For Pre-A thru 356B T-5 models -- This is the ID plate mounted under the dash; the fuel rod goes through the center. Special screw is included. It's engraved Auf-Zu-Res

Tip: To shut off the fuel, turn the rod to "Z" (for Zu). To turn the fuel on, turn the rod to "A" (for Auf). And, turn to "R" (for for Res.) which means, "Get gas now; you only 1 1/2 gallons left in the tank!"

Note: For 356B T-6 and 356C, a molded rubber grommet is used: 644 201 261 06