17% off

ALIENTECH Original KESS v3 KESS3 ECU and TCU programming via OBD, Boot and Bench Replace Kess V2 Ktag

Item No. SE178 In Stock. History 35 sold.

Latest price: £799
Buy Now: £665 17% off
You can Contact us to get tech support Here:
WhatsApp: +86 18054815707
Email: sales@obdiitool.co.uk

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Product Description

ALIENTECH KESS v3 device with most powerful microprocessor on the market. GPS, Support Accelerometer, Bluetooth, and Wi-Fi, OBD, Bench and Boot 3 in 1, allows the READING and WRITING of the ECU found in Automobile, Motorcycle, Trucks, Agricultural Vehicles as well as Marine applications by simply connecting the supplied interface cable to the diagnostic port of the vehicle.


Thanks to thirty years of experience and nearly three years of development, KESS3 is the most advanced engineering achievement ever conceived in the Chiptuning industry. Alientech has made a significant breakthrough to create something unique and extraordinary, which has no equal in the market, in terms of functions, convenience, and versatility.

KESS3 has been developed to provide everyone, from the young engine enthusiast to the most specialized mechatronic technicians with a quick and simple interface to any engine control unit and automatic gearbox on the market.


  • All the essential lines to start any operation inside the vehicle in total safety.
  • Alientech addeAlientech added a new web infrastructure to the new KESS3.
  • GPS, Accelerometer, Bluetooth, and Wi-Fi. All embedded in one platform
  • COMMUNICATION METHODS: OBD, BOOT and BENCH connection from KESS3 to the control unit.
  • The renewed USB Full speed chip allows an up to 10x increase in the performance of importing and exporting files to and from the KESS3
  • New microprocessor, latest generation I/O interfaces, new built-in sensors and high-performance EEPROM and FLASH memories are the main features of KESS3.
  • KESS3 automatically and instantly recognizes the right communication line, to work faster, using only an OBD cable. Ethernet, FlexRay, CAN Bus, K-Line, L-line, J1850, J1708.
  • THE CPU The most powerful microprocessor on the market. 7 times more powerful than the previous generation. Pure power that can execute your commands reliably, faster and more efficiently.
  • Every aspect of KESS3 is carefully designed to achieve performance, operational flexibility, and ease of use. Its renewed architecture exploits the full potential of each component.

What types of vehicles are supported?

Alientech supports hundreds of thousands of vehicles. Not only engine control units, but also transmission control units equipped on cars,
motorcycles, tractors, trucks and boats. To know all the vehicles that Alientech supports, you can easily consult our vehicle list.

 ALIENTECH KESS V3 support language
 ALIENTECH KESS V3 software display 2
 ALIENTECH KESS V3 software display

KESS V3 vs Flex

Alientech Kess3 and Flex are two of the most powerful ecu programming tools on the aftermarket.

Both of these best tools have their own unique features and capabilities, which make them ideal for a wide range of users, master tools from professionals to enthusiasts.

Which device is better to choose?
KESS V3 vs Flex


Kess3 is a versatile tool that offers a range of tuning options for software, making it an ideal choice for professionals and enthusiasts alike.

Kess3 is known for its user-friendly interface, reliable performance, and compatibility with a wide range of engine models and brands.

One of the main advantages of Kess3 is that it is equipped with the most powerful microprocessor on the market, which is seven times more powerful than the previous generation. This means that Kess3 can execute your commands reliably, faster, and more efficiently. This tool is also used for obd port boot mode and ecu data. Another advantage of Kess3 is its automatic and instant recognition of the right communication line, which allows it to work faster using only an OBD cable. This makes Kess3 an easy-to-use and convenient option for those who want to tune their engine without any hassle. However, Kess3 can be expensive compared to other engine tuning tools, and it may require a stable internet connection for updates and database downloads. Additionally, Kess3 has limited customization options compared to Flex.

Kess3 Pros:

  • Powerful microprocessor
  • More potent than the earlier generation
  • Reliable execution of commands
  • Good technical support
  • Faster and more efficient performance
  • Automatic and instant recognition of the right communication line
  • New kess v3 combines kess and ktag into 1 tool, you buy the protocols then so you can buy just obd protocols and use like kess was or you can also buy all bench protocols like ktag

Kess3 Cons:

  • Can be expensive
  • Requires stable internet connectivity

Flex, on the other hand, is a highly customizable engine tuning tool that provides a comprehensive set of tools for engine calibration and testing. It allows users to create custom maps and configurations for specific engines, making it a highly adaptable tool for those who need more control over the tuning process. Flex is compatible with a wide range of engine models and brands, and its user-friendly interface makes it easy to use. One of the main benefits of this master tool is its ability to handle advanced and repair jobs with ease. The Flexbox module can detect eventual connection or communication errors, making it a reliable and efficient tool for engine tuning. Flex is the most advanced off All with updates exclusive protocols but all off them high prices. However, Flex can be relatively difficult to use for beginners and may require more configuration and setup than other engine tuning tools.

Flex Pros:

  •  Perfect for advanced and repairing jobs
  •  Flexbox module
  • Detects eventual connection or communication errors

Flex Cons:

  •  Hard to use for beginners
  • Requires more configuration
KESS3 Features:
Alientech Suite – NEW Software.
Such an advanced new hardware inspired Alientech to design software that would take full advantage of its potential. A completely redesigned and new operating suite, in design and architecture.

New look, clean design, everything you need at your fingertips. Updated regularly to be functional, usable and easy.

A completely renewed UX. An intuitive dashboard with improved access to the vehicle list with the ability to create a list of favorite vehicles and a view of the history of vehicles already interfaced.

