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Rehlko KDI-TCV 3404U4/22B Industrial Diesel Engine

KDI‑TCN-3404E5-22-diesel-engine
KDI‑TCN-3404E5-22-diesel-engine
The Rehlko KDI‑TCV 3404U4/22B is a compact 4‑cylinder diesel engine rated at 75 kW (101 hp) at 2200 rpm with 475 Nm at 1400 rpm. Configured for EU Stage IV / US Tier 4 Final with a U4 (EGR + DOC + SCR) emissions system, it’s ideal for OEM machinery that needs strong mid‑range torque, dependable performance, and accurate variant matching for specification or replacement.
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Quick Spec Check

Engine Series:
Industry Type:
Engine Speed:
Power kW:
Max Torque:
Emissions:
KDI Series
Industrial
2200 rpm
75
475 @ 1500rpm
EU STAGE IV, US TIER4 FINAL
The Rehlko KDI‑TCV 3404U4/22B is a KDI 3404-series diesel engine variant designed for demanding equipment where usable torque and controlled power delivery matter more than chasing high rpm. In Rehlko’s documentation, this model is rated at 75 kW (101 hp) @ 2200 rpm and produces 475 Nm @ 1400 rpm, making it a strong fit for machines that spend most of their time working under load in the mid-range.
This variant is documented for EU Stage IV / US Tier 4 Final compliance and uses the U4 emissions management package (EGR + DOC + SCR). For OEMs, the benefit is a clearly defined engine configuration with a known emissions architecture and a power/torque profile that matches real-duty-cycle requirements. For operators and service teams, accurate variant identification helps keep parts ordering, service procedures, and long-term maintenance aligned.
The U4 engines rely on correct installation packaging; it’s important to confirm the full integration details — cooling capacity, exhaust/aftertreatment routing, mounting points, and electrical interfaces. Share your application and engine plate details 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

75
Max Torque Nm

475 @ 1500rpm
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

Yes
DOC

Yes
DPF

No
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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Parts List

Applications

The Rehlko KDI‑TCV 3404U4/22B is well suited to industrial and mobile machinery that needs dependable torque at working speeds — 475 Nm at 1400 rpm — with output rated at 75 kW at 2200 rpm. Typical applications include construction and utility equipment, industrial power units, pumps, compressors, and specialist OEM machinery where steady-duty performance and load response are priorities.
It’s particularly relevant where EU Stage IV / US Tier 4 Final compliance is required and the machine layout must accommodate the U4 (EGR + DOC + SCR) emissions system. In both new builds and replacements, matching the exact variant code is essential because closely related KDI 3404 variants can differ materially in output and configuration, even when emissions compliance appears similar.
It’s also a practical choice where EU Stage IV / US Tier 4 Final compliance is required, as the U4 (EGR + DOC + SCR) emissions system needs to be integrated correctly into the machine’s cooling and exhaust layout. In both new builds and replacements, matching the exact variant code helps avoid configuration mismatches and ensures the engine performs as expected in the real duty cycle.
It’s particularly relevant for OEM builds that must meet current regulatory requirements while keeping the engine package compact and serviceable. Correct selection comes down to duty cycle, cooling pack sizing, and ensuring the installation interfaces match the machine. Because KDI 3404 variants can share similar headline power, matching the exact variant code (E5/22) helps avoid configuration mismatches during replacement or procurement.