--- product_id: 50068512 title: "30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge" brand: "aem" price: "฿27178" currency: THB in_stock: true reviews_count: 2 category: "Aem" url: https://www.desertcart.co.th/products/50068512-30-0300-x-series-wideband-uego-afr-sensor-controller-gauge store_origin: TH region: Thailand --- # fastest response time 87% larger display multi-output data logging 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge **Brand:** aem **Price:** ฿27178 **Availability:** ✅ In Stock ## Summary > ⚙️ Tune like a pro, see like a visionary. ## Quick Answers - **What is this?** 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge by aem - **How much does it cost?** ฿27178 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/50068512-30-0300-x-series-wideband-uego-afr-sensor-controller-gauge) ## Best For - aem enthusiasts ## Why This Product - Trusted aem brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Slim & Stylish Design:** Ultra-thin profile fits virtually anywhere, with customizable faceplates to match your cockpit vibe. - • **Massive 87% Larger Display:** See your AFR data with unprecedented clarity on a sleek 52mm gauge face. - • **Lightning-Fast X-Digital Tech:** Experience the quickest wideband response for safer, more precise tuning. - • **Pro-Level Calibration & Control:** User-configurable AFR modes, free-air calibration, and CAN ID settings put you in command. - • **Versatile Multi-Output Connectivity:** 0-5V, RS232, and CANbus outputs for seamless integration and data logging. ## Overview The AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge is a race-only, precision air/fuel ratio monitor featuring an 87% larger seven-segment display, ultra-fast X-Digital sensor technology, and multiple output options (0-5V, RS232, CANbus) for advanced data logging and tuning control. Its slim 52mm design with customizable faceplates and auto-dimming ensures both style and functionality for serious motorsport enthusiasts. ## Description Product Description AEM’s X-Series Wideband UEGO Air/Fuel Ratio Sensor Controller Gauges are built upon unique, patent-pending X-Digital technology that makes them the fastest responding wideband air/fuel ratio controllers in independent testing against 17 other wideband UEGO air/fuel controllers. The X-Series Wideband UEGO AFR Sensor Controller Gauge (PN 30-0300) measures 2 1/16th-inch (52mm) in diameter, and features a modern, visually striking faceplate and new seven-segment center display that is 87% larger than the 30-4110 AEM Wideband Gauge’s center display. This creates the perception of a larger overall gauge, but in a common 52mm size for easy mounting. Its slim depth (less than one inch overall) and ultra slim cup depth of .200-inches dramatically increases its application base and potential mounting locations. The X-Series Wideband UEGO AFR Gauge has a user configurable display via buttons on the gauge face that allow you to change AFR values for different fuels, Lambda or O2%, change the center display to three or four digits, perform a free-air calibration if desired as the sensor ages, and change the CAN message ID when linking multiple X-Series Inline Controllers or X-Series Controller Gauges. A black bezel and black dual-faced faceplate for air/fuel and Lambda are included, and an optional silver bezel with white dual-faced air/fuel and Lambda faceplate is available (PN 30-0300-ACC, sold separately). An Auto Dimming feature is included. Locking connectors ensure a positive connection between the harnesses and gauge and a new single board design adds to the new gauge’s durability. Legal Disclaimer WARNING: Cancer and reproductive Harm www.P65Warnings.ca.gov Review: Seller didn't advertise this item properly - Some of the digits were not working properly. Review: Beware - Fake item - The gauge came in a rather scruffy but genuine looking AEM box. However the gauge and sensor included were not genuine - The gauge was not even marked as AEM, and the sensor was not a Bosch unit. Have requested refund. ## Features - This is a "race use only" product. No warranty for the Lambda Sensor. Return of the sensor is not accepted - The X-Series Wideband UEGO AFR Sensor Controller Gauge (PN 30-0300) features a modern, visually striking faceplate and new seven-segment center display that is 87% larger than the 30-4110 AEM - The gauge includes a 0-5v and RS232 Serial Port output for feedback control and data logging, and an AEMnet (CANbus) output for data logging - X-Digital wideband technology gives these controllers the ability to read and report values that other controllers do not. Display Gasoline values from 8.0:1 to 20.0:1 AFR - Faster response time improves wideband feedback control, and can provide a safer, more powerful and accurate tune ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0184TSI84 | | Best Sellers Rank | 180,982 in Automotive ( See Top 100 in Automotive ) 13 in Car Electrical Air & Fuel Ratio | | Brand | AEM | | Customer Reviews | 4.6 out of 5 stars 2,051 Reviews | | Global Trade Identification Number | 00840879024437 | | Included Components | X-Series Wideband UEGO AFR Sensor Controller Gauge | | Item Type Name | Gauges | | Item Weight | 0.01 Ounces | | Item weight | 0.01 Ounces | | Manufacturer | Advanced Engine Management | | Material | Plastic | | Thread type | Digital | | UPC | 840879024437 | | Unit Count | 1.0 count | ## Product Details - **Brand:** AEM - **Item weight:** 0.01 Ounces - **Material:** Plastic - **Thread type:** Digital - **UPC:** 840879024437 ## Images ![30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge - Image 1](https://m.media-amazon.com/images/I/61NZ-5-mnOL.jpg) ## Questions & Answers **Q: Dose this item come with the collar to weld to the exhaust?** A: Yes, this comes with the weld on boss **Q: Is the weld-on boss mild or stainless steel?** A: It is mild steel. You can find stainless steel bung if you want on our store. It is sold separately. **Q: I want this just to raad my a/f just when i am using nitrous. will this work for that so as i spray nitrous & fuel if to leen or rich on the hit i can** A: Yes, it will do what you need. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Seller didn't advertise this item properly *by R***U on 9 October 2025* Some of the digits were not working properly. ### ⭐ Beware - Fake item *by C***R on 29 April 2023* The gauge came in a rather scruffy but genuine looking AEM box. However the gauge and sensor included were not genuine - The gauge was not even marked as AEM, and the sensor was not a Bosch unit. Have requested refund. ## Frequently Bought Together - AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge - HP Tuners PROLINK+ Cable with Analog and CAN Bus inputs for External Sensors Using MPVI2+ and MPVI3 OBD2 Scan Tools, Cable Only - GlowShift Universal Black Single Gauge Swivel Dashboard Pod - Fits Any Make/Model - Swivels 360 Degrees - ABS Plastic - Mounts (1) 2-1/16" (52mm) Gauge to Vehicle's Dash --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/50068512-30-0300-x-series-wideband-uego-afr-sensor-controller-gauge](https://www.desertcart.co.th/products/50068512-30-0300-x-series-wideband-uego-afr-sensor-controller-gauge) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-25*