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Wideband UEGO AFR Controller X-Series AEM

Product number: 30-0300

Manufacturer: AEM Performance Electronic

Broadband lambda display

Extremely fast response time
Factory calibrated resistor
0-5 volt output for feedback
RS232 output for data logging

US$273.51

US$306.68*

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Description Description

Description

AEM wideband lambda display of the X-Series

This digital lambda display has a splash-proof 52mm housing and a depth of only 21mm. The coveted indicator comes with a complete mounting parts, such as wiring harness, FAE 4.9LSU wideband probe and weld-on thread.

With the AEM lambda indicator, you can always see whether your engine is running properly. Indispensable for tuned engines.

Switchable display of AFR, lambda, O2 % and fuel type via push-button.
X-Digital technology
Auto Dimming
Extremely fast response time
Factory-calibrated resistance, no free-air calibration required
If required, e. g. recalibration is possible if the sensor ages
0-5 volt output for feedback
RS232 output for data logging
AEMnet (CANbus) output for data logging
Black outer ring
Cable length: approx. 3.50m
Cable length power cable: approx. 1.50m
Cable length lambda probe: approx. 50cm

An additional fuse is required to correctly protect the display from overvoltage. See below as accesories available. (fuse holder)

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Questions & Answers

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This product is guaranteed to fit because it is universal in any vehicle!

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Display reviews in current language only.

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5 reviews

8 June 2026 10:35

no comment

no comment

17 November 2025 18:08

Funktioniert nicht

Funktioniert aus der Box raus nicht, Anzeige verkabelt, Lambdasonde angeschlossen, Anzeige zeigt sens an. Ich schätze die Lambda sonde ist kaputt angekommen, weil die Anzeige sens normal anzeigt, wenn kein Sensor angeschlossen ist. Habe Bar Tek eine Email geschrieben, bis jetzt keine Antwort. Hoffe auf diesem Weg eine zu bekommen. Habe mich nämlich auf die Anzeige gefreut, und brauche sie zum abstimmen.

10 June 2025 14:22

no comment

no comment

12 December 2023 07:20

Nein alles zu meiner vollsten Zufriedenh

Nein alles zu meiner vollsten Zufriedenheit ♥️

19 March 2020 00:00

Bewertung ohne Text

Bewertung ohne Text

Accessories Accessories

Accessories

universal

AEM X-Series Wideband UEGO AFR Display Accessory Kit

AEM Performance Electronics

AEM X-Series Wideband UEGO AFR Display Accessory Kit

Immediate delivery!

Guaranteed to fit in your car!

Display panels printed on both sides

US$17.76

Broadband lambda display BAR-TEK®

3 Years Warranty

3 Years Warranty

Wideband AFR & Lambda display controller BAR-TEK®

Immediate delivery!

Guaranteed to fit in your car!

4.9 LSU broadband probe

52 mm housing in carbon look

Made in Germany

% US$229.06 US$206.15

Recommendations

GSPR GSPR

Manufacturer

Information about the manufacturer

AEM

AEM electronics

2445 Nashville Road, Suite B1, Bowling Green, KY 42101, United States

[email protected]

EU responsible person

BAR-TEK Motorsport GmbH

Im Rauschen Auel 3, 51491 Overath-Brombach, Germany

[email protected]

Description

AEM wideband lambda display of the X-Series

This digital lambda display has a splash-proof 52mm housing and a depth of only 21mm. The coveted indicator comes with a complete mounting parts, such as wiring harness, FAE 4.9LSU wideband probe and weld-on thread.

With the AEM lambda indicator, you can always see whether your engine is running properly. Indispensable for tuned engines.

Switchable display of AFR, lambda, O2 % and fuel type via push-button.
X-Digital technology
Auto Dimming
Extremely fast response time
Factory-calibrated resistance, no free-air calibration required
If required, e. g. recalibration is possible if the sensor ages
0-5 volt output for feedback
RS232 output for data logging
AEMnet (CANbus) output for data logging
Black outer ring
Cable length: approx. 3.50m
Cable length power cable: approx. 1.50m
Cable length lambda probe: approx. 50cm

An additional fuse is required to correctly protect the display from overvoltage. See below as accesories available. (fuse holder)

Do you have questions about the product? Just start the chat, we will help you with your product selection.

Questions & Answers

Questions & Answers

Fits for

This product is guaranteed to fit because it is universal in any vehicle!

Questions about the product

Do you have a question about the product? Our experts will be happy to help you

Downloads

Matching the product

Reviews

Login

Enter email address...

Enter password...

No account yet? Register now in 3 minutes

My advantages:

Fast shopping
Save your user data and settings
Insight into your orders incl. shipment information
Manage your garage and cars

Display reviews in current language only.

