Fuel cell controller

Fuel Cell Controller is a quest item in Fallout 2.

''This chip controls the flow of power into a car's electric engines. Many drivers quickly burnt out this chip through frequent rapid acceleration. Still a valuable part to have -- if you only had a car to install it in.''

It weighs 5 pounds.

You will need this to get the Highwayman at The Den's Junkyard working. You can find it with Skeeter at Gecko's Junkyard. You have to trade a Super tool kit for it. A Super Tool Kit can be obtained from Vault City from a female mechanic with a bad temper in exchange for some tools.