List of protocols and vehicles updated daily and always available online www.alientech-tools.com/vehicles. Technical instruction available in multi-language to support users during the most complex operations.

The new interactive "search" function will allow you to access the vehicle list or search for the microprocessor of your ECU in a few seconds.
Downloading and updating the list are now instant.

Direct access to the Alientech help desk and all development news.

Personalize your custom KESS3.
Alientech gives a flexible solution that best suits your business requirements. You can choose the right configuration for you, based on your job today or what you may require tomorrow.

VERSIONS: Master or Slave according to your needs.

TYPE OF VEHICLES: Communication protocols divided into packages by type of vehicle.
Choose from the Car, Motorcycle, Truck / Tractor and Marine world packages.

COMMUNICATION METHODS: OBD, BOOT and BENCH connection from KESS3 to the control unit.


When purchasing the device, at least one software protocol is required. The basic version cannot function without licenses and is not sold separately! Upon purchasing a protocol you will recieve software updates and free technical support and for a year. In the future, the subscription is renewed for an annual fee.

KESS3 combines 3 operating mode

OBD - With the OBD mode, you can easily access all the ECU data through the diagnostic socket.

BENCH - A simple interface to the connector and you have complete access to the data of your ECU.

BOOT - This mode allows you to access all system data areas. Read, Write and Clone.

Master or Slave? Operate as you want!

MASTER - The configuration that allows you to edit software calibrations in a completely autonomous way. The read files can be interpreted by your choice of remapping software.

The most powerful microprocessor on the market. 7 times more powerful than the previous generation. Pure power that can execute your commands reliably, faster and more efficiently.

Package List:

  • KESS3
  • USB cable
  • The new generation OBD cable
  • 1400SWALIM power supply
  • 144300TALI Cable
  • 144300KBNC Cable
  • 144300KTER Pack
  • 144300T104 Rainbow Cable IDC 26-10
  • 144300T105 Rainbow Cable IDC 26-16
  • 144300T106 Rainbow Cable IDC 26-26
KESS3 package

 OBDSTAR X300 Classic G3
 Shipment Option and Delivery Time In OBDiitool.co.uk

 1. Shipment from Shenzhen/ Hongkong warehouse 

 1)DHL Shipping and Other Express Service:
  • Take About 5-7 working days
  • DHL will be the default delivery method
  • To help you clearance we will declare a lower price on the invoice to help clearance.
  • If address is remote area, you need pay remote freight 35 USD or we will ship by Normal Post or Yanwen/EMS/Aramex Express.
  • For some eu countries, there might be customs duty problem, if you have any special rquest on this, you can email to inform us your suggestions.
 2)Yanwen Express: 
  • Take About 7-10 working days,No Tax Problem
  • Usually No Tax for European Countries or Remote Area . The tax was pre-paid, when package reached, there's no tax no extra fee for customers.
  • Due to high custom tax in European Countries,Like Germany, Greece,Romania,Sweden,France,etc, we will use Yanwen express as first option, if you will need faster DHL shipment, please contact us ,thank you.
 3)Normal Registered Airmail Post way
  • Take About 10-16 working days, Sometimes will be 20 days. 
  • Registered Airmail Includes Netherlands Post, USPS Post, Singapore Post, Hongkong Post, etc
  • Order amount less than 150USD, and package weight less than 2KG will be sent by Registered airmail. 
  • But if you feel it is really slow, and want us to send by DHL, you can choose "Premium Delivery" and pay for the extra shipping for express service. finally we will send it by DHL. 
 2. UK, EU Warehouse Shipping: 
  • UK Customers Check: Ship from UK
  • EU Customers Check: Ship from Czech, it's ok to ship to all the EU countries.
  • Take About 3-7 working days, Free TAX, faster shipping with cheaper price. 
  • If US/UK Stock was sold out, your order will be shipped from China via DHL or YANWEN(No Tax).
  • Because of the UK Brexit and Pandemic, UK warehouse can't ship to other EU countries at present.
  • EU Warehouse was located in Germany/Czech and it only can ship to EU country: 
    Germany, France, Spain, Netherlands, Finland, Sweden, Austria, Belgium, Bulgaria, Croatia,
    Czech Republic, Denmark, Estonia, Greece, Hungary, Ireland, Latvia, Lithuania,Luxembourg,
    Malta, Poland, Portugal, Republic of Cyprus, Romania, Slovakia, Slovenia,5-7 DaysRoyal Mail/ DHL
After-sale service:
  • We can offer you lifetime customer service and tech support.
  • If you have any problems, please provide error image or video to show the problem, and kindly describe it in detail;
  • Technician will try their best to help you solve the problem. If there are no solutions, you can return for a refund or get a new one for replacement.
For any question, please contact us at:
  • Whatsapp:+86 18054815707
  • Email: Sales@OBDIItool.co.uk
  • Skype: Sales@OBDIItool.co.uk
  • Hot line: +86 18054815707
  • Accepting bulk purchases, We can Offer you wholesale price
  • We are the agent for many original brand such as Autel, Xhorse, OBDstar, VXdiag, XTOOL,Launch,CGDI, Yanhua ect.
OBDiitool.co.uk OBDII tool online supplier
  • Accepting bulk purchases, We can Offer you wholesale price.
  • OBDiitool.co.uk is a OBDII tool online supplier providing best-quality ECU chip uning tools, car diagnostic tools, OBDII Code scanners, car key programmers, heavy duty scanners, locksmith tools etc. 
  • Besides, we are the agent for many original brand such as Autel, Xhorse, OBDstar, VXdiag, XTOOL,Launch,CGDI, Yanhua ect.