Chrysler 2007 300 - Manual (Page 293)

ADDING FUEL
Fuel Filler Cap (Gas Cap)
The gas cap is located behind the fuel filler door on the
left side of the vehicle. Push in on the left side (near the
edge) of the fuel filler door to access the fuel filler cap. If
the gas cap is lost or damaged, be sure the replacement
cap is for use with this vehicle.
NOTE: When removing the fuel filler cap, lay the cap
tether in the hook, located on the fuel filler cap door
reinforcement.
Fuel Filler Door
Gas Cap Tether Hook
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