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Autometer GS 52mm AFR or LAMBDA Digital Wideband Air/Fuel Ratio PRO Wideband A/F Kit

SKU: ATM3878

Gauges

AM GS Gauges...

Autometer GS 52mm AFR or LAMBDA Digital Wideband Air/Fuel Ratio PRO Wideband A/F Kit

SKU: ATM3878

Gauges

AM GS Gauges...

A$830.80
LAST ONE! READY TO SHIP! In stock at 2 locations (7 available)

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Description

Autometer GS 52mm AFR or LAMBDA Digital Wideband Air/Fuel Ratio PRO Wideband A/F Kit

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.

Part Type

Air / Fuel Ratio Gauge

Data: v4.2 - Upd: 2026-11-09 02:42:27

Features

  • 0-4v data output feed for ECU, data acquisition unit, or Laptop tuning
  • 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
  • Display data in Lambda or numerical A/F ratio
  • 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
  • Peak recall/memory
  • User programmable range for Rich/Stoic/Lean conditions
  • User Programmable Warning Function

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Downloads

# Document Type Download
1. Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-07 16:42:23

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Autometer, Autometer Products
StreetFX SKU atm3878
SFX Item ID 4078727
Accounting SKU atm-3878
Manufacturer SKU 3878
Manufacturer UPC 46074038785
Alternative References 3878, ATM-3878, AUT3878

Gauge, GS, Air/Fuel Ratio, 0-5 V Wideband, Lean/Rich, 2 1/16 in., Digital, Electrical, Each

These GS Series wideband air/fuel ratio gauges from AutoMeter include a high-quality Bosch wideband O2 sensor. They feature an LED digital display, an auto-dimming gauge brightness feature, and a 0-4v data output feed for ECU, data acquisition unit, or laptop tuning. These user-programmable gauges allow you to display data in a Lambda or numerical A/F ratio, peak recall/memory, and a 10:1 to 20:1 AFR range for gasoline applications. They are adjustable for alternate fuel types.

Product Attributes
BrandAutoMeter
Manufacturer's Part Number3878
Part TypeGauges
Product LineAutoMeter GS Series Wideband Air/Fuel Ratio Gauges
UPC046074038785
Gauge TypeAir/Fuel ratio - Wideband
OEM ReplacementNo
Gauge StyleDigital
Sending UnitElectrical
Gauge Diameter (in.)2 1/16 in.
Gauge Diameter (mm)52mm
Gauge RangeLean-rich
Gauge ShapeRound
SweepDigital numeric
Gauge Face ColorBlack
Gauge Number ColorMulticolor
Bezel ColorChrome
IlluminatedYes
Memory RecallNo
PlaybackNo
Liquid-FilledNo
Shift Light IncludedNo
TripometerNo
Sending Unit IncludedYes
RemanufacturedNo
QuantitySold individually.
NotesIncludes wide band oxygen sensor. This gauge displays both a bar graph and digital numbers. Air fuel ratio can be programmed for gasoline and alternate fuels (ethanol, methanol, propane, and CNG) from 6:1 to 20:1 depending on fuel type.

Manufacturer Attributes
Title 2-1/16 in. WIDEBAND PRO AIR/FUEL RATIO, 6:1-20:1 AFR, GS
Manufacturer Designation GAUGE, AIR/FUEL RATIO-PRO, 2 1/16", 10:1-20:1, DIGITAL W/ PEAK & WARN, GS
Product Class Air / Fuel Ratio Gauge
Construction/Type 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
Product Outline 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
Vehicle Brief 2-1/16" WIDEBAND A/F, W/SENSOR, FSE, GS
Market 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 Isnt A More Accurate Or Easy To Live With Wideband Gauge Available On The Market.

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