AutoMeter Ultra-Lite 52mm Air/Fuel Ratio Pro Plus Digital w/ Peak and Warning Gauge (4397)
SKU: 33490667482

AutoMeter Ultra-Lite 52mm Air/Fuel Ratio Pro Plus Digital w/ Peak and Warning Gauge (4397)

Sale price$187.93 Regular price$208.81
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Description

AutoMeter Ultra-Lite 52mm Air/Fuel Ratio Pro Plus Digital w/ Peak and Warning Gauge (4397)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

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.

Features:

  • 0-5v data and serial data outputs 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 LSU 4.9 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

 

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 33490667482

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4.2 ★★★★★
Based on 486 reviews
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Dean
Grantham, US
★★★★★ 4
Soft
Fit Type: Regular Fit, Color: Navy/Dark Blue, Size: X-Large
They feel nice, but shrunk a little in the wash. The fit before shrinking was perfect, afterwards it was just slightly too tight. The length before and after was too short for my preference. I do have a slightly longer torso though. If you are normal height then they will likely work great for you. The material is super soft and comfortable.
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Reviewed in the United States on March 26, 2026
M
Verified Purchase
Marsha R.
Louisville, US
★★★★★ 5
So soft and attractive
Fit Type: Regular Fit, Color: Heather Grey/Heather Grey, Size: X-Large
Bought these for my husband. He loves the fit and they're so soft and don't wrinkle easily. They're also a nice weight. I've washed them a few times and they don't pill or shrink. Wish they came in a larger variety of colors, but plan on ordering more.
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Reviewed in the United States on May 26, 2026
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Verified Purchase
Nbarr
Charlottesville, US
★★★★★ 5
Shockingly great affordable basic T- Shirts
Fit Type: Regular Fit, Color: Black/Black, Size: 6X-Large Big Tall
I love these shirts! The fact they are big and tall is amazing. Better than Hanes, Fruit of the Loom, and Gildan. I am 6 foot 5 and heavier than I'd like to admit. I also have a wide chest 64 inches(Its hereditary). I need width and length! It is tough to find a shirt that is big and tall. Literally it's one or the other. Amazon of all places solved this. I did get two that weren't right they replaced them swiftly. Also for some strange reason white is a tad bit smaller in the same size. Usually it's the other way around with other manufacturers. I could not find black shirts that fit me comfortably for years! I was convinced it would be impossible to ever find any that would fit. This felt like a long shot and it paid off! Which is rare. I do not dry them in the dryer I know they will shrink(Probably wouldn't hurt to wash cold). If you want to dry them and you can I would go size up. Not too thin or too heavy wouldn't consider it an undershirt.
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Reviewed in the United States on February 28, 2026
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Anonymous
Bozeman, US
★★★★★ 5
New default shirt
Fit Type: Regular Fit, Color: Navy/Navy, Size: Small
Amazon has again proved that it did good research about what makes a good basic garment. I've been wearing these for a few weeks now and honestly I forgot about them because they just fit and are not annoying and don't look bad. They are good. Also the cotton seems high quality and is soft. Also the small fit as expected.
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Reviewed in the United States on March 11, 2026
S
Verified Purchase
Stephen Pontello
Dallas, US
★★★★★ 3
Good quality cloth, but shrinks
Fit Type: Regular Fit, Color: Black/Black, Size: X-Large
Nice fabric. But it shrinks after the first wash
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Reviewed in the United States on April 19, 2026

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