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AEM Wideband Gauge X-series 30-0300 AFR O2 UEGO Air Fuel Ratio gauge Kit 2 1/16"

AUTHORIZED DEALER - Full Warranty - SUPERFAST SHIPPING®
US $199.95
No Interest if paid in full in 6 mo on $149+ with PayPal Credit*
Condition:
New
More than 10 available4,624 sold

Additional service available

People want this. 2643 people are watching this.
This one's trending. 4624 have already sold.
Shipping:
Free 2-4 day delivery
Get it between Thu, May 15 and Sat, May 17 to 43230.
Located in: Baton Rouge, Louisiana, United States
Returns:
60 days returns. Seller pays for return shipping.
Payments:
       Diners Club
*No Interest if paid in full in 6 months on $149+. See terms and apply now- for PayPal Credit, opens in a new window or tab
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eBay item number:361657509780
Last updated on May 12, 2025 19:19:31 PDTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Other Part Number
300300 / AEM 30-0300
Other name
wideband
Items Included
Wiring Harness, Mounting Hardware
Item Diameter
2-1/16
Color
Black
Manufacturer Part Number
30-0300
Material
Plastic
Superseded Part Number
30-4100
Vintage Part
No
Unit of Measure
Air Fuel Ratio
Brand
AEM
Needle Color
LED Multi Color
Type
Digital Air Fuel Ratio
Interchange Part Number
30-0300, 30-4110, AEM Wideband, Wideband, 30-4100, Wideband Gauge, AEM 30-0300
Authorized Dealer
Yes
Display Type
Digital
Manufacturer Warranty
1 Year
OE/OEM Part Number
30-0300
Style
Racing
Features
Display Gasoline values from 8.0:1 to 20.0:1 AFR, Wideband Air Fuel Ratio Display
Universal Fitment
Yes
Performance Part
Yes
UPC
840879024437

Item description from the seller

About this seller

lightningmotorsports

98.9% positive feedback103K items sold

Joined Apr 2004
Welcome to our eBay Store. Founded in 1996, we have been servicing the performance industry for well over 25+ years. Our knowledgeable staff can assist you with any project from mild mannered daily ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

Seller feedback (35,455)

All ratings
Positive
Neutral
Negative
  • o***0 (1281)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    I love the new design and features! I mounted it next to the tach with no mounting cup needed, just made a simple mounting bracket.
  • r***a (320)- Feedback left by buyer.
    Past year
    Verified purchase
    You need this if your serious about performance. My laptop with software was hypothetically at a good afr at WOT..My car felt great.. After installing this in my 1994 Z28 A4 car I test drove amd saw I was off a full point lean at WOT. I made the corrections needed in my VE table and you can only imagine the difference in power. IF YOU ARE OBD1 LT1 FBODY YOU NEED THIS SENSOR! EASY INSTALL ! Just remove cigarette lighter and grind the whole big enough to clear the 2 plugs and stud mounts!!!
  • y***6 (5)- Feedback left by buyer.
    Past month
    Verified purchase
    Very good quality, and factory sealed as described. For me looks original AEM gauge
See all feedback

Product ratings and reviews

4.9
238 product ratings
  • 222 users rated this 5 out of 5 stars
  • 11 users rated this 4 out of 5 stars
  • 2 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 3 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • Top favorable review

    Accurate and easy to read

    I have used both 30 & 60 psi range gauges and I will never be using any other brands boost gauges. Easy to read, even in off road applications. Comes with all needed hardware for installation.

    Verified purchase: YesCondition: NewSold by: autoshopping24.store

  • AEM 30-0300

    One of AEM's newest most recent wideband for 2018... This gauge is also on social media as 1 of top ten to choose, and I believe 2nd or 3rd in the order... I chose this for the quality of this being the first single board design and jst hobby style harnesses to plug and play to the guage... The setup is also great bc it is also a lambda and uego read on the LSU aswell... This means e85 compatible... The no obstacles that were of AEM guages of yesterday are in the past bc this opens doors for more of these guages to be standard so the harness is plug and play the guage is single board, has digital dim and blackout feature.. So many things that make this a can't go wrong choice, other than being pricey in the market; which was only thing was and I waited for a great price.. This is AEM's ...

    Verified purchase: YesCondition: NewSold by: circuitspecr

  • Peace of mind at a Glance!

    This is one of the best gauges for monitoring A/F because of the big red easy to read from a glance numbers as well as the parameter light that will definitely let you keep your eye on the road / track ahead and still catch a glimpse of the green light without actually looking directly at it. It's just in your line of site so you know your A/F is fine

    Verified purchase: YesCondition: NewSold by: spreetail

  • Awesome product

    Works great, makes logging your car with a db9 cable very easy. Worth every penny.

    Verified purchase: YesCondition: NewSold by: circuitspecr

  • Yeah boi

    I read and followed the directions for the oxygen sensor install angle and fixed any exhaust leaks. it works great and can finally fine tune my carburetor.. I found out why one of my many carbs always got horrible mileage even with very lean jetting, the idle air bleeds were about .012" too small

    Verified purchase: YesCondition: NewSold by: tsukikagesoul811

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