N18 ◑ Single-source

Chevrolet · Regular Production Option

Auxiliary fuel tank

Years 1967–72 Models 1

Documented applications

C/K Trucks →

• 1967–72 ◑ Single-source

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This page aggregates every documented appearance of N18 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.