--- product_id: 23493080 title: "30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge" brand: "aem" price: "€ 394.67" currency: EUR in_stock: true reviews_count: 13 category: "Aem" url: https://www.desertcart.gr/products/23493080-30-0300-x-series-wideband-uego-afr-sensor-controller-gauge store_origin: GR region: Greece --- # fastest response time 87% larger display multi-output connectivity 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge **Brand:** aem **Price:** € 394.67 **Availability:** ✅ In Stock ## Summary > 🚀 Tune smarter, drive safer, and never miss a beat with AEM’s X-Series Wideband Gauge! ## Quick Answers - **What is this?** 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge by aem - **How much does it cost?** € 394.67 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/23493080-30-0300-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 - • **Pro-Grade Safety & Power:** Optimize your engine’s air/fuel ratio with real-time data that minimizes dead time and maximizes performance. - • **Massive 87% Larger Display:** See your AFR data in stunning clarity with the new seven-segment center display that dominates your dashboard. - • **Lightning-Fast Response Time:** Experience ultra-quick wideband feedback for precision tuning and safer engine performance. - • **Versatile Multi-Output Ports:** 0-5V, RS232, and CANbus outputs ensure seamless integration with your data logging and control systems. - • **Cutting-Edge X-Digital Technology:** Unlock engine tuning insights others can’t with patented tech that reads and reports unique AFR values. ## Overview The AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge features an 87% larger seven-segment display, patented X-Digital technology for unmatched AFR accuracy, and multiple output options (0-5V, RS232, CANbus) for advanced data logging and control. Its industry-leading fast response time enables precise engine tuning, making it the top choice for professionals seeking optimized performance and safety. ## 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. Review: Aem for the win - No issues, straight forward install. 17 sierra Review: Excellent product - Highly recommend this product, I installed on 95 firebird ## Features - 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, which can deliver more optimized engine tuning and a safer overall operating condition - Faster response time improves wideband feedback control, and can provide a safer, more powerful and accurate tune - When tuning an engine using wideband AFR feedback control on an inertia dyno, dead time affects the data you are looking at because it is reported in a different operating location than when it actually occurred ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0184TSI84 | | Best Sellers Rank | #8,746 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Air & Fuel Ratio Gauges | | Brand | AEM | | Brand Name | AEM | | Customer Reviews | 4.6 out of 5 stars 2,164 Reviews | | Global Trade Identification Number | 00840879024437 | | Included Components | X-Series Wideband UEGO AFR Sensor Controller Gauge | | Item Type Name | AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge | | Item Weight | 0.01 Ounces | | Manufacturer | AEM | | Material | Plastic | | Material Type | Plastic | | Model | 30-0300 | | Number of Items | 1 | | Number of Packs | 1 | | Part Interchange Info | 30-0300 | | Part Number | 30-0300 | | UPC | 840879024437 | | Unit Count | 1.0 Count | | Warranty Description | Warranty | ## Product Details - **Brand:** AEM - **Item Weight:** 0.01 Ounces - **Material:** Plastic - **Number of Items:** 1 - **Unit Count:** 1.0 Count ## 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: Is it compatible with standard hp tuners vcm scanner for data logging?** A: Yes **Q: do I need 30-0310 also or is this complete?** A: No need, the aem 30-0300 is a complete kit. The controller is in the gauge itself. **Q: Does this come with a bosch 4.9 lsu?** A: yes **Q: How do you mount this? Do i have to buy a seperate mounting device?** A: HelloWe usually mount it with this gauge pod Autometer 2204 or same oneIt sells separate https://www.amazon.com/Auto-Meter-2204-Mounting-Cup/dp/B0009RUXPG/ref=sr_1_2?ie=UTF8&qid=1491381219&sr=8-2&keywords=2204 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Aem for the win *by K***Y on May 20, 2026* No issues, straight forward install. 17 sierra ### ⭐⭐⭐⭐⭐ Excellent product *by J***E on June 2, 2026* Highly recommend this product, I installed on 95 firebird ### ⭐⭐⭐⭐⭐ It’s the real deal 👍🏼 *by W***. on November 6, 2025* I’m writing this for people on the fence about whether it is the real AEM gauge/sensor or not. It is, I went to AEM’s website and compared the part numbers and pics and it is exactly the same. I installed it per instructions and warnings and it is working perfectly. It’s a good deal and a great product. ## 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.gr/products/23493080-30-0300-x-series-wideband-uego-afr-sensor-controller-gauge](https://www.desertcart.gr/products/23493080-30-0300-x-series-wideband-uego-afr-sensor-controller-gauge) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-07-15*