Dose this item come with the collar to weld to the exhaust?

Yes, this comes with the weld on boss

Is the weld-on boss mild or stainless steel?

It is mild steel. You can find stainless steel bung if you want on our store. It is sold separately.

30 0300 X Series Wideband Uego Afr Sensor Controller Gauge

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

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Description

⚙️ Tune smarter, not harder — the future of AFR control is here!

COMPACT YET POWERFUL - Slim 52mm gauge with ultra-thin depth fits effortlessly in any cockpit setup.
CUSTOMIZABLE DURABLE - User-configurable display modes, auto-dimming, and locking connectors ensure reliability and style.
LIGHTNING FAST FEEDBACK - Patent-pending X-Digital tech delivers the fastest response time for precision tuning.
VISUAL CLARITY REDEFINED - Massive 87% larger seven-segment display for instant AFR insights at a glance.
SEAMLESS DATA INTEGRATION - Supports 0-5V, RS232, and CANbus outputs for advanced data logging and control.

The AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge combines cutting-edge X-Digital technology with an 87% larger display and ultra-fast response times. Designed for professional-grade tuning, it offers versatile output options (0-5V, RS232, CANbus) and a compact 52mm form factor with customizable display settings and durable construction, making it the go-to gauge for precision air/fuel ratio monitoring.

Specifications

ASIN	B0184TSI84
Best Sellers Rank	30,746 in Automotive ( See Top 100 in Automotive ) 2 in Car Electrical Air & Fuel Ratio
Brand	AEM
Customer Reviews	4.6 out of 5 stars 2,102 Reviews
Global Trade Identification Number	00840879024437
Included Components	X-Series Wideband UEGO AFR Sensor Controller Gauge
Item Type Name	Gauges
Item Weight	0.01 Ounces
Item weight	0.01 Ounces
Manufacturer	Advanced Engine Management
Manufacturer Part Number	30-0300
Material	Plastic
Model Number	30-0300
Number of items	1
Part Interchange Info	30-0300
Thread Type	Digital
Thread type	Digital
UPC	840879024437
Unit Count	1.0 count
Unit count	1.0 count

Reviews

R**U

Seller didn't advertise this item properly

Some of the digits were not working properly.

9.10.2025

J**.

Trashed

£195 for this.... dont think so

6.05.2026

C**R

Beware - Fake item

The gauge came in a rather scruffy but genuine looking AEM box. However the gauge and sensor included were not genuine - The gauge was not even marked as AEM, and the sensor was not a Bosch unit. Have requested refund.

29.04.2023

S**A

Excelente

Tengo 2 meses de uso y está funcionando perfectamente

22.08.2024

G**A

Rapido y original

Perfexto funcionamiento, calidad superior

17.01.2025

K**Y

Aem for the win

No issues, straight forward install. 17 sierra

20.05.2026

R**O

Ottimo

Spedizione molto veloce, arriva tutto come si presenta in foto

9.03.2022

U**W

All good

Don’t hesitate

7.02.2026

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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HK$3500

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago