Collection: Flex Fuel & Flex Fuel Kits
Know your exact ethanol content in real-time via the Fuel-It! or JB4 app on your smartphone or tablet.
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Audi S3 Bluetooth Flex Fuel Kit for the 2021+ 8Y
Retail Price $479.95 USDRetail PriceUnit price / per -
AUDI S4 Bluetooth Flex Fuel Kit for the B8 & B8.5
Retail Price From $149.95 USDRetail PriceUnit price / per -
AUDI TT RS/RS3 Bluetooth Flex Fuel Kit for the 2.5L motor
Retail Price From $34.95 USDRetail PriceUnit price / per -
AUDI TTRS Bluetooth Flex Fuel Kit for the 2.5L Gen 2 (MK2 8P)
Retail Price $349.95 USDRetail PriceUnit price / per -
BMW 120i, 220i, 320i, and 420i Bluetooth Flex Fuel Kit for the F-chassis N20 AND N26 motors
Retail Price $369.95 USDRetail PriceUnit price / per -
BMW 135i & 335i Bluetooth Flex Fuel Kits for the E-Chassis N54 and N55 Motors
Retail Price From $199.95 USDRetail PriceUnit price / per -
BMW 135i, 235i, 335i, 435i, & 535i Bluetooth Flex Fuel Kits for the F-Chassis N55
Retail Price From $499.95 USDRetail PriceUnit price / per -
BMW 230i, 330i, & 430i Bluetooth/CANflex Flex Fuel Kits for the G-Chassis B46/B48
Retail Price From $199.95 USDRetail PriceUnit price / per -
BMW 535i & Z4 Bluetooth Flex Fuel Kits for the E-Chassis N54 & N55 Motors
Retail Price From $485.95 USDRetail PriceUnit price / per -
BMW F-Chassis 550i, 650i, & 750i Bluetooth Flex Fuel Kit for the N63 and N63TU
Retail Price From $179.95 USDRetail PriceUnit price / per -
BMW 740i Bluetooth Flex Fuel Kit for the B58TU2 Motors
Retail Price From $199.95 USDRetail PriceUnit price / per -
BMW E-Chassis 535i and Z4 Fuel Line and Ethanol Sensor Upgrades
Retail Price From $99.95 USDRetail PriceUnit price / per -
BMW F-Chassis Bluetooth Flex Fuel Kit for the B38, B46, B48, B58 Motors
Retail Price From $199.95 USDRetail PriceUnit price / per -
BMW F-Chassis Rear Mount CANbus Flex Fuel & Low Fuel Pressure Sensor Kit for the N20, N55, S55, & B58 Gen1
Retail Price $429.00 USDRetail PriceUnit price / per$499.00 USDSale price $429.00 USDSale -
BMW G-Chassis M550i, 750i, & M850i Bluetooth Flex Fuel Kit for the N63TU3
Retail Price From $199.95 USDRetail PriceUnit price / per -
BMW Hi-Flow CANbus Flex Fuel Kit for the S58 M2, M3, M4, X3M, and X4M
Retail Price From $199.95 USDRetail PriceUnit price / per -
BMW M2, M3 & M4 Bluetooth Flex Fuel Kit for the G8X S58
Retail Price From $199.00 USDRetail PriceUnit price / per -
BMW M2, M3, and M4 Bluetooth Flex Fuel Kits for the F-chassis S55
Retail Price From $499.95 USDRetail PriceUnit price / per -
BMW M240i, M340i, M440i, & M540i Bluetooth/CANflex Flex Fuel Kits for the G-Chassis B58
Retail Price From $199.95 USDRetail PriceUnit price / per -
BMW M5, M6 & M8 Bluetooth Flex Fuel Kit for the F1X and F9X with S63TU motor
Retail Price From $179.95 USDRetail PriceUnit price / per -
BMW X3 & X4 Bluetooth Flex Fuel Kit for F & G Chassis
Retail Price From $199.95 USDRetail PriceUnit price / per -
BMW X3M & X4M Bluetooth Flex Fuel Kit for the F9X S58
Retail Price From $199.95 USDRetail PriceUnit price / per -
BMW X5 40i Bluetooth Flex Fuel Kit for the G-chassis B58 (G05)
Retail Price $479.95 USDRetail PriceUnit price / per -
BMW Bluetooth Flex Fuel Kit for S68 motors
Retail Price $479.00 USDRetail PriceUnit price / per