T7Design | Continental GM Flex Fuel Ethanol Content Sensor 70-13577429

Continental GM Flex Fuel Sensor 70-13577429

Nuke Performance Full Flow Flex Fuel Sensor Adapter

£172.80 £144.00
Availability: In stock

Nuke Performance Full Flow Flex Fuel Sensor Adapter

This Nuke Performance full flow flex fuel sensor adapter is used 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 AN10 fuel line.

Please Note: A flex fuel sensor is not included with this adapter and is sold separately.

  • Fits most common GM flex-fuel sensors.
  • Bypass design exceeds AN10 fuel line capacity.
  • ORB10 inlet and outlet for maximum fuel flow.
  • Works on both pressure and return fuel lines.
  • Lightweight design with an integrated bracket.
  • Utilises 4x Viton o-rings for long-term durability.

Specification Metric Imperial & Other
Height* 44.2mm / 56.2mm 1.74" / 2.21"
Width 137mm 5.39"
Depth* 32mm / 42.5mm 1.26" / 2.21"
Bracket CC 48mm 1.89"
Weight 240g 0.52"
Sensor Max Width 95mm 3.75"
Fits Sensors SE1003, 13577379, 13577429, 13577394**
Inlet Thread ORB10
Outlet Thread ORB10
Bypass Design Yes, total internals exceeds AN10 fuel line
Fuel Compatibility Gasoline, Petrol, Methanol & Ethanol
Integrated Bracket Yes, removable when not required
Sensor Connection SAE 9.49 (5/16")

*First measurement is without the bracket, second measurement is with the bracket.

**Sensor 13577394 needs modification before application.

Kit Contents
Quantity Description
1x Nuke Performance full flow flex fuel sensor adapter
1x Lightweight bracket (removable when not needed)
1x Safety leaflet
Further Information

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 adapter as long as they use SAE 9.49 (5/16") connections.

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 GM / Continental 13577429, 2022400116, 13577379, SE1003 and even the 13577394, which needs to be modified to a width of 95mm (3.75").

Designed with a bypass design that exceeds an AN10 fuel line capacity and 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 AN10 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.

Delivered with a lightweight bracket for an easy mounting solution for the GM / Continental 13577429 flex fuel sensor.
One of the most common Ethanol content sensors, the GM / Continental 13577429, lacks mounting points as stock. With the Nuke Performance full flow flex fuel sensor adapter, you will receive all benefits of a split-flow design while integrated brackets provide a safe and durable installation, particularly helpful alongside the often-demanding conditions within Motorsport. For the GM 13577379 and 13577394, which have their own mountings holes, you do not need to use the provided mounting bracket.

  • If you have any questions or require further assistance please do not hesitate to call or send us an e-mail.
  • Please Note: A flex fuel sensor is not included with this adapter and is sold separately.
More Information
Manufacturer Nuke Performance

Shipping Information & Charges

VAT is included on the UK prices below, no VAT is applicable on ROW prices.

European Customers: We offer a next working day delivery service to most European countries, please get in touch for pricing.

ROW Customers: If you would like a more accurate shipping quote or a faster service via DHL please get in touch with your requirements.

United Kingdom & Northern Ireland

Service GBP 0 - 50 (inc VAT) GBP 50+ (inc VAT)
RM Second Class 3.60 N/A
RM First Class 4.20 N/A
DPD / DHL Next Working Day 9.00 9.00
DPD Next Working Day by 12am 16.50 16.50
DPD Saturday All Day 15.00 15.00
DPD Saturday by 12am 39.50 39.50
DPD Sunday All Day 19.50 19.50

Scottish Highlands & Islands, Channel Isles, Scilly Isles, Isle Of Man, Isle of Wight
Service GBP 0 - 50 (inc VAT) GBP 50+ (inc VAT)
RM First Class 4.20 N/A
DPD / DHL Two Day 17.30 17.30


DHL Tracked Delivery. Approx 2 - 7 days depending on distance from the UK.

Country Cost in GBP
AUT - Austria 30.00
BEL - Belgium 25.00
BIH - Bosnia and Herzegovina 50.00
BGR - Bulgaria 45.00
HRV - Croatia 35.00
CZE - Czech Republic 35.00
CHE - Switzerland 42.00
DNK - Denmark 30.00
EST - Estonia 35.00
FIN - Finland 35.00
FRA - France 35.00
DEU - Germany 28.00
GIB - Gibraltar 46.00
GRC - Greece 40.00
HUN - Hungary 35.00
IRL - Ireland 25.00
ISL - Iceland 50.00
ITA - Italy 32.00
LVA - Latvia 46.00
LTU - Lithuania 45.00
LUX - Luxembourg 26.00
NLD - Netherlands 26.00
NOR - Norway 45.00
POL - Poland 35.00
PRT - Portugal 35.00
ROU - Romania 45.00
SRB - Serbia 45.00
SVN - Slovenia 35.00
SVK - Slovakia 35.00
ESP - Spain 30.00
SWE - Sweden 35.00

Rest Of World

Below are the most popular countries we ship to world-wide. If your country is not listed please get in touch for a quote.

DHL Express: We offer shipping via DHL, please get in touch for pricing and more information on their Worldwide 1-2 day services.

Country Cost in GBP
CAN - Canada 60.00
JAM - Jamaica 50.00
JPN - Japan 70.00
MLT - Malta 58.00
MYS - Malaysia 50.00
NZL - New Zealand 52.00
RUS - Russia 50.00
ZAF - South Africa 49.00
THA - Thailand 55.00
USA - United States of America 70.00
SGP - Singapore 90.00


By Order Value: GBP 0 - 50 GBP 50 - 120 GBP 120+
AUS - Australia 40.00 60.00 80.00