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Rehlko KDI-TCN 3404E5/22 Industrial Diesel Engine

The Rehlko KDI‑TCN 3404E5/22 is a compact 4‑cylinder turbo common‑rail diesel engine rated at 55.4 kW (74 hp) at 2600 rpm, configured for EU Stage V applications. It’s a strong choice for OEM machinery and industrial equipment that need modern emissions compliance, dependable working power, and a packaging-friendly engine platform with long-term service support.
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Quick Spec Check

Engine Series:
Industry Type:
Engine Speed:
Power kW:
Max Torque:
Emissions:
KDI Series
Industrial
2200 rpm
55.4
465 @ 1100rpm
EU STAGE V, US TIER4 FINAL
The Rehlko KDI‑TCN 3404E5/22 sits within Rehlko’s KDI 3404 engine family and delivers 55.4 kW (74 hp) @ 2600 rpm from a compact 4‑cylinder turbo common‑rail platform. This variant is specified for EU Stage V, making it a practical option for equipment builders and operators who need a modern diesel engine that aligns with current emissions requirements while maintaining strong, usable output for real duty cycles.
For OEMs, the KDI 3404 platform balances performance with integration practicality — a compact footprint, clear variant identification, and a well-supported engine family that helps keep engineering, procurement, and service aligned. The 4‑cylinder layout supports smooth operation for steady-duty applications, while turbocharging and common‑rail injection help maintain responsive performance under load.
If you’re replacing an older engine or specifying for a new build, match the exact 3404E5/22 variant and confirm the installation package (cooling capacity, intake/exhaust routing, mounting points, and electrical interfaces). Share your engine plate details and application and we’ll help confirm the correct match before ordering.
Engine Details
Information on the main core details of the engine
Engine Series

KDI Series
Industry Type

Industrial
Engine Perfomance
Engine Speed

2200 rpm
Power kW

55.4
Max Torque Nm

465 @ 1100rpm
Emissions Compliant
Emissions

EU STAGE V, US TIER4 FINAL
Design Features
SAE Connection

Options Available
Radiator

Yes
Fan

Yes
Technical Features
Aspiration

Turbo Aftercooled
Cylinders

4
Injection System

DI
Injection Equipment

HPCR
EGR

Yes
DOC

Yes
DPF

Yes
CAC

Yes
Physical Characteristics
Engine Length

726mm
Engine Width

576mm
Engine Height

816mm
Engine Weight

394kg (Dry)

Technical Documents

Technical Datasheet

Parts & Warranty

PROTECT YOUR INVESTMENT

Keep your engine running right

Troubleshoot issues, stay on top of maintenance, buy replacement parts, and get warranty information

Parts List

Applications

The Rehlko KD425‑2 is well suited to compact industrial and OEM equipment where reliable diesel power and straightforward maintenance are key. Typical applications include small power units, pumps, compressors, and specialist machinery operating in demanding environments where an air‑cooled engine simplifies installation and reduces cooling-system complexity.
With 13 kW at 3600 rpm and usable torque at working speeds, it fits steady-duty and intermittent-duty roles where packaging space is limited and service access is important. For best results, ensure the engine is correctly matched to the duty cycle and driven load, and confirm mounting and coupling details for a clean installation.
Because KDI 3404 variants can differ materially by emissions package and calibration (even when the base engine is similar), matching the exact 3404E5/22C code is essential in both new builds and replacements to avoid configuration and fitment issues.