do I need 30-0310 also or is this complete?

No need, the aem 30-0300 is a complete kit. The controller is in the gauge itself.

How do you mount this? Do i have to buy a seperate mounting device?

HelloWe usually mount it with this gauge pod Autometer 2204 or same oneIt sells separate https://www.amazon.com/Auto-Meter-2204-Mounting-Cup/dp/B0009RUXPG/ref=sr_1_2?ie=UTF8&qid=1491381219&sr=8-2&keywords=2204

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AEM30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge

AEM30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge

4.6/5

Product ID: 23493080

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Details

Brand
AEM
Material
Plastic
Item Weight
0.01 Ounces
Style
Modern
Maximum Supply Voltage
5 Volts

⚡ultra-fast response time

📊87% larger display

🔗multi-output data logging

Description

⚙️ Tune smarter, drive safer — the future of AFR control is here!

VERSATILE DATA OUTPUTS - 0-5V, RS232, and CANbus outputs ensure seamless integration with your logging and control systems.
MASSIVE 87 LARGER DISPLAY - See your AFR data in stunning clarity with the X-Series’ bold seven-segment center readout.
LIGHTNING FAST X DIGITAL TECH - Experience the fastest wideband AFR response for precision tuning that leaves competitors behind.
OPTIMIZED ENGINE SAFETY POWER - Advanced sensor readings enable safer, more powerful engine tuning with real-time feedback.
INERTIA DYNO DEAD TIME CORRECTION - Accurate AFR data reporting even under dynamic testing conditions for pro-level tuning confidence.

The AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge features an 87% larger, high-visibility display and patented X-Digital technology for the fastest response times in its class. With multiple output options including 0-5V, RS232, and CANbus, it offers professional-grade data logging and feedback control. Designed for precision engine tuning, it delivers safer, more powerful performance by minimizing dead time errors during dynamic testing.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

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€ 399.60

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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AEM30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge

Details

Description

Specifications

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Common Questions

Manufacturer	AEM
Brand	AEM
Model	30-0300
Item Weight	0.01 ounces
Item model number	30-0300
Is Discontinued By Manufacturer	No
Exterior	Machined
Manufacturer Part Number	30-0300
OEM Part Number	30-0300