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AutoMeter 4397 Ultra-Lite AFR Gauge,2-1/16,6:1-20:1,Flat

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#1824397

AutoMeter 4397 Ultra-Lite AFR Gauge,2-1/16,6:1-20:1,Flat

Gauge kit includes custom tuned .1 AFR Resolution Bosch LSU 4.9 Sensor, 8ft. wiring harness, 304 stainless steel weld-in bung, mounting hardware, and detailed instructions for installation
0-5v data and serial data outputs for ECU, data acquisition unit, or Laptop tuning
User programmable range for Rich/Stoic/Lean conditions

$395.99

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Product Summary

Universal Fit, 2.25" Overall Diameter, Silver

Gauge kit includes custom tuned .1 AFR Resolution Bosch LSU 4.9 Sensor, 8ft. wiring harness, 304 stainless steel weld-in bung, mounting hardware, and detailed instructions for installation
0-5v data and serial data outputs 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

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Key Specs

MFG. Part #	4397
Brand	AutoMeter

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AutoMeter 4397 Details

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. Auto Meter 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 Auto Meter 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.

Gauge kit includes custom tuned .1 AFR Resolution Bosch LSU 4.9 Sensor, 8ft. wiring harness, 304 stainless steel weld-in bung, mounting hardware, and detailed instructions for installation
0-5v data and serial data outputs 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

Ships with the following AutoMeter products:

Mounting Hardware: 2230

Ships with the following AutoMeter products:

Mounting Hardware: 2230

Charts

Installation Instructions (PDF)

Rebates

AutoMeter Hod Holidays Up To $150 MIR Select Parts

Purchase $100 or more in eligible AutoMeter products between November 1 and December 31, 2026 and receive a mail-in rebate ranging from $10 to $150, depending on your total qualifying purchase amount. Eligible brands include AutoMeter, Auto Gage, Dedenbear, Marine, Pro-Cycle, Spek-Pro, STACK, and AutoMeter Test Equipment products. To qualify, submit a completed rebate form, your original sales receipt or invoice, and the original UPC/barcode labels cut from each product box. All rebate requests must be postmarked by January 31, 2027. One rebate per household per rebate period; offer cannot be combined with other promotions and is valid only on new qualifying purchases. Incomplete, late, illegible, or non-compliant submissions will be rejected. Rebate requests are subject to verification and approval by AutoMeter Products, Inc., valid for U.S. customers only, and may take up to 12 weeks to process.

Guides & Documents

Air/Fuel Ratio Gauges Installation Instructions (1824397)

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

AutoMeter 4397 Specifications

KEY SPECS
MFG. Part #	4397
Brand	AutoMeter

GENERAL
Overall Diameter	2.25"
Gauge Type	Digital
Gauge Range	6:1-20:1 AFR
Gauge Face Color	Silver
Bezel Finish	Brushed Aluminum
Lighting Type	Digital LED
GTIN Code	046074043970
Lens Style	Flat
Bezel Style	Super Bezel
Body Diameter	2.06"

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