STEINBAUER application

Challenger MT425B

4.4L CAT C4.4 (CR)

STEINBAUER performance module for the Challenger MT425B 4.4L CAT C4.4 (CR), designed to provide increased power and torque while retaining the original ECU programming and factory engine safeguards.

Key benefits

  • Up to +25% power and torque increase, depending on application.
  • No ECU software overwrite — the STEINBAUER system works alongside the original engine management.
  • Injection duration module developed to add performance without generic one-size-fits-all mapping.
  • Removable solution that can be removed if required.
  • Application-specific development for the individual engine and vehicle or machine application.
STEINBAUER Performance comparison
Power (BHP)
600 1,000 1,400 1,800 2,200 BHP Engine speed (RPM)
Illustrative agricultural engine-speed curve
Standard 64 BHP
STEINBAUER 80 BHP
+16 BHP

STEINBAUER Technology

  • External ECU technology — Works alongside the original engine management system without permanently rewriting the factory ECU software.
  • Load-dependent performance — Additional power and torque are delivered progressively as engine demand increases.
  • Application-specific calibration — Developed specifically for the individual engine and application rather than using a generic universal setting.

Illustrative simulated performance graphic based on published application data. Curves are illustrative and are not measured dyno traces.

Vehicle specification

Vehicle details

Manufacturer
Challenger
Model
MT425B
Engine
4.4L CAT C4.4 (CR)
Displacement
4,400 cc
Steinbauer specification

STEINBAUER Module details

Part number
240159
Installation
Plug-in
Availability
Available
Engine management
Factory ECU retained
Module Warranty (3 years upon registration)
1 year

Installation guides

Installation instructions for STEINBAUER part number 240159 .

Login required. Installation guides are available to registered STEINBAUER customers, dealers and administrators.
240159 PDF installation guide · EN Login to download
Power and torque upgrade

Challenger MT425B tuning and power increase

The STEINBAUER Power Module is designed for drivers and operators looking for a Challenger MT425B power increase without replacing the factory ECU software. The module works alongside the original engine management system and can be removed to return the vehicle or machine to its standard configuration.

For this application, published performance data shows power increasing from 64 BHP to 80 BHP.

If you are searching for a Challenger MT425B tuning module, this page contains the compatible STEINBAUER part number, installation information, performance figures and available accessories for this exact application.

Explore more

Related Challenger applications

View all MT425B applications →
Part 220022 Challenger MT425B 4.4L CAT C4.4 (VP44) 64 → 80 BHP View application → Part 230115 Challenger 1038 12.4L Tier 4 / Tier 4F 350 → 437 BHP View application → Part 230115 Challenger 1042 12.4L Tier 4 / Tier 4F 386 → 483 BHP View application → Part 230115 Challenger 1046 12.4L Tier 4 / Tier 4F 421 → 526 BHP View application → Part 230115 Challenger 1050 12.4L Tier 4 / Tier 4F 453 → 566 BHP View application → Part in prep. Challenger 475B 6.6L CR 101 → 126 BHP View application →
Why choose STEINBAUER?

Intelligent performance technology

More power

Increased performance where applicable for stronger acceleration and improved working capability.

More torque

Improved pulling power throughout the usable engine speed range.

Safe and reliable

Original ECU programming and factory engine safety parameters remain active.

Removable installation

The vehicle or machine can be returned to its original factory configuration.