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AEM X-Series Wideband UEGO AFR Air Fuel Ratio Controller Gauge With Sensor

1st Class Service & Huge Stock From Demon Tweeks Direct
Demon Tweeks Direct
(495740)
Registered as a business seller
£216.04
From £10.19 per month for 24 months with *
Condition:
New
More than 10 available188 sold
Breathe easy. Returns accepted.
People want this. 92 people are watching this.
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Postage:
£32.42 International Priority Shipping to United States via eBay's Global Shipping Programme
This amount includes seller specified domestic postage charges as well as applicable international postage, dispatch, and other fees. This amount is subject to change until you make payment. For additional information, see the Global Shipping Programme terms and conditions
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Located in: Wrexham, United Kingdom
Import charges: 
Free amount confirmed at checkout
This amount includes applicable customs duties, taxes, brokerage and other fees. This amount is subject to change until you make payment. For additional information, see the Global Shipping Programme terms and conditions
Delivery:
Estimated between Mon, 18 Aug and Tue, 26 Aug to 94104
Estimated delivery dates - opens in a new window or tab reflect seller's dispatch time, origin postcode, destination postcode and time of order receipt, and will depend on the delivery service selected and receipt of cleared paymentcleared payment - opens in a new window or tab. Delivery times may vary, especially during peak periods, and are an estimate only.
Includes international tracking
Returns:
30 days return. Buyer pays for return postage. If you use an eBay delivery label, it will be deducted from your refund amount.
Payments:
    Diners Club
*From £10.19 per month for 24 months.
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Direct from DEMON TWEEKS
Item sold directly by the brand. 
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eBay item number:143329663823
Last updated on 07 Aug, 2025 09:00:49 BSTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging ...
Manufacturer
AEM Electronics
MPN
30-0300
EAN
840879024437
Brand
AEM
Manufacturer Part Number
300300
Boost Control Part Type
Boost Gauge

About this product

Product Identifiers

Brand
AEM
MPN
300300
Manufacturer Part Number
300300
EAN
0840879024437
Model
30-0300
eBay Product ID (ePID)
27031978816

Product Key Features

Boost Control Part Type
Boost Gauge

Additional Product Features

Custom Bundle
No

Item description from the seller

Seller business information

I certify that all my selling activities will comply with all EU laws and regulations.
VAT number: GB 840250170
I provide invoices with VAT separately displayed.
CRN: 01049663
About this seller

Demon Tweeks Direct

99.8% positive Feedback1.3M items sold

Joined Mar 2003
Usually responds within 24 hours
Registered as a business seller
Demon Tweeks are one of the largest suppliers of Motorsport, Performance Road Car and Motorcycle parts and accessories in Europe. With over 51 years in the business you can buy from us with the ...
See more

Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable postage cost
5.0
Delivery time
5.0
Communication
5.0

Seller Feedback (531,060)

All ratings
Positive
Neutral
Negative
    • 7***8 (769)- Feedback left by buyer.
      Past year
      Verified purchase
      Great seller
    • eBay automated Feedback- Feedback left by buyer.
      Past month
      Order completed successfully – tracked and on time
    • k***2 (804)- Feedback left by buyer.
      Past 6 months
      Verified purchase
      A***ebayer
    See all Feedback

    Product ratings and reviews

    4.7
    57 product ratings
    • 49 users rated this 5 out of 5 stars
    • 5 users rated this 4 out of 5 stars
    • 0 users rated this 3 out of 5 stars
    • 0 users rated this 2 out of 5 stars
    • 3 users rated this 1 out of 5 stars

    Would recommend

    Good value

    Good quality

    Most relevant reviews

    • Most favourable review

      Aem afr gauge

      Great kit, easy to install if only using the gauge for afr as it's just power supply wires needed. It is not recommended to cut down the sensor harness, bit rubbish as there is way too much for a motorcycle install. Also nowhere in the description does it say not waterproof!! Even the aem website says good for cars or bikes. Only after I installed the thing did I get to the part where it says the gauge will fail if water gets on/in it!!! What the fudge, that should be a big point to let prospective buyers know. Now gotta work out how to tuck it somewhere dry behind the fairing screen. I bought this to replace an innovate lm1 that had a failed sensor, that was waterproof and worked fine on the bike for 3 years.

      Verified purchase: YesCondition: NewSold by: quantum-fuel

    • the best wideband around

      simply put, the best wideband in the market. if you have a tuned car and you can afford it, just buy it! monitoring your mixture is crucial, and no other gauge does this more precisely and responsively than the new x-series. according to my tuner, who monitors mixtures using super-expensive and complex equipment, my aem gauge readings are absolutely identical to his, without any hint of delay. also, based on his experience, this x-series outperforms the innnovate wideband, which is also considered top class. on top of it, it's very compact, stylish, with clearly visible readings under any condition. so, 'why 4 stars instead of 5', you might wonder.. well, it's because of the bosch sensor that's included. these sensors are used by almost every top company, but have a nasty reputation of ...

      Verified purchase: YesCondition: NewSold by: quantum-fuel

    • Great product

      Works just fine, really almost plug and play (just welding of the lug onto the exhaust). Very fast update, really too fast to see, but used in a control system, just perfect.

      Verified purchase: YesCondition: NewSold by: quantum-fuel

    • Fast response maybe they should call it yay e. m

      Fast easy to install calibration tables in the manual nice bit of kit blows my old tech edge controller out of the water did I mention fast fuel maps are way more accurate now

      Verified purchase: YesCondition: NewSold by: quantum-fuel

    • Quality original AEM product.

      Quality original AEM product. useful fitting guide and clearly well liked by many enthusiasts with a wealth of video guides on installation online. Should help with "road tuning" and avoid damage to your engine used correctly.

      Verified purchase: YesCondition: NewSold by: demontweeksdirect