This is the correct gasket and heat plate for the Rochester Quadrajet carburetor. The stainless steel heat plate goes against the base of the carburetor. The gasket goes between the plate and the intake manifold.
1953-1966 Buick 264,322,400,401,425 Timing Chain & Water Pump SS Hardware
1962-1966 Buick Nailhead Water Pump with Gasket. 400, 401, 425. OEM 1396758
62 63 64 65 66 Buick Nailhead Water Pump with timing cover gaskets 400 401 425 P
1957-1966 Buick Nailhead 364 401 425 V8 Engine Intake Manifold Gaskets Seal Set
364 401 425 Buick Nailhead Carburetor Gasket & Heat Plate Baffle 57 - 66 Carter
Buick Nailhead 364 401 425 Intake Manifold Gasket 57 58 59 60 61 62 63 64 65 66