The COBB 18-21 Subaru WRX CAN Flex Fuel Upgrade (Module/Harness/Bracket/Ethanol Sensor) does not have enough exact application evidence to assign safe vehicle YMM. Match manufacturer part number 344650, complete vehicle, engine and transmission configuration, factory equipment, required calibration, emissions eligibility, interfaces, and every product note before ordering.

Key Features

• Continental Ethanol Sensor: OEM-grade sensor measures 0-100% ethanol plus fuel temperature with proven durability.
• No, COBB provides free OTS Flex Fuel maps for immediate use.

Fitment

Specifications

What’s Included

One new COBB product in the exact configuration and quantity identified by manufacturer part number 344650. Calibrations, hardware, hoses, clamps, gaskets, adapters, wiring, fluids, tools, and companion components are included only when expressly stated for this exact part number.

About COBB

COBB develops engine-management, intake, cooling, exhaust, drivetrain, suspension, and vehicle-accessory products for supported performance platforms. Correct selection remains exact-vehicle, exact-configuration, exact-interface, and exact-part-number specific.

Related COBB Products

• Cobb 15-17 Subaru WRX CAN Flex Fuel Upgrade (Module/Harness/Bracket/Ethanol Sensor)
• Cobb NexGen Flex Fuel Ethanol Sensor Kit UPGRADE (Module/Harness ONLY) USES PREV FF ETHANOL SENSR KT
• Cobb 08-21 Subaru STI (Incl. 2018 Type RA) NexGen Flex Fuel Ethanol Sensor Kit

Browse the COBB collection for related tuning, intake, cooling, exhaust, drivetrain, and chassis products.

Frequently Asked Questions

Why is fitment verification required for this COBB product?
Exact vehicle application evidence is not complete enough for safe YMM. Confirm the vehicle, drivetrain, factory equipment, calibration, emissions eligibility, interfaces, and exact part number before ordering.

Are all supporting parts included?
Only components expressly listed for the exact manufacturer part number are included. Tuning, hardware, hoses, clamps, gaskets, adapters, wiring, fluids, and companion components may be separate.

Is tuning or calibration required after installation?
Requirements depend on the exact product and vehicle. Intake, fuel, boost, turbo, and engine-management changes may require a compatible calibration before operation.

Installation Instructions

Follow the current COBB and factory service instructions for this exact part number. Verify fitment, factory equipment, emissions eligibility, required calibration, software and firmware, interfaces, hardware, fluid or electrical connections, and clearances before installation. Inspect the completed work and confirm safe operation before full-load use.