AEM Digital Wideband UEGO Gauge

Marsoni

M251S

$179.95

Get it in 3 business days with 1 day shipping. Friday, May 29

AEM Digital Wideband UEGO GaugeAEM's legendary Digital Wideband O2 AFR UEGO Gauge is a wideband UEGO air fuel ratio controller (AFR) and gauge in one. It unites accuracy, speed and control with an easy to read, digital LED display and sweeping LED "needle" that changes colors as AFR changes from rich to lean. NOTE: The 30 4100 Wideband UEGO Gauge Controller that uses the 4. 2 LSU sensor will be superseded to the 30 4110 Wideband UEGO Gauge Controller that uses the 4. 9 LSU sensor

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Reviewed in the United States on April 24, 2026

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Whiting, US

★★★★★ 5

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Reviewed in the United States on May 16, 2024

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Omaha, US

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Reviewed in the United States on December 1, 2025