Our fuel tanks are high quality direct replacements. They’re typically nickle plated. They don’t need to be painted, but you can paint them if you wish. The fuel sending unit is not included with the gas tank.
Be careful to note if the tank you’re ordering comes with a neck, or not. In cases where the neck IS NOT available with the tank – you’ll need to reuse your old neck. The neck can be soldered into your new tank by a radiator shop.
Considerations for tanks with/without necks are the gas cap. The gas cap often determines how the tank is vented. Vented caps and non-vented caps typically have physically different teeth to prevent the wrong cap being installed on the tank.
Tanks need to be vented. Some vent via a tube manufactured in the tank itself. Some vent through the cap. The venting system depends upon the specific manufacturer and is defined in the service or assembly manual for your specific vehicle.
Generally speaking, 1970 was the debut year for ECS emissions. It was required on cars with California emissions, and became standard on all 1971 model year cars. This captures expanding fuel vapors from the tank in a can (vapor separator in the back of the car) and can pull those vapors up to a charcoal canister up in the engine bay. These trapped vapors are then purged by burning them in the engine.
Prior to 1970 – tanks vented directly to the atmosphere, either vented via the gas tank cap or pipes connected to the fuel tank.
If you have a strong gas vapor odor or have problems with fuel spilling out of the tank you may want to look into your venting system and make sure all hoses and lines are connected as designed.