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AEM X-Series OBDII Wideband UEGO AFR Sensor Controller Gauge

Marsoni M251S
Sale price$137.62
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Get it in 3 business days with 1 day shipping. Friday, May 29
AEM X-Series OBDII Wideband UEGO AFR Sensor Controller GaugeAccurate AFR data is critical when tuning an engine. Running rich (very low air fuel ratio, excessive fuel) can cause a loss in power, while running too lean (very high air fuel ratio, not enough fuel) may result in serious engine damage. Using a wideband air fuel controller during the tuning process allows you to monitor AFR and adjust tuning parameters to optimize them for maximum power and efficiency. AEM has a comprehensive line of highly
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4.3 ★★★★★
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José R.
Charlottesville, US
★★★★★ 5
The product is good.
Color: Grey, Size: Medium
Good for all weather, don’t need to iron, I use it for all occasions specially for work, is good material, good quality, price is right, I like the color.
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Reviewed in the United States on May 31, 2026
R
Verified Purchase
R and J Coe
Whiting, US
★★★★★ 5
Great for the Money
Color: Blue, Size: X-Large
Nice cut. Properly sized. Great product for the money.
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Reviewed in the United States on May 29, 2026
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Verified Purchase
Bobby
West Palm Beach, US
★★★★★ 5
I like it!
Color: Khaki, Size: Large
Worth the price. Comfortable. Great assortment of colors.
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Reviewed in the United States on May 21, 2026
J
Verified Purchase
james sherman
Omaha, US
★★★★★ 5
Sweet
Color: Navy Blue, Size: Large
Good fit, solid quality.
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Reviewed in the United States on May 11, 2026
R
Verified Purchase
RUACH HEALING TEMPLE
Belleville, US
★★★★★ 5
Good quality
Color: White, Size: 3X-Large
For this item is best to get a size up. They run small, but the quality is very good.😊
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Reviewed in the United States on April 29, 2026

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