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Rehlko KDI-TCP 3404E5/22E Industrial Diesel Engine

Rehlko KDI-TCP 3404E5/22E is a 4-cylinder industrial diesel engine designed for demanding off-highway equipment and OEM power packs, supplied with UK technical support and fast quoting.
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Quick Spec Check

Engine Series:
Industry Type:
Engine Speed:
Power kW:
Max Torque:
Emissions:
KDI Series
Industrial
2200 rpm
90
550 @ 1400rpm
EU STAGE IV, US TIER4 FINAL
The Rehlko KDI-TCP 3404E5/22E is a KDI-series 4-cylinder industrial diesel engine variant built for modern non-road machinery and packaged equipment where power density, durability and service access matter. It’s typically specified by OEMs and rebuilders who need a proven engine platform for continuous or heavy-duty cycles, with a configuration that supports straightforward integration into compact engine bays and power units.
If you’re replacing an existing KDI 3404 platform engine, the “E5/22E” designation is the key detail for matching the correct build specification and supply package. Share your current engine plate details (and the application), and we can help confirm the correct variant, ancillaries and installation requirements before quoting.
We can supply the engine in the configuration you need for your equipment build or replacement project, backed by practical UK support for selection, installation and after-sales.
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

90
Max Torque Nm

550 @ 1400rpm
Emissions Compliant
Emissions

EU STAGE IV, US TIER4 FINAL
Design Features
SAE Connection

SAE3/11.5
Radiator

Yes
Fan

Yes
Technical Features
Aspiration

Turbo Aftercooled
Cylinders

4
Injection System

DI
Injection Equipment

HPCR
EGR

No
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

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Keep your engine running right

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

Parts List

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Applications

The Rehlko KDI-TCP 3404E5/22E is commonly used in industrial and off-highway equipment where a compact 4-cylinder diesel engine is required for dependable, high-utilisation operation.
Typical applications include:
  • Hydraulic power units (HPUs) and hydraulic power packs
  • Air compressors and compressed-air power units
  • Pumps and packaged pumping sets
  • Construction and utility equipment (OEM builds and repower)
  • Agricultural and land-management machinery
  • Industrial machinery and equipment packages
It’s particularly relevant for equipment that spends much of its time working in the mid‑range under load, where torque delivery and correct aftertreatment integration influence uptime. In both new builds and replacements, matching the exact variant code is essential because closely related KDI 1903 variants can differ by emissions configuration and calibration.
It’s particularly relevant for machines that operate for long periods under load, where torque delivery, thermal management, and correct aftertreatment packaging influence uptime. In both new builds and replacements, matching the exact variant code is essential to avoid configuration and fitment issues.
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.