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4378
2-1/16" WIDEBAND PRO AIR/FUEL RATIO, 6:1-20:1 AFR, ULTRA-LITE
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Quick Specs
- Size:2-1/16" (52.4mm)
- Type:Digital
- Range:6:1-20:1 AFR
- Lighting:Digital LED
- Instructions: Download PDF
DESCRIPTION:
Knowing the exact air/fuel mixture running through your engine is the most important factor to extracting the highest levels of performance and durability. Not all wideband gauges are created equal. AutoMeter utilizes an advanced calibration method that automatically calibrates your gauge on every startup to assure you of the highest degree of accuracy over the entire lifespan of your sensor (no free air calibration is ever necessary). Compatible with nearly all fuel types, the AutoMeter Pro Wideband has a configurable display to pinpoint the exact range you want to keep an eye on. An advanced peak recall function and lean warning system make sure you’re safely making power, whether on the track or on the street. An automatically dimming display tailors light output for any condition. Data logging output is included for one wire or two wire systems in both lambda or AFR. Our specially designed O2 sensor and wiring harness are included for ease of installation. Quite simply, there isn’t a more accurate or easy to live with wideband gauge available on the market.
Feature Points
Cancer, Birth Defects and Reproductive Harm www.P65Warnings.ca.gov
- Gauge kit includes custom tuned .1 AFR Resolution Bosch LSU4.2 Sensor, 8ft. wiring harness, 304 stainless steel weld-in bung, mounting hardware, and detailed instructions for installation
- 0-4v data output feed for ECU, data acquisition unit, or Laptop tuning
- User programmable range for Rich/Stoic/Lean conditions
- Peak recall/memory
- 10:1 to 20:1 AFR range for gasoline applications
- 12 and 16 volt compatible, compatible with nearly every street car or race car electrical system
- User Programmable Warning Function
- Display data in Lambda or numerical A/F ratio
- Includes Sending Unit: 2243
- M18X1.5 Fitting and Plug
- Wire Harness: 5232
- 2230
Cancer, Birth Defects and Reproductive Harm www.P65Warnings.ca.gov
REVIEWS:
QUESTIONS:
is this gauge compatable with the holley hp computer and if so how do i wire it into thier harness. thank you rich sr.
The 4378 features a 0-4v data output feed for ECU, data acquisition unit, or Laptop tuning. Out Pro Plus model 4397 features a 0-5V data output.
Date published: 2021-12-30
what is the part number for the replacement sensor? I have the 4378
Thank you for contacting us. 2243 is the replacement O2 sensor for the 4378.
Date published: 2021-09-01
The number display on my gauge has lost some of the lights so i can't read any more is there a fix for that ?
Thank you for your question. The unit would need to come in for evaluation: https://www.autometer.com/media/Service_Form.pdf
Date published: 2021-07-27
Do you have a Wideband Air/Fuel 2-1/16 (digital readout) gauge that will match the ANTIQUE BEIGE - QUAD & TACH/SPEEDO gauges
Thank you for your question. At this time, we do not, but when our new Custom Shop website launches later this year, it will be possibly to create an analog Wideband in Antique Beige. Unfortunately, there will be no options for a digital version to match Antique Beige.
Date published: 2021-07-20
Does this work with other fuel like e85
Thank you for your question. You can use this with Gasoline, Methanol, Ethanol, LPG, CNG, and Nitrous.
Date published: 2023-06-28
Do you need to buy a program for your laptop
Thank you for your inquiry. All normal functions of then 4378 are controlled by the push buttons on the dial face. No connection to al laptop is needed. The gauge does have an analog output, which can send information to a data acquisition device.
Date published: 2019-12-02
Just want to confirm this comes with the lsu4.2 sensor or lsu4.9? If it is 4.2 can it be changed to 4.9?
Thank you for the question. This unit comes with the 4.2 sensor and is only compatible with that 4.2 sensor. It cannot be used with a 4.9 sensor. If you want a gauge with the 4.9 sensor, I would recommend our Pro Plus models, such as #4397: https://www.autometer.com/2-1-16-wideband-pro-plus-w-sensor-sport-comp-6047.html
Date published: 2019-11-05
Is this comparable with 16 volt battery system
Thank you for your question. Yes, this will work on both 12v and 16v systems.
Date published: 2023-08-10
