Mercedes ACM 2.1 Bench Cable (Temic ACM2.1, KTAG and TRASDATA)
The Mercedes ACM 2.1 Bench Cable is a professional connection lead for Mercedes-Benz trucks fitted with the Temic ACM2.1 aftertreatment control module. Made for the Dimsport TRASDATA and Alientech KTAG, it gives commercial vehicle workshops a pin-safe read, write and clone connection for fast, repeatable results.
Built for Mercedes-Benz Truck Aftertreatment Work
The Temic ACM2.1 is the aftertreatment control module found across the Mercedes-Benz heavy vehicle range, and it governs the strategy that keeps a truck emissions compliant and earning its keep. This module manages SCR operation, AdBlue dosing, DPF behaviour and the NOx sensor logic that sits at the heart of a modern commercial vehicle. Reaching it cleanly is the single biggest factor between a quick, profitable job and a bent pin or a damaged connector. This cable gives your KTAG or TRASDATA a direct, mechanically secure route into the ACM2.1, so you connect once, connect properly, and get on with the work.
Why a Dedicated Bench Cable Beats Improvised Access
On heavy vehicles the ACM is frequently locked down or heavily restricted over the standard diagnostic port, which is why serious aftertreatment work moves to the bench. The problem with generic pins, flying leads and probe wires is that they load the module connector unevenly, spread the terminals and introduce intermittent contact that shows up halfway through a write. A purpose made cable presents the correct pinout with the correct mechanical fit every time, which protects an expensive module and removes the guesswork. For a workshop turning several trucks a week, that reliability compounds quickly into saved time and fewer comebacks.
A True COBD Replacement for KTAG and TRASDATA
This lead is a direct COBD replacement for the Alientech 144300T117 KTAG cable and the Dimsport F34NTA20 TRASDATA cable, matching the pinout and function of both while offering a durable, workshop ready build. If you already run a KTAG or a TRASDATA bench setup, you can standardise on one dependable cable without paying a premium for the vendor branded original. It plugs straight into standard bench and breakout arrangements, so there is no re-learning and no adapter chain to introduce noise or failure points.
Read, Write and Clone with Confidence
The most common ACM2.1 jobs are a clean read for backup, a verified write, and a full clone when a failed module is swapped for a replacement. This cable supports all three by giving your KTAG or TRASDATA a stable, low resistance path to the ECU. On a clone in particular, a solid physical connection is everything, because you are transferring the complete identity and calibration of the original module into a donor unit, and any dropout mid-transfer risks leaving you with two unusable modules instead of one working truck. A cable built for daily professional use takes that risk off the table.
Direct Temic ACM2.1 Connection
Purpose made to mate with the Mercedes-Benz truck ACM2.1 connector for a secure, repeatable link.
COBD Replacement
Drop-in equivalent for Alientech 144300T117 and Dimsport F34NTA20 at a workshop friendly price.
KTAG and TRASDATA Only
Purpose built for Alientech KTAG and Dimsport TRASDATA bench setups.
Read, Write and Clone Ready
Supports full backup reads, verified writes and complete module cloning on replacement.
Pin-Safe, Durable Build
Correct mechanical fit protects the ECU connector and stands up to daily professional use.
Plug and Play Setup
Drops straight into standard bench and breakout rigs with custom lengths available on request.
| Application | Mercedes-Benz trucks with Temic ACM2.1 ECU |
| Replaces | Alientech 144300T117 (KTAG) / Dimsport F34NTA20 (TRASDATA) |
| Compatible Tools | Alientech KTAG and Dimsport TRASDATA only |
| Functions | Read, Write, Clone |
| Length Options | 2.0 m and full length; custom lengths on request |
| In the Box | 1x Mercedes Truck Temic ACM2.1 Cable (COBD replacement) |
Spread the Cost with Finance
Invest in professional equipment without the upfront outlay. Apply online for a no obligation finance quotation and get a fast decision, so you can put this tool to work in your workshop straight away.
💡 Mobile Eco Tuning Pro Tip:
Before you write anything to a Temic ACM2.1, take and archive a full original read and confirm it is complete, because that untouched backup is your only route home if a clone or replacement goes wrong. Remember these are 24 volt commercial vehicles, so feed the module from a clean, stabilised bench supply and never attempt a long aftertreatment write on a sagging battery. A voltage dip partway through is the fastest way to leave a module unrecoverable, and it is entirely avoidable with steady power and a secure cable. We run this exact process daily at our UK HQ workshop and across our network of 800 plus agents.
