Flex Fuel Sensor

Description

Walker Products Flex Fuel Sensor #243-1003 is a Genuine OE sensor, made in the USA and designed to deliver accurate ethanol content readings from 0% to 100%. Outputting a frequency signal from 50 Hz to 150 Hz, this sensor communicates seamlessly with factory and aftermarket systems using OE #13577429 protocols. Engineered with 3/8" quick-connect inlet and outlet fittings, it installs easily in both original equipment and high-performance fuel systems. While ideal as a direct OE replacement on factory flex fuel vehicles, it has also become the industry-standard sensor for high-performance builders converting to E85 or other ethanol blends. Benefits of higher ethanol use include cooler cylinder temperatures, increased octane, reduced engine knock, and improved power potential. Fully compatible with aftermarket ECUs, digital gauges, flex fuel kits, tuners, and mobile apps, this sensor offers unmatched reliability, precision, and versatility. Trust Walker Products to deliver Genuine OE quality for street or track.

Fitment

This part fits the following vehicles.

• 2012-2017 Chevrolet Caprice
• 2013-2015 Chevrolet Captiva Sport
• 2013-2016 Buick LaCrosse
• 2013-2017 Chevrolet Equinox
• 2013-2017 GMC Terrain
• 2013-2018 Chevrolet Impala
• 2013 Buick Regal
• 2013 Cadillac ATS
• 2013 Cadillac SRX
• 2014-2016 Chevrolet Impala Limited
• 2014-2018 Chevrolet Silverado 1500
• 2014-2018 Chevrolet Tahoe
• 2014-2018 GMC Sierra 1500
• 2015-2017 Chevrolet Suburban
• 2015-2017 GMC Yukon
• 2015-2017 GMC Yukon XL

Features & benefits

• 50 Hz–150 Hz signal compatible with OE #13577429 systems and protocols.
• Ideal for OE replacement or high-performance flex fuel conversions using E85.
• Genuine OE sensor—made in the USA for trusted quality and reliability.
• Measures ethanol content from 0% to 100% with fast, accurate frequency output.
• 3/8" quick-connect fittings allow easy integration in factory or custom fuel lines.
• Direct replacement - this flex fuel sensor is designed to match the fit and function of the original sensor on specified vehicles
• Ideal solution - this sensor is a reliable replacement for an original part that has failed due to fatigue or electrical malfunction
• Durable construction - this sensor is made from quality components to ensure reliable performance and a long service life
• Trustworthy quality - backed by team of product experts in the United States and more than a century of automotive experience

Specifications

Warranty

1 Year

Magnuson-Moss Warranty Act

Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)).