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AEM X-Series Wideband UEGO AFR Sensor Controller Gauge with OBDII Connectivity

X-SERIES WIDEBAND UEGO CONTROLLER FEATURES:

  • The Fastest Responding Wideband AFR Controller
  • OBDII pass through provides AFR readings through the factory ECU CAN-bus – Ideal for users with piggyback programmers or open source tuning software!
  • Includes Bosch 4.9LSU wideband UEGO sensor
  • Use the factory 02 calibration or free-air calibrate using buttons on faceplate
  • Compatible with vehicle/system voltages up to 16V
  • Optional outputs for 0-5V & RS232 for data logging and feedback control (requires wiring)
  • Can display AFR values in hundredths of %
  • 52mm gauge diameter and slim 0.825” gauge depth
  • Gauge cup depth only .200” deep!
  • Auto dimming feature
  • User configurable display via buttons on the gauge face for changing AFR values, Lambda and O2%, 3- or 4-digit display and OBDII output settings (if necessary)
  • Black bezel and black dual faced faceplate included (silver bezel/white gauge option sold separately, PN 30-0300-ACC)
  • Locking connectors

Minnesota Buyers - Please Note: A sales tax of 7.125% will be applied to your order.

Important Note for International Buyers

All automotive products sold are for use in the United States (USDM) market only. We cannot guarantee fitment for overseas and international vehicles. Please research prior to purchase to ensure compatibility as we will not be responsible for shipping refunds on orders with these issues.

Return Policy

All return requests must be made within fourteen (30) days of the delivery date with documentation related to said purchase as requested. Returns or refunds are only available for products that are returned in the same condition they were sent, brand new and sealed. Returns will NOT be accepted for opened items. Please contact customer support for any questions or concerns.

International Buyers - Please Note

Import duties, taxes, and fees aren't included in the item's price or shipping costs. The buyer is responsible for paying for any import fees. Check with your country's customs office to find out what these additional charges will be before you bid or buy.

We utilize USPS, FedEx and UPS for outbound international shipments. If you have a preference in regards to which shipping company we utilize to fulfill your order please make note of it with your payment or in a follow up email. For example, Canadian customers generally prefer USPS as we have heard that FedEx charges additional brokerage fees. On the other hand, many customers from the United Kingdom prefer FedEx as there are no additional fees and they receive their packages significantly faster than those shipped via USPS. Please feel free to contact us for additional information.

Free Shipping Disclaimer

For listings with free shipping, it only applies within the continental 48 states. Shipments to Alaska, Hawaii, Puerto Rico or any of the U.S. territories may incur an additional shipping charge. Outbound shipping charges are non-refundable and will be deducted from returns. Please contact us for additional information prior to placing your order.

For listings with free overnight shipping, it only applies within the continental 48 states. Shipments to Alaska, Hawaii, Puerto Rico or any of the U.S. territories will be shipped via Fedex Express Saver or USPS Express Mail service and may take up to three business days for delivery.


Please see the item description for information regarding shipping costs and available shipping methods. All packages are shipped with insurance and a signature requirement unless otherwise requested. Please don't hesitate to contact us if you would like to request a specific shipping carrier or specify another service as we will do our best to fulfill such requests.

We are a factory authorized warehouse distributor for these product lines and many more.
Purchase from MAP to receive aggressive pricing and retain your manufacturer's warranty!