Nuke Performance Full Flow Flex Fuel Sensor Adapter

Out of stock

Nuke Performance Full Flow Flex Fuel Sensor Adapter

With the Nuke Performance bypass Full Flow Flex Fuel Sensor Adapter, you can mount your ethanol content sensor on both the pressure and return fuel line in your fuel system. A sensor is not included with delivery.

  • Fits most common GM flex-fuel sensors
  • Bypass design exceeds AN-10 fuel line capacity
  • AN-10 ORB inlet/outlet for maximum fuel flow
  • Works on both pressure and return fuel lines
  • Lightweight design, with an integrated bracket
  • 4 x Viton O-rings for long-term durability

When running alcoholic fuels such as E85, an ethanol content sensor is used to measure fuel at all times in order to maintain the accuracy and performance of the ECU. The most commonly used sensors have a very small flow capacity which doesn´t support a high-performing fuel setup. With this sensor adapter, you can put the sensor on both the pressure and return side with close to no flow loss, thanks to its bypass design which surpasses the capability of a dash 10 fuel line.

Fits all of the most common OEM ethanol content sensors for your aftermarket fuel system.

Designed to work with the most common flex-fuel sensors on the market from OEM manufacturer GM (Continental), this adapter works with 13577379, 13577429, SE1003, 13577394, and other sensors of the same design. Many of the standalone ECU manufacturers, such as Haltec, Cobb Tuning, Fuel Tech USA, ECU Master, AEM, Link, and MaxxECU, sell sensors with their own branding. However, these normally have the same specifications as the OEM parts and work with the Nuke Performance sensor adaptor as long as they use 9.49 (5/16") connections.

Designed with a bypass design that exceeds an AN10 fuel line capacity, oversized components give you headroom where you need it.

The oversized internal bypass fuel line integrated within the Nuke Performance Full Flow Flex Fuel Sensor Adapter exceeds a AN-10 fuel line capacity. The oversized internal gives you headroom where you need it and makes it possible to mount the sensor on either the pressure or return side of your fuel system.

Which flex fuel sensor can be used with the Nuke Performance bypass ethanol content sensor adapter?

The Nuke Performance split-flow sensor adapter has been developed to be used together with all the commonly used flex fuel content sensors such as Continental (GM) 13577429, 2022400116, 13577379, SE1003, and even the 13577394, which needs to be modified to a width of 95mm (3.75"). 

  • GM 13577429 flex fuel sensor
  • GM 13577379 flex fuel sensor
  • GM13577394 flex fuel sensor

The full flow flex fuel sensor adapter is delivered without the needed flex fuel sensor.

Uses over-dimensioned AN-10 ORB fuel line fittings for maximum flow with close to no flow loss even with high flow fuel setups.

Overdimensioned AN-10 inlet/outlet threads allow for the highest possible fuel flow capacity. The AN-10 ORB fittings have the highest possible flow and are available in a large variety of sizes. Additional AN-10 ORB to AN-6, AN-8, AN-10, and AN-12 fittings are sold separately as accessories.

  • AN-10 ORB to AN-6 Male Part # : 700-01-108
  • AN-10 ORB to AN-8 Male Part # : 700-01-109
  • AN-10 ORB to AN-10 Male Part # : 700-01-110
  • AN-10 ORB to AN-12 Male Part # : 700-01-111
  • AN-10 ORB to AN-10 Female Part # : 700-04-121
  • AN-10 ORB to 8mm Barb Male Part # : 700-04-124

Delivered with a lightweight bracket for an easy mounting solution for the GM 13577429 flex fuel sensor.

One of the most common ethanol content sensors, the GM 13577429, lacks mounting points as stock. With the Nuke Performance Full Flow Flex Fuel Sensor Adapter, you will both receive all the benefits of a split-flow design while integrated brackets provide a safe and durable installation, particularly helpful alongside the often demanding conditions within motorsports. For the GM 13577379 and 13577394, which have their own mountings holes, you do not need to use the provided mounting bracket.

Developed and designed for both enthusiasts and professional motorsport athletes by Nuke Performance in Sweden.

The Nuke Performance full flow flex fuel sensor adapter, AN-10 is developed and designed in-house by Nuke Performance in Sweden for the highest possible quality with the same hallmark as all the other parts in our lightweight motorsports range. There is no substitute for the quality of Nuke Performance!

Read More
Read Less


All in stock orders placed will be processed for shipping within 24 business hours. If an item is out of stock we will promptly contact you.

All products are shipped via UPS, USPS, Fedex DHL and through LTL Service providers for oversize items.

Your item may be subjected to being drop shipped directly from the manufacturer or one of our 3rd Party warehouses.

In the event a product arrives damaged to your location, please follow the steps listed in our Return & Exchange Policy for further instructions. All damaged items must be reported to the shipping carrier immediately and you must notify Kool Haus Performance within 48 Hours of receiving your order.

If you receive a damaged product, please do the following:

    1. Keep the product with its original packaging and box 
      2. Make a list of the damaged or lost item(s) 
      3. Kool Haus Performance will contact the shipper once we receive the email info above to schedule a pickup if needed. DO NOT send it back to the return address without written approval from Kool Haus Performance.

Once the product is received back and inspected, a replacement or credit will be issued.

If you are in a rush for an order or require special arrangements then please contact us and we will try to accommodate you.


We have a 7-day return policy, which means you have 7 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at

If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

You can always contact us for any return question at

Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Exceptions / non-returnable items
Certain types of items cannot be returned, like perishable goods (such as food, flowers, or plants), custom products (such as special orders or personalized items), and personal care goods (such as beauty products). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.

Unfortunately, we cannot accept returns on sale items or gift cards.

The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

European Union 14 day cooling off period
Notwithstanding the above, if the merchandise is being shipped into the European Union, you have the right to cancel or return your order within 14 days, for any reason and without a justification. As above, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at

We use cookies to improve your experience on our website. Read about how we use cookies in our Privacy Policy. By browsing this website, you agree to our use of cookies. privacy policy

Your cart