Kess3 Slave Tools - Hardware Only*

699,00 € each

No stock

Alientech KESS3 – The next generation of tuning tools

The KESS3 is the latest ECU tuning tool from Alientech that replaces both the KESSv2 and K-TAG.

KESS3 gives you more control than its predecessors, KESSv2 and K-TAG, and can be upgraded without the need to spend money on new hardware. This new tool allows users to remap in a faster, easier way than ever before, with the ability to use both OBD or Bench Tuning methods from the same device.

The KESS 3 tool is the latest step in ECU tuning, which is faster and more powerful than its predecessors.


Buy KESS3 Now

KESS3 Shop

KESS 3 Features

  • Fast Interface
  • All In One Tool
  • Flexibility
  • Bench and Boot
  • Light Speed
  • Alientech Suite
  • Clear instructions
  • Quick Search Filters
  • Built For The Real World
  • Upgraded Cable Set
  • Warp Speed Checksum

Built For The Real World


The new Kess3 has a protective rubberised layer around the outer edge of the tool to absorb shocks and bumps when its being used in real environments such as garages and “in the field” mobile tuning. Complete with none slip feet for added safety when working on a vehicle.

KESS3 Shop
KESS 3 Logo

Here are the 6 top highlights…

1. You no longer need separate tools for OBD and Bench Tuning.  With the new KESS3, this is now a combined feature.

2. Greater choice and granularity with new Protocols Packs:

– Car – LCV

– Bike – ATV & UTV

– Agriculture – Truck & Buses

– Marine & PWC

3. Lightning quick reads and writes with advanced processing speeds, means  Warp speed checksum calculations.

4. KESS V2 Cables are transferable – no need to  buy new cable sets

5. Bench and Boot protocols are now available to purchase individually

6. Service mode – greater coverage; no need to open the ECU to perform bench tuning anymore on a greater selection of ECU types


How does the KESS3 compare?



KESSv2 Tuning Tool

✔️ OBD Tuning

❌ Bench/Boot Tuning

❌ Upgradable from Slave to Master

❌ Separate Car & Bike Protocols

Uses K-Suite

Standard Cable Set

Standard Speed Checksum Calculations


❌ OBD Tuning

✔️ Bench/Boot Tuning

❌ Upgradable from Slave to Master

❌ Separate Car & Bike Protocols

Uses K-Suite

Standard Cable Set

Standard Speed Checksum Calculations


✔️ OBD Tuning

✔️ Bench/Boot Tuning

✔️ Upgradable from Slave to Master

✔️ Separate Car & Bike Protocols

✔️ Works with some existing KESSv2 cables

⭐ Uses Alientech Suite

⭐ Upgraded Cable Set

⭐ Superfast Checksum Calculations

⭐ 10x Faster Processing


All in One.
OBD, Bench and Boot mode.

The KESS3 tool combines three modes of operation. The first is OBD, the second is Bench, and the third is Boot.

Select the settings that fit your work requirements. KESS3 gives you the best remapping experience no matter your level and experience.

Alientech Kess3

Renewed architecture

KESS3’s design is targeted at achieving performance, operational flexibility, and user-friendliness.

Each component of its architecture is made to perform at its maximum potential.

Kess3 American

Innovative Design

KESS3 case design is completely new.

Researchers at Alientech have incorporated the best usable materials to provide added value.


Alientech Suite

A new hardware platform so powerful inspired Alientech to design software that could take full advantage of its potential.

A completely redesigned software solution is now available.


Alientech Suite VZ Logo


The Alientech Suite is a streamlined, purpose-built interface for tuners using the KESS3. Taking all the technical know-how, tuners requirements and world-leading tuning tool development, the Alientech Suite delivers the most efficient and easy to use tuning platform on the market today. Alientech Suite combines the three essential methods of vehicle tuning in one software program;

  • OBD – Connecting the vehicles on-board diagnostic port
  • BENCH – Connecting directly to the CU (Control unit) connector plugs without the need to open the ECU itself
  • BOOT – Direct connection to the  CU (Control unit) circuit board through a variety of connection methods.

Combining the 3 tuning methods into one easy to navigate software program that is open and ready to use in a matter of moments, provides all professional tuners with the efficiency and stability to tune vehicle control units with complete confidence.

Always up-to-date manuals – With the Alientech Suite, you will always have access to the latest manuals for the active protocols you are using. With the unique method of downloading the protocol you are about to use each time, the Alientech Suite provides you with not only the latest updated version of the protocol but the correct and up-to-date instruction manuals for the active protocol. Further adding to the peace of mind that the Alientech Suite is there to help you as you tune each and every vehicle you work on.

Alientech Suite kess 3

KESS3 Logo Grey