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              US Gallon : 17 Liter : 64 Size : 39 1/4 x 24 1/2 x 7 3/4 Includes Fuel Sender Locking Ring And Seal With side filler, without vent pipes What is EEC? EEC is an acronym for Evaporation Emission Control. It usually appears as a second and third vent port at the front of the gas tank. These ports act as a return line from the charcoal canister, fuel pump and vapor separator. EEC usually appeared on vehicles produced for sale in California and other emissions control states.
| Make | Model | Years | 
| Chevrolet | El Camino | 1970 - 1972 | 
| GMC | Sprint | 1971 - 1972 |