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

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

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€ 484.06

Duties & taxes included

In stock

Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Cyprus.

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Description

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

OPTIMIZED ENGINE TUNING - Advanced sensor readings unlock tuning insights others can’t, maximizing power and safety.
MASSIVE 87 LARGER DISPLAY - See your AFR data with unmatched clarity on the bold new seven-segment center display.
VERSATILE DATA CONNECTIVITY - 0-5V, RS232, and CANbus outputs enable seamless integration with your logging and control systems.
LIGHTNING FAST X DIGITAL TECH - Experience the fastest wideband AFR response for precision tuning and safer engine performance.
INERTIA DYNO DEAD TIME REDUCTION - Accurate real-time AFR feedback minimizes lag, giving you the edge in dynamic tuning scenarios.

The AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge features an 87% larger seven-segment display, cutting-edge X-Digital technology for the fastest response times, and multiple output options (0-5V, RS232, CANbus) for advanced data logging and engine tuning. Designed for professional-grade precision, it delivers optimized air/fuel ratio readings that enhance engine performance and safety, making it a top choice for serious automotive enthusiasts and tuners.

Specifications

ASIN	B0184TSI84
Best Sellers Rank	#14,958 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Air & Fuel Ratio Gauges
Brand	AEM
Brand Name	AEM
Customer Reviews	4.6 out of 5 stars 2,214 Reviews
Global Trade Identification Number	00840879024437
Included Components	X-Series Wideband UEGO AFR Sensor Controller Gauge
Item Type Name	AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge
Item Weight	0.27 g
Manufacturer	AEM
Material	Plastic
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	Manufacturer's 1 Year Warranty

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€ 484.06

Duties & taxes included

In stock

Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Cyprus.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.