1940 Mercury Series O9A Cooling System Parts
Upgrade your 1940 Mercury Series O9A with a direct bolt-in all-aluminum radiator — TIG-welded from aircraft-grade aluminum, with matched fan shrouds and electric fans to complete the system. Every part below is verified to fit the 1940 Mercury Series O9A, so it installs without cutting or fabrication.
Radiators

Champion Cooling Aluminum Radiator 4001FD
$287.00
Designed For Engine Conversion with Ford Motor (Upper Passenger / Lower Driver)(All Engines)

39-41 Ford Deluxe Aluminum Radiator — Champion 4001CH (Chevy V8 Swap)
$287.00
Designed For Engine Conversion with Chevy Motor (Upper Driver / Lower Passenger)(All Engines)

Champion Cooling Aluminum Radiator 4001FH
$287.00
Designed For Engine Conversion with Flathead Motor (Dual Upper / Dual Lower)(All Engines)

39-41 Ford Deluxe Aluminum Radiator — Champion 4001CH (Chevy V8 Swap)
$362.00
Designed For Engine Conversion with Chevy Motor (Upper Driver / Lower Passenger)(All Engines)