Genuine AEM XSeries Wideband Air Fuel Ratio Sensor Controller Gauge

X-Series Wideband UEGO AFR Controller Gauge were fastest responding wideband air/fuel ratio controllers in an independent test vs. 17 competitor wideband AFR controllers
Includes AEM/FAE wideband UEGO sensor
Factory calibrated resistor does not require free-air calibration, but technology allows for free-air calibration as sensor ages if user desires
Compatible with vehicle/system voltages up to 16V
0-5V & RS232 output for data logging and feedback control, AEMnet (CANbus) for data logging and daisy-chaining multiple controllers up to 16 cylinders
Can display AFR values in hundredths of %
52mm gauge diameter and slim 0.825” gauge depth
Gauge cup depth only .200” deep

OUR GUARANTEE:

Every Quantum fuel pump is backed by a comprehensive Lifetime Warranty. You will not find a stronger warranty from any other performance fuel pump manufacturer, period. If a Quantum product fails due to a defect in workmanship or materials simply contact us and we will replace it. Unlike poorly manufactured pumps sold by other eBay sellers, Quantum fuel pumps maintain strict ISO 9002 and ISO/TS 16949 quality system standards, and are flow tested by RC Engineering.

FAST SHIPPING!

We make fast shipping our PRIORITY. Any order received by 2:30PM PST on a business day will be shipped the SAME DAY. Any order received on a holiday or weekend will be shipped the next business day. Most orders will be received in 2 business days anywhere in the United States using the free USPS Priority Mail shipping option. Rural areas will take 3 business days. The optional FedEx 2-day shipping method will guarantee delivery in 2 days anywhere in the country. There is also a FedEx Guaranteed Overnight option, which will deliver the package by 3pm your time the following business day.

CUSTOMER SERVICE:

Our Customer Service team is responsive, knowledgeable, and genuinely helpful. They’re not just here to take messages; they’re trained problem-solvers with technical expertise who know our products inside and out. Whether it’s tracking down the right fuel pump for an obscure fitment or helping a customer troubleshoot an install, they handle every question with clarity and patience. Available by phone, email, and eBay messaging Monday through Friday from 7:00 am to 3:30 pm PST, they consistently earn 5-star reviews for a reason: Quick replies, zero runaround, and real solutions.

RETURNS:

At Quantum Fuel Systems, we value your satisfaction and want to ensure a smooth return process. You have a 30-day window to initiate a return from the date of purchase. To begin a return, please visit your order detail page from your eBay account and initiate the return process and follow the steps.

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We are proud members of the Specialty Equipment Manufacturer's Association (SEMA)

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