Sort by

5 reviews

8 June 2026 10:35

no comment

no comment

17 November 2025 18:08

Funktioniert nicht

Funktioniert aus der Box raus nicht, Anzeige verkabelt, Lambdasonde angeschlossen, Anzeige zeigt sens an. Ich schätze die Lambda sonde ist kaputt angekommen, weil die Anzeige sens normal anzeigt, wenn kein Sensor angeschlossen ist. Habe Bar Tek eine Email geschrieben, bis jetzt keine Antwort. Hoffe auf diesem Weg eine zu bekommen. Habe mich nämlich auf die Anzeige gefreut, und brauche sie zum abstimmen.

10 June 2025 14:22

no comment

no comment

12 December 2023 07:20

Nein alles zu meiner vollsten Zufriedenh

Nein alles zu meiner vollsten Zufriedenheit ♥️

19 March 2020 00:00

Bewertung ohne Text

Bewertung ohne Text

Accessories

universal

AEM X-Series Wideband UEGO AFR Display Accessory Kit

AEM Performance Electronics

AEM X-Series Wideband UEGO AFR Display Accessory Kit

Immediate delivery!

Guaranteed to fit in your car!

Display panels printed on both sides

US$17.76

Broadband lambda display BAR-TEK®

3 Years Warranty

3 Years Warranty

Wideband AFR & Lambda display controller BAR-TEK®

Immediate delivery!

Guaranteed to fit in your car!

4.9 LSU broadband probe

52 mm housing in carbon look

Made in Germany

% US$229.06 US$206.15

Manufacturer

Information about the manufacturer

AEM

AEM electronics

2445 Nashville Road, Suite B1, Bowling Green, KY 42101, United States

[email protected]

EU responsible person

BAR-TEK Motorsport GmbH

Im Rauschen Auel 3, 51491 Overath-Brombach, Germany

[email protected]

bacca252875345c293a7744669f244ab Wideband UEGO AFR Controller X-Series AEM https://www.bar-tek.com/wideband-uego-afr-controller-x-series-aem https://www.bar-tek.com/media/46/16/94/1652866855/aem_breitbandlambda_schwarz80cb8.jpg?ts=1669206232 InStock 273.51 USD 30-0300 bacca252875345c293a7744669f244ab 1 1 https://www.bar-tek.com/media/cb/9f/dd/1711096110/logo-aem.svg?ts=1711096218 30-0300 840879024437 true true /Brands /Brands/AEM Performance Electronics /Shop /Shop/Specials % /Shop/Specials %/Sales % /Shop/Accessories /Shop/Accessories/Gauges & Pods /brands/aem-performance-electronic /products/sales /brands /products /specials /products/accessories/gauges-pods /products/accessories 018d8e93c64c76c68f1a557de682a9ed 18415f87ea1d4d208b8be53b0758bf39 7ba1eb3b29ad4e5e8823fade26c3db38 8cdc2eabbd08462badf21298702c943a a1f86f0088c34e2583b589a5875bbede cb95cee79e0a46e996dedabeb3ddafea e15d575a61f04da0a763a70396276d6d eb27df81065f4f6fa3fc825e4a49bdd6 cb95cee79e0a46e996dedabeb3ddafea 7ba1eb3b29ad4e5e8823fade26c3db38 8cdc2eabbd08462badf21298702c943a a1f86f0088c34e2583b589a5875bbede eb27df81065f4f6fa3fc825e4a49bdd6 AEM Performance Electronic <p>AEM wideband lambda display of the X-Series</p> <p>This digital lambda display has a splash-proof 52mm housing and a depth of only 21mm. The coveted indicator comes with a complete mounting parts, such as wiring harness, FAE 4.9LSU wideband probe and weld-on thread.</p> <p>With the AEM lambda indicator, you can always see whether your engine is running properly. Indispensable for tuned engines.</p> <ul> <li>Switchable display of AFR, lambda, O2 % and fuel type via push-button.</li> <li>X-Digital technology</li> <li>Auto Dimming</li> <li>Extremely fast response time</li> <li>Factory-calibrated resistance, no free-air calibration required</li> <li>If required, e. g. recalibration is possible if the sensor ages</li> <li>0-5 volt output for feedback</li> <li>RS232 output for data logging</li> <li>AEMnet (CANbus) output for data logging</li> <li>Black outer ring</li><li>Cable length: approx. 3.50m</li><li> Cable length power cable: approx. 1.50m</li><li>Cable length lambda probe: approx. 50cm</li> </ul> <p>An additional fuse is required to correctly protect the display from overvoltage. See below as accesories available. (fuse holder)</p> 306.68 4.6 5 https://www.bar-tek.com/media/5a/a1/18/1652867192/aem_breitbandlambda_seitef9ab9.jpg?ts=1669206232 https://www.bar-tek.com/media/a5/98/cb/1652867230/aem_breitbandlambda_hintenc7d0c.webp?ts=1763117360 https://www.bar-tek.com/media/cd/f0/79/1652867184/aem_breitbandlambda_kiteddb3.webp?ts=1772031805