Fuel-It! Bluetooth Flex Fuel Kit
Fits 2015-2020 3.5L EcoBoost
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Price tracked 7 times since Jul 12, 2026: low $419.95, high $419.95, currently $419.95.
where to buy · 3 retailers tracked
A Bluetooth-enabled ethanol content sensor kit that reads the fuel's ethanol percentage for a supporting ECU or tune, letting the truck run E85 blends safely.
why this one — Fuel-It says install takes about 30 minutes, and the job is rated on the easy side, at $419.95. It supports an E85 tune rather than replacing one, and ethanol use can affect warranty, so check that first.
Fuel system hardware is not itself an emissions-control component, but running on E85/high-ethanol blends requires supporting tune changes - verify local fuel regulations and powertrain warranty impact before installing.
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