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In-Store Pickup Location

Innovate MTX-L Digital Air/Fuel Ratio Gauge Kits 3918

Innovate Motorsports 3918 - Innovate MTX-L Digital Air/Fuel Ratio Gauge Kits

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Gauge, MTX Series, Air/Fuel Ratio, 2 1/16 in. Diameter, Yellow Digits, Digital, Electrical, 8 ft. Cable, Kit

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  • Order this item and get free delivery and handling on your entire order! Offer excludes truck freight and oversize fees. Valid on orders shipped in the contiguous United States.

Brand: Innovate Motorsports

Manufacturer's Part Number: 3918

Part Type: Gauges, Digital

Product Line: Innovate MTX-L Digital Air/Fuel Ratio Gauge Kits

Summit Racing Part Number: INN-3918

UPC: 856428039180

Gauge Style: Innovate MTX

Gauge Series: Digital

Gauge Type: Air/Fuel ratio

Shape: Round

Gauge Size (in): 2 1/16 in. diameter

Gauge Size (mm): 52.39mm diameter

Sending Unit: Electrical

Gauge Number Color: Yellow

OEM Replacement: No

Sending Unit Included: Yes

Quantity: Sold as a kit.

Notes: Includes white face, black face, silver bezel, and black bezel to customize the look of the gauge. Comes with 8 ft. sensor cable.

In-Store Pickup: Choose In-store pick-up (OH, NV, GA, TX) on our web site.

It's the evolution of the world's most popular standalone digital oxygen sensor controller! Innovate MTX-L digital air/fuel ratio gauge kits build upon the legacy of the XD-16 by adding simplicity and leading-edge industrial science. They utilize 100 percent digital wideband air/fuel ratio technology; while patented, award-winning DirectDigital signal processing provides data on exactly how rich or lean an engine is running at any load. The self-calibrating circuitry also compensates for changes in temperature, altitude, and sensor condition. Innovate MTX-L digital air/fuel ratio gauge kits feature a digital input/output, two full-programmable analog outputs—and they're ideal for applications such as dynamometers, data acquisition systems, standalone ECUs, and gauges.


Questions & Answers Ask a Product Question

Since this is P/N3918 does it come with the LSU 4.9 Bosch Sensor? I am worried because it doesn't say "MTX-L Plus." Thus the name doesn't match the part number on Innovate's website.

Asked by LEVON on June 15, 2019



The Innovate 3918 comes with the LSU 4.9 sensor.

Innovate Motorsports Innovate Motorsports Answer - June 17, 2019

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Is this unit stand alone?

Asked by RANDY on August 29, 2018


Thanks for your question. INN-3918 includes all necessary components to be installed and function standalone as a Wideband Air/Fuel Ratio (Lambda) gauge. This product also features additional outputs to support data transmission to other Innovate MTS enabled products, 3rd party devices such as ECUs, and supports logging with a laptop PC equipped with our Logworks software. You can find a copy of the gauge product manual here: If you have further questions about this product as it may apply to your application, please contact your Summit sales rep or call our tech team at 800-348-3037 and we would be happy to help make sure you have the right parts to complete your project.

Innovate Motorsports Innovate Motorsports Answer - August 29, 2018

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Does this kit come with a bung to weld in?

Asked by GARRETT on February 08, 2019


Thanks for your question. As a member of the community has correctly indicated, INN-3918 does include a mild steel weld fitting, INN-3839, as part of the assembly. Additional weld fittings for alternative metals and specialty installations are available for purchase separately. Please contact your Summit sales rep for additional assistance if you believe that your application may require something instead of, or in addition to the standard equipment for this part.

Innovate Motorsports Innovate Motorsports Answer - February 11, 2019

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Leaded fuel? Yes. No.

Asked by LEN on October 21, 2017


Thank you for your question. The Innovate Motorsports 3918 air/fuel ratio gauge is compatible with leaded fuel. However, this will greatly shorten the life of the sensor.

Summit RacingSummit Racing Answer - November 01, 2017

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Some parts are not legal for use in California or other states with similar laws / regulations

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