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The Edelbrock Marine Series calibration kit for the 1409 carburetor is specified for use on 4.3L, 90‑degree V6 marine applications. Supplied to support proper marine tuning, the kit includes components such as two step‑up springs to help adapt the carburetor’s metering to the unique demands of that 4.3L V6 marine installation.
Edelbrock 4 3L Marine Calibration Kit
