Fuel Cut Off Mechanical Blocker Tightened Stopped AIR COOLED OLD CARS

Description Please...Read the entire description Own manufacturing. Cut fuel. Works with Diesel, gasoline or ethanol. Widely used in diesel trucks and vans, old cars. The only one on the market that is completely manual. No air gets into the system. Install it on the floor of your vehicle...and when you press the lock...it blocks the passage...you can only open it with the key... There's no way to blow out the core... because it spins incorrectly... Avoid theft of your vehicle.. Attention: Not suitable for vehicles with electronic injection... Now, if you have an external electric pump (outside the tank) and it is installed at the outlet of the tank to the electric pump... that's fine...