CARBURETOR. ALSO USED ON SOME 69 PICKUP TRUCKS WITH 8 CYL AND 1970 PICKUP AND BLAZER WITH 307 ENGINE. CHECK YOUR APPLICATION FOR PROPER FIT BEFORE BIDDING.