M104 AMG 3.4-Liter 24v Engine & 722.5 5-Speed Automatic Transmission

Offered here is a rare and highly desirable AMG M104 3.4-Liter 24-Valve Inline-6 Engine paired with the 722.5 5-Speed Automatic Transmission, a complete performance drivetrain package from the golden era of AMG tuning.

Based on the legendary Mercedes-Benz M104 platform, this AMG-enhanced 3.4L variant represents one of the most respected naturally aspirated straight-six builds of the 1990s. Known for its smooth power delivery, high-revving character, and robust engineering, the AMG 3.4 delivers both refinement and performance in equal measure.

Paired with the durable Mercedes-Benz 722.5 5-speed automatic transmission, this drivetrain package offers improved gearing over earlier 4-speed units, enhancing highway drivability and overall responsiveness.

AMG 3.4L M104 – Performance Heritage

The AMG 3.4-liter conversion was a significant upgrade over the standard 3.2-liter M104 engine. Typical AMG enhancements included:

• Increased displacement to 3.4 liters

• AMG-specific camshaft tuning

• Optimized cylinder head work

• Revised engine management calibration

• Higher output and stronger midrange torque

The result is a refined yet aggressive inline-six with a distinctive AMG character — smooth at idle, eager at higher RPMs, and unmistakably mechanical in sound.

Key Features & Benefits

• Genuine AMG 3.4L M104 inline-6 engine

• 24-valve DOHC configuration

• Naturally aspirated performance build

• Paired with 722.5 5-speed automatic transmission

• Improved gearing over 4-speed units

• Ideal for period-correct AMG restorations

• Strong collector and investment appeal

• Suitable for swap or restoration projects

Compatibility & Ideal Applications

The AMG 3.4 M104 drivetrain was commonly associated with:

• W124 E-Class platforms

• W201 190E AMG builds

• Early W202 performance applications

• Select export AMG conversions

Compatible chassis may include:

• Mercedes-Benz W124

• Mercedes-Benz W201

• Early Mercedes-Benz W202

(Professional fitment verification recommended.)

Why This Drivetrain Matters

The AMG 3.4 M104 represents a transitional moment in AMG history — blending hand-built tuning philosophy with Mercedes-Benz engineering excellence.

Benefits include:

• Increased horsepower over stock 3.2L

• Strong midrange torque

• Classic AMG inline-six sound

• Reliable mechanical architecture

• Strong enthusiast and collector demand

As pre-merger and early AMG mechanical components continue to rise in value, original engines and transmissions are becoming increasingly difficult to source.

Ideal For:

• Period-correct AMG restorations

• High-end W124 builds

• 190E AMG recreations

• Engine swap projects

• Collector-grade performance builds

Investment & Collector Value

Complete AMG drivetrain packages are far rarer than cosmetic upgrades. An authentic AMG 3.4 engine with its matching 722.5 transmission offers:

• Strong long-term appreciation potential

• Authenticity for serious builds

• Increased resale value

• Historical significance in AMG’s development

This is not simply an engine swap — it is a piece of 1990s AMG performance history.

Secure a Rare AMG Powertrain

If you are building a true AMG-spec Mercedes or restoring a period-correct performance icon, this AMG M104 3.4-Liter Engine & 722.5 5-Speed Automatic Transmission package delivers heritage, power, and exclusivity.

Rarely available and highly desirable — secure it while available.