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Item #:
138153116
AEM Wideband Sensor Gauge 30-0300 X-series AFR O2 UEGO Air Fuel Ratio Gauge Kit
Item #:
138153116
€ 233
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*All items will import from US
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Imported from USA store
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Order now and get it around Thursday, August 13
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AEM's X-Series Wideband Air/Fuel Ratio Sensor Controllers are the fastest responding wideband air/fuel ratio controllers in independent testing.
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What Stands Out
Accurate Readings
Provides precise air-fuel ratio measurements with a wideband sensor, ensuring optimal engine performance and efficiency for tuning enthusiasts and professionals.
User-Friendly Display
Equipped with an easy-to-read gauge display, allowing for quick interpretation of air-fuel ratios, which enhances user experience and streamlines the tuning process.
Comprehensive Kit
Includes all necessary components for installation, combining convenience and quality, making it an ideal choice for both DIYers and automotive professionals.
Product Details
| Other Part Number | AEM Gauge Kit |
| Type | Gauge Kit |
| Interchange Part Number | X-Series Gauge Kit, aem wideband sensor |
| Manufacturer Warranty | 1 Year |
| Part | aem wideband gauge |
| Manufacturer | AEM |
| Model | aem wideband x series |
| Part Type | aem wideband 30-0300 |
| UPC | 0672713967163 |
| Item Diameter | 16 in |
| Color | Black |
| Manufacturer Part Number | 300300 |
| Material | Plastic |
| Superseded Part Number | 30-4100 |
| Vintage Part | No |
| Maximum Speedometer Value | 100 mph |
| California Prop 65 Warning | Cancer & Reproductive Harm |
| Brand | AEM |
| Display Type | Digital |
| OE/OEM Part Number | 30-0300 |
| Style | Racing |
| Universal Fitment | Yes |
| Country of Origin | United States |
| Performance Part | Yes |
| Item Weight | 1.5 lbs (680 grams) |
Dangerous Goods
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Who Should Buy?
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Performance Tuners
Ideal for automotive enthusiasts looking to optimize engine performance through accurate air-fuel ratio monitoring.
-
DIY Mechanics
Great for hobbyists or professional mechanics who want to troubleshoot and fine-tune engine setups effectively.
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Race Car Drivers
Beneficial for racers needing precise real-time data to maintain optimal engine performance under high-stress conditions.
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Casual Drivers
Not suitable for everyday vehicle users who do not require detailed air-fuel ratio insights for their driving.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What fuel types can the X-Series Wideband Controller be used with?
Answer: It can be used with gasoline (including leaded race gas), methanol, ethanol, diesel, propane, and CNG. -
Question:
What features make the X-Series gauge user-friendly?
Answer: The gauge has a user configurable display and allows for easy switching between AFR, Lambda, and O2% readings. -
Question:
How does faster response time improve performance?
Answer: Faster response time enhances wideband feedback control, resulting in safer and more precise engine tuning.
aem Editorial Review
The AEM 30-0300 Wideband Gauge X-series AFR O2 UEGO Air Fuel Ratio Gauge Kit has garnered a wealth of positive feedback from customers who appreciate its functionality and ease of use. Many reviewers emphasize that it's particularly effective in various settings, including off-road applications, offering clear visibility even under challenging conditions. The gauge's design features stand out, especially its single-board architecture and plug-and-play harness, which facilitate a straightforward installation process. Customers highlight the gauge's visual clarity, praising the large red numerical display that allows for quick glances while driving. The inclusion of a parameter light adds an essential safety feature, helping users to monitor air-fuel ratios without removing their focus from the road or track. Users also appreciate the gauge’s flexibility, noting that it effectively incorporates lambda readings suitable for E85 fuel compatibility. While some reviews acknowledge that the gauge comes at a premium price, most users feel that the investment is justified, especially given its performance and reliability. The unit's capacity for logging data via a db9 cable further contributes to its appeal for those looking to fine-tune their vehicles effectively. Overall, the AEM 30-0300 Wideband Gauge is regarded as a top-tier choice among air-fuel ratio monitors in the market today. **
Customer Reviews & Ratings
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Pros
- Easy to read display, even in off-road conditions
- Plug-and-play installation with included hardware
- Single-board design enhances reliability
- Provides lambda and UEGO readings, compatible with E85 fuel
- Visual clarity with large red numbers and parameter light
- Enables easy data logging for fine-tuning performance
Cons
- Higher price point compared to some competitors
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
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Onesi
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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23 July 2026 · via Trustpilot
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€ 233
Order now and get it around Thursday, August 13
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Features & Benefits
- Fastest responding wideband controllers backed by independent testing.
- Unique X-Digital technology ensures real-time signal fidelity.
- User-friendly display allows for customizable readings (AFR, Lambda, O2%).
- Compatible with a wide range of fuel types and systems.
- Slim depth design increases versatility for mounting options.
- Improves performance and safety through optimized engine tuning.
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