AEM X-Series Wideband UEGO AFR Gauge Kit
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
Tune with real data using the AEM X-Series Wideband UEGO AFR Gauge Kit (PN 30-0300). Built on AEM’s patented X-Digital technology (Patent 9,575,030), the X-Series controllers were the fastest responding wideband air/fuel ratio controllers in independent testing*, giving you faster feedback for a safer, more powerful and accurate tune.
Why Choose the AEM X-Series Wideband AFR Gauge?
- Fastest in independent testing – X-Series Wideband UEGO AFR Controller Gauges were the fastest responding wideband air/fuel ratio controllers in an independent test vs. 17 competitor wideband AFR controllers.
- X-Digital technology – High-speed digital implementation means no loss of signal fidelity and full transient response, catching the slightest AFR fluctuations.
- Less deadtime – Faster response reduces the delay between an exhaust gas change and the sensor reporting it, so fueling changes land in the right timeframe.
- Tougher sensor – Co-developed with global automotive supplier FAE for a faster response time and less prone to failure in high performance vehicles.
- Runs on almost any fuel – EFI or carbureted, on gasoline (including leaded race gas), methanol, ethanol, diesel, propane and CNG.
- Fits almost anywhere – 52mm mount with a slim depth of less than one inch overall.
- Bigger display – Center display 87% larger than the 30-4110 AEM Wideband Gauge’s center display.
Kit Includes
- X-Series Wideband AFR Gauge (PN AEM 30-0300)
- Black bezel and black double-sided faceplate
Specifications
- Gauge diameter: 2 1/16th-inch (52mm)
- Gauge depth: 0.825" (gauge cup depth only .200" deep)
- Supply voltage: compatible up to 16V
- Outputs: 0-5V & RS232 for data logging and feedback control; AEMnet (CANbus) for data logging and daisy-chaining multiple controllers up to 16 cylinders
- Sensor: Auto-Sensor Detection between AEM FAE and Bosch LSU 4.9 wideband sensors
- Display: AFR, Lambda or O2%, 3- or 4-digit, auto-dimming
Key Features at a Glance
- X-Digital – Patented, fastest-responding wideband control
- Factory calibrated – Calibrated resistor does not require free-air calibration, but can be free-air calibrated
- User-configurable – Buttons on the gauge face switch AFR, Lambda or O2%, set 3 or 4 digits, run free-air calibration and change the CAN message ID
- Multi-controller ready – AEMnet daisy-chaining up to 16 cylinders
- Auto-dimming – Display adjusts automatically
Notes
- Silver bezel/white faceplate option sold separately, PN 30-0300-ACC.
- *Independent testing vs. 17 competitor wideband AFR controllers.
SKU: 30-0300
Questions? We’re Here to Help.
Have questions about upgrades for your build? Contact FASS Motorsports and we’ll get you dialed:
Phone: 636-429-7020
Email: info@fassmotorsports.com
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