COBB Tuning 315670 Ethanol Sensor Kit - Front View
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Cobb NexGen Flex Fuel Ethanol Sensor Kit UPGRADE (Module/Harness ONLY) USES PREV FF ETHANOL SENSR KT

COBB
COBB315670
731946517573
Flex Fuel Kit
17 Units In Stock - Ships Next Business Day
$ 540.00
$ 540.00

COBB NexGen Flex Fuel Ethanol Sensor Kit Upgrade - 315670

The COBB NexGen Flex Fuel Ethanol Sensor Kit Upgrade, part 315670, is a module and harness upgrade for the 2008-2021 Subaru STI that requires a previously installed COBB flex fuel ethanol sensor kit.

Key Features

  • Upgrades an existing COBB flex fuel ethanol sensor installation to the NexGen module
  • Module and harness only reuses the previously installed ethanol sensor
  • Enables real-time ethanol content monitoring for flex-fuel tuning
  • Works alongside a COBB Accessport for live ethanol content data
  • Part 315670 is an upgrade kit, not a standalone first-time installation
  • Supports E85, gasoline, and blended fuel operation
  • Kit 315670 ships with an updated wiring harness for a clean install

Fitment

Year Make Model Submodel
2008-2021 Subaru STI NexGen Flex Fuel Upgrade Module/Harness Only

Specifications

Detail Value
COBB Part Number 315670
Kit Contents Module and harness only
Prerequisite Requires a previously installed COBB flex fuel ethanol sensor kit
Fitment 2008-2021 Subaru STI

What's Included

  • COBB NexGen Flex Fuel module
  • Wiring harness

About COBB Tuning

COBB Tuning has engineered performance electronics, intakes, exhausts and suspension components for turbocharged platforms since 2003, building its Accessport ECU flashing device alongside record-tested bolt-on hardware for Subaru, Ford, Honda, Toyota and more.

FAQ

Do I need an existing flex fuel kit for this?

Yes, this upgrade requires a previously installed COBB flex fuel ethanol sensor kit.

What does this kit include?

It includes the NexGen module and wiring harness only, not a new ethanol sensor.

What vehicles does this fit?

It fits the 2008-2021 Subaru STI.

Does this work with an Accessport?

Yes, it provides live ethanol content data viewable on a COBB Accessport.

Is this a first-time flex fuel installation kit?

No, it is an upgrade for an existing flex fuel sensor setup.

Was this in stock at time of research?

It was listed as out of stock at the time of research. Check current availability before ordering.

Is a warranty included?

Yes, it is covered by COBB's Component Limited Warranty against manufacturing defects.

Do I need to reconnect the battery after installation?

Yes, reconnect the battery only after all wiring connections are secure.

Installation Instructions

  1. Confirm a COBB flex fuel ethanol sensor kit is already installed on your 2008-2021 STI
  2. Disconnect the battery before beginning any wiring work
  3. Remove the previous-generation flex fuel module from its mounting location
  4. Connect the new COBB 315670 NexGen harness to the existing ethanol sensor wiring
  5. Mount the NexGen module in the same or a similarly protected location
  6. Reconnect the battery and verify live ethanol content readings on your Accessport

Request For Information

Have questions about Cobb NexGen Flex Fuel Ethanol Sensor Kit UPGRADE (Module/Harness ONLY) USES PREV FF ETHANOL SENSR KT? Fill out the form below and we'll get back to you by the next business day.
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