Search  for anything...
AEM

AEM (30-4110) UEGO Air/Fuel Ratio Gauge

    • Based on 2,530 reviews
Condition: New
Checking for product changes
$184.95 Why this price?

Buy Now, Pay Later

As low as $30.83 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: 12 left in stock
Fulfilled by Amazon
Arrives Tuesday, Dec 24
Order within 20 hours and 49 minutes
Available payment plans shown during checkout

Features

  • Interchangeable black and white faceplates included for customizing gauge appearance.Material:Plastic
  • Bosch 4.9 LSU wideband sensor and weld-in bung included PN 30-4110
  • No free air sensor calibration required ever. A 2-1/16 inch gauge housing ensures that it will fit in most gauge pods and can be remotely mounted virtually anywhere
  • Interchangeable black and silver bezels included. 52mm (2-1/16) gauge housing
  • 0-5V analog output 10-20 AFR range only

Description

Our World-famous Wideband O2 air/fuel ratio UEGO gauge features a digital LED display and sweeping LED 'needle' that changes colors as AFR changes from rich to lean. A 52mm (2-1/16") gauge housing ensures that it will fit in most gauge pods and can be remotely mounted virtually anywhere. All AEM digital gauges feature a 0-5V analog output for use with data loggers and almost any engine management system. Each gauge comes with black and silver bezels and black and white faceplates for multiple color combinations and a custom look (a black Lambda faceplate and black and white Air/Fuel Ratio faceplates). The Bosch UEGO sensor gives the controller its speed and accuracy. The Bosch 4.9 LSU sensor used in the AEM Wideband UEGO AFR Controller Gauge has a faster light off time and draws less current than the 4.2 LSU sensor used with AEM's 30-4100 Wideband UEGO Controller Gauge, which will be superseded to the gauge in August, 2014. The 4.9 LSU sensor features the same fuel compatibility as the 4.2 LSU and NEVER requires free-air calibration when used with AEM's Wideband UEGO AFR Gauge. The 4.9 LSU sensor uses a different connector than the connector used with the 4.2 LSU sensors included with the original 30-4100 gauge controller. The sensors are not interchangeable between the two gauge controllers in any way, including changing connectors on the gauges. The Wideband O2 air/fuel ratio UEGO gauge is a must if you want to maximize your engine's power and safety. When tuning an engine, accurate air/fuel ratio data is critical because running with too rich of an AFR can cause a loss of power, and running a lean AFR can result in serious engine damage. AEM's digital Wideband AFR UEGO gauge can quickly alert you to even a .1 change in air/fuel ratio and provide enough time to shut down an engine before damage occurs. There are two harnesses that connect to the back of the AEM UEGO gauge. The longer harness connects to the UEGO sensor. The shorter harness contains four leads.

Brand: AEM


Material: Plastic


Item dimensions L x W x H: 2.17 x 2.76 x 2.17 inches


Item Weight: 400 Grams


UPC:


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 2.17 x 2.76 x 2.17 inches; 14.11 ounces


Item model number ‏ : ‎ 30-4110


Department ‏ : ‎ Unisex-Adult


Date First Available ‏ : ‎ August 21, 2014


Manufacturer ‏ : ‎ AEM


Country of Origin ‏ : ‎ USA


Best Sellers Rank: #133,220 in Automotive (See Top 100 in Automotive) #2 in Automotive Performance Gauge Sets #78 in Automotive Gauge Sets


#2 in Automotive Performance Gauge Sets:


