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

Aem 30 0300 X Series Wideband Uego Afr Sensor Controller

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Description

🚀 Tune Smarter, Drive Safer — The Ultimate Wideband Gauge for the Millennial Pro

PRECISION MEETS POWER - X-Digital tech captures ultra-accurate AFR fluctuations for optimized tuning and safety.
SEAMLESS CONNECTIVITY - 0-5V, RS232, and AEMnet outputs enable advanced data logging and multi-cylinder integration.
COMPACT YET COMMANDING - 52mm diameter with ultra-slim 0.825” depth fits tight spaces without sacrificing visibility.
PLUG PLAY CONFIDENCE - Factory calibration plus Bosch 4.9LSU sensor compatibility means rapid setup and reliable readings.
USER CENTRIC CUSTOMIZATION - Configurable display modes, auto-dimming, and free-air calibration keep you in control effortlessly.

The AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge is a precision 52mm gauge featuring an 87% larger seven-segment display, ultra-slim profile, and advanced X-Digital wideband technology. It offers lightning-fast response times, multiple output options including CANbus for daisy-chaining up to 16 cylinders, and user-configurable displays with auto-dimming. Compatible with Bosch 4.9LSU sensors and supporting free-air calibration, it delivers reliable, factory-calibrated accuracy for optimized engine tuning across various fuels and applications.

Specifications

ASIN	B0184TSI84
Best Sellers Rank	#19,240 in Automotive ( See Top 100 in Automotive ) #2 in Automitive Electrical Air & Fuel Ratio
Brand Name	AEM
Customer Reviews	4.6 4.6 out of 5 stars (2,142)
Global Trade Identification Number	00840879024437
Included Components	X-Series Wideband UEGO AFR Sensor Controller Gauge
Item Type Name	Gauges
Item Weight	0.01 Ounces
Manufacturer	AEM
Material Type	Plastic
Model	30-0300
Number of Items	1
Number of Packs	1
Part Interchange Info	30-0300
Part Number	30-0300
UPC	840879024437
Unit Count	1 Count
Warranty Description	Warranty

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