AEM X-Series OBDII Gauge Kit

Marsoni

M251S

$179.99

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

AEM X-Series OBDII Gauge KitAEM's X Series OBDII gauge (PN 30 0311) puts multiple channels of data at your fingertips by reading the CAN bus stream of your vehicle's OBD port and transmitting those channels to the gauge display. It reads Diagnostic Trouble Codes (DTCs) and gives you the ability to clear codes. Wiring is as simple as connecting the gauge to your vehicle's OBDII port using the supplied connector! Because the X Series OBDII gauge reads OBDII parameters transmitted

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Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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Don't let my 4-star review dissuade you, as I've had to reassess prior products that initially I thought were great but then failed me in the long term. These are definitely full and plush, you might want to avoid if you prefer slightly thinner support, especially if you are a side sleeper. But so far I find them comfortable and meeting all of my expectations.

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Reviewed in the United States on February 28, 2026