Digital Wideband UEGO Gauge - AEM

DESCRIPTION:

The AEM 30-4100 Digital Wideband UEGO Gauge delivers industry-leading air/fuel ratio accuracy in a sleek, easy-to-read digital display. Designed for high-performance street, race, and forced induction applications, this 52mm wideband gauge provides real-time AFR data to help you safely tune and monitor your engine for maximum power and reliability.

Featuring AEM’s proven Bosch LSU 4.9 wideband sensor and advanced UEGO controller technology, the 30-4100 ensures fast response times and dependable readings across a wide AFR range. The bright LED display and sweeping needle-style LEDs make it easy to monitor AFR at a glance, even under aggressive driving conditions.

Ideal for turbocharged, supercharged, naturally aspirated, and nitrous applications, the AEM 30-4100 wideband gauge is a must-have tool for anyone serious about engine performance and protection.

Key Features

52mm digital wideband AFR gauge
Bosch LSU 4.9 wideband O₂ sensor included
No free-air calibration required
Digital LED readout with sweeping LED needle
AFR range: 10.0:1 to 20.0:1 (Gasoline scale)
0–5V analog output for ECU/data logger integration
Serial output for use with external devices
Accurate AFR data for forced induction and high-performance builds
Black bezel with black faceplate for clean interior integration
Includes sensor bung and installation hardware

Warranty

AEM Performance Electronics Limited Warranty AEM Performance Electronics (“AEM Electronics”) warrants to the original consumer that all AEM Electronics Products will be free from defects in material and workmanship under normal and proper use for a period of 90 days from the date of the original purchase. For purposes of illustration, but not limitation, the following are not defects in material or workmanship: (a) normal wear and tear and/or required maintenance; (b) improper handling, storage, installation, lubrication or maintenance; (c) damage resulting from or related to misuse (including use in a way other than those applications recommended by AEM), abuse, unauthorized modification or alteration, incorrect polarity (+&- wires crossed), accident, acts of God, or external causes; and (d) cosmetic damage (nicks, bruising, discoloration). EXCEPT WHERE PROHIBITED BY LAW, THIS WARRANTY IS EXCLUSIVE AND THE ONLY WARRANTY APPLICABLE TO THE PRODUCT. IT IS OFFERED EXPRESSLY IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ALL OF WHICH ARE DISCLAIMED. Limited Remedies: If a Product fails because of a defect in material and/or workmanship within this limited warranty period, AEM will repair or replace the Product at no cost to the customer. This warranty is limited to the repair or replacement of the AEM Electronics Product. In the event of a defect, to the extent permitted by law, these are the customer's sole and exclusive remedies. Incidental and Consequential Damage Disclaimer: EXCEPT WHERE PROHIBITED BY LAW, AEM ELECTRONICS DISCLAIMS AND UNDER NO CIRCUMSTANCES SHALL BE LIABLE FOR SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR LOSSES RESULTING FROM THE USE, MISUSE, OR INABILITY TO USE THE PRODUCT AS WELL AS ANY BREACHES OF THIS WARRANTY OR ANY IMPLIED WARRANTY REGARDLESS OF THE CAUSE AND EVEN IF THE CLAIMED DAMAGES OR LOSSES WERE CAUSED BY A WARRANTABLE DEFECT. This warranty applies only to the original purchaser of the Product and is non-transferable, except as prohibited by applicable law. In no event shall this warranty exceed the original purchase price of the AEM Electronics Product. Warranty returns will only be accepted by AEM Electronics when accompanied by a valid Return Merchandise Authorization (RMA) number and a dated proof of purchase. Please note that before AEM Electronics can issue an RMA for any Product, it is first necessary for the installer or end-user to contact our technical support team to discuss the problem. Most issues can be resolved over the phone. Under no circumstances should a Product be returned, or an RMA requested before our support team is contacted. This will ensure that if an RMA is needed that our team is able to track your Product through the warranty process. PRODUCTS OUTSIDE OF WARRANTY PERIOD Most AEM Electronics Products, excluding discontinued products, can be replaced (at a discounted rate) following documentation of the faulted item being field destroyed. A valid Return Merchandise Authorization (RMA) number must be issued by the Support Team before a transaction for Product replacement can occur.