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Dec 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Thought I had a bad O2 sensor but...
Style: Custom
So I bought this UEGO AFR gauge to allow me to monitor my Air/Fuel ratio in my EVO X because I upgraded my fuel system. After installation, which was pretty easy thanks to YouTube videos, my AFR gauge would start off at 14.7 (which is normal) but then max out and go to ***. I checked only line about what this issue was and a lot of things I found was that people would receive bad O2 sensors with their kits and I was afraid that is what happened to me. But after testing and checking my MAP sensor I found that my MAP sensor was bad and that if was causing my car to run super lean. After replacing the MAP sensor the AFR gauge started working properly which made me very happy. All-in-all, the installation process was easy, the kit came with two different color choices (black or silver), and helping identify a problem that my ECU wasn't reporting made this purchase one of the best decisions I have made lately. I would purchase again if need be. ... show more
Reviewed in the United States on January 5, 2024 by Jwhit
    • Great affordable A/F gauge.
Style: Custom
Before I bought this gauge, I tried to save some money by purchasing a cheap eBay APSX wideband. That was a mistake, the wiring was cheap, the connector was junk, it didn't work right off the start, and was broken after a week. This gauge is phenomenal. The wiring is all thicker gauge (I think 18?) which was bigger than the cheap one I got. The sweeping LEDs work great and look very smooth while driving. The LED numbers are very easy to read and show up nicely under any lighting conditions. The ONLY complaint I have is that when you are off the throttle and the A/F ratio is 19 or so, it just reads "--" and I wish it would say 19. It's not an issue of any kind and it doesn't do it any other time than when you see coasting off the throttle. Overall this is a great gauge and I would absolutely reccomenend spending the extra 30$ to but this instead of the cheap eBay one. ... show more
Reviewed in the United States on September 2, 2015 by Brandon Tchida
    • You'll get maybe 6 months but probably not.
Style: Custom
It works and it preforms very well, it's very responsive to sudden changes. A lot of the instillation and preformance depends on the vehicle but the power wiring pigtail could be another foot longer and the sensor lead itself is plenty long for my installation. You will need to know basic wiring and have a second bung welded into your exhaust in the correct spot. The "P4" setting is terrible, do not buy it for this purpose. It's not emulated well at all actually just makes my miata (1994 1.8L) run deathly lean, almost like the stock ecu isn't reading the signal correctly (wiring was verified through factory wiring diagrams). I ended up buying a new narrowband and welding in the provided bung after already cutting into the wiring. The setting switch is deeply recessed into the device and the retention tab actually blocks access to it. The two wiring pigtail connections and placed too close and the cutout for them is not big enough, they both just barely fit in and you have to wiggle with it a little to even get both to get into place. It works as it is but it's not ideal. After a few months and one return/replacement later because of a faulty bosch sensor and some weird troubleshooting, it's had no issues since and I've placed about 2500 miles on it with quick readings, and no sun glare even with the top down and shining on it. Update 12/10: I have since moved to standalone and don’t need the narrowband emulation feature anymore. Unfortunately after 4000 miles the sensor again has died and reads full lean, it also fails the brake clean test miserably with no response even when soaked. Will be contacting seller for a potential replacement sensor. ... show more
Reviewed in the United States on April 1, 2023 by Mr_MagicMan
    • AEM (30-4110) UEGO Air/Fuel Ratio Gauge ...
Style: Custom
Looks like it is built pretty decent, though the case is a very cheap plastic and would of preferred metal but seems everything is plastic nowadays. I installed it and the sensor screwed right into my existing bung. The threads are precoated with I think is anti-seize. The sensor cable is plenty long enough for my application and I probably will end up with a glove box full of rolled up cable. Once I get it running, I will try to update my review here. UPDATE: After installing the gauge and sensor, I am impressed with the product. It worked and works very well. It does have quite the light show when you first start the car as it boots itself up. The gauge does not start working until the sensor has completely warmed up which is a very short time. I really like the duel display mode with the digital display and the sweeping dial display. This item could be used for a tool if you own more then one vehicle. The only requirement would be to have holes drilled in exhaust pipe with the correct size bung in each for install and removal during test. ... show more
Reviewed in the United States on August 15, 2015 by Raceline Central
    • Awesome Product at a great price. Be Careful with overheating sensor!!!!!!
Style: Custom
As always it was delivered in true Amazon fashion, nearly before I ordered it. The gauge response time is almost non-existent, it's so fast. In fact if I have any complaint, it is the LED needle is way too responsive, it needs to be dampened a little so it is more apt to display an average, but with a short decay time. Other than that I am 100% pleased and look forward to using it when I add the turbo. Thanks again Amazon, and of course AEM for their superior, yet affordable products. <:/) UPDATE: 9 months and MAYBE 5000 miles after purchase the O2 sensor died a horrible death. When I looked into replacement under Warranty, I discovered it comes with NO Warranty whatsoever!!!! Amazon does not even offer their "insurance" for this product, which they attempt to shove down your throat on every other imaginable product. AEM wants $105 for replacement. but if you buy it listed as Bosch model # 17025 P/N 02580170254UG you will receive a Ver. 4.9 sensor with correct plug and laser trimmed resistor calibration. I found it for $67 @ Amazon. I machined a heat sink to press onto my new sensor, as well as a finned isolator ported to pump the exhaust gasses using both high pressure and low pressure passages to ensure accurate sniffing. ... show more
Reviewed in the United States on July 2, 2017 by WelLRoundeDSquarE

Can't find a product?

Find it on Amazon first, then paste the link below.