Features:

  • Interchangeable black and white faceplates included for customizing gauge appearance
  • 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
  • 0-5V analog output 10-20 AFR range only
Exactly what i needed!!!

I have been looking for a AEM wideband AFR gauge for a while now and i finally saw this on Amazon for an awesome price. They usually go for more than $200. This gauge works perfectly and is an authentic AEM gauge. It comes with 2 gauge face colors, black n white, and it includes all wiring needed for installation and easy to follow directions.

Great wideband, great gauge, easy install

Entirely outstanding in terms of price and performance. This much value for 150 dollars is amazing compared to what you got for your money 15-20 years ago. Back then you paid more and didn't even get a gauge let alone a good one with an easy install. The gauge is easy to read, responds quickly and looks pretty. It doesn't flicker or anything so I don't know why people complain about distracting flashing lights. The brightness seems just right for every situation so far and you don't notice it unless you glance over to the windshield pillar- maybe it's annoying with gauge cluster mounting or with internal LED lighting or something. Dunno. Everyone's car is different. But I had no problems in my NA miata, even in bright sunlight with the top down. Installation was straightforward and easy except for the firewall routing. If you have an easy passage through your firewall and 12v/GRND/signal wires already set aside, this is under a 5 minute install. I had the thing up and running in about 2 minutes... then 2 hours later I had it installed in my dashboard. The extra two hours was entirely devoted to firewall/dashboard cable routing. Getting the rectangular cable connectors fed through the firewall was annoying but that's the worst of it. With practice I could probably get it down to 15-20 minutes. The gauge feels a bit fliimsy compared to autometer (which feel like they're made from metal or something), but you won't ever touch it once installed, so this is a minor quibble.

Awesome Product at a great price. Be Careful with overheating sensor!!!!!!

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.

Simple installation and works great. Very easy to read digital and range LED ...

Simple installation and works great. Very easy to read digital and range LED graphics. I am using it to tune and monitor an older twin carbureted engine. It is sensitive enough to quickly read ratio fluctuations so it does jump around under normal driving, but I prefer it like it is to get a feel for how the carbs transition under acceleration etc. I am very pleased overall.

All of them are working great! Installation is very easy

What can I say, AEM is AEM :) I bought this one for my friend. Previously bought 2 of them, one for me, other one for my other friend. Mine is installed on Toyota Mark II IR-V. Second one is installed on friend's V7 STI, and this particular item is already installed on EVO 3. All of them are working great! Installation is very easy, and package contains everything needed for the installation.

Happy with it.

Packaged very well, great instructions that aren't broken English lol. Installed easy. It came with a sensor bung (I already had an empty sensor bung in my exhaust), PLENTY of wire harness for the sensor and more than enough for the gauge. Several gauge face options as well. Hooked it up and works well so far

As always AEM has come through with another amazing product. The new bosch LSU 4

As always AEM has come through with another amazing product. The new bosch LSU 4.9 sensors are blazing fast and have better accuracy as well. This is a great gauge and I highly recommend them to everyone and anyone who needs a wideband. Great company hands down the best wideband on the market in my opinion.

This has worked great on my race car for several weekends

This has worked great on my race car for several weekends. Love the fact that it does not need to be calibrated in clean air like some others. I have 2 Innovate Motorsports Wideband gauges on other cars and they seem to constantly need to be re calibrated and to do that on them you have to remove the O2 Sensor and that can take 20 minutes. The next one I buy will be a AEM.

Absolutely necessary for boosted cars

AEM is a well known company in the car world, and makes high quality products. I purchased this gauge to monitor my AFR and log for open source tuning purposes. Installation was painless and took roughly 20 minutes since my downpipe already had a bellmouth o2 bung. I strongly recommended that you buy an add-a-circuit fuse kit (ASIN B01LFXA5UA) if you don't have any, it will make installation much easier so that the gauge can be powered by one of your car's powered circuits, like the radio. I had a few spares laying around, so I spliced this gauge and a boost gauge to one fuse kit without any problems. The kit also comes with several butt splices although one would suffice. The cables for the gauge are extremely long, so be aware that you must have adequate room to tuck them away. I paired this gauge with an AEM boost gauge (ASIN B001DX7KMY) and SMY Dual Gauge Cluster (ASIN B01M7MEKUS). The numbers are also very readable in the day time and stand out in the night, although the sweeping color band is a bit washed out during the day but still visible. No issues with this gauge and I'm very pleased! The AEM sticker that came in the box was a bit damaged, so I only gained +4 HP instead of the expected +5 HP.

AEM takes the cake

Exactly as described. New style Bosch o2 sensor seems to be a bit more accurate. Also has a light exposure "eye" that adjusts the display brightness so its not blinding at night or dim in the sun. AEM has always treated me right.

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