sales@sleemans.com
+44 (0) 1626 778 266
0 £0.00
SHOPPING CART

Rehlko KD425/2 Industrial Diesel Engine

The Rehlko KD425‑2 (KD425/2) is a compact air‑cooled, 4‑stroke diesel delivering 13 kW (17.4 hp) at 3600 rpm and 42 Nm at 2200 rpm. With electric start and direct injection, it’s designed for dependable power in OEM machinery and industrial equipment where simplicity, durability, and straightforward servicing are priorities.
Get a Quote for this Engine

Quick Spec Check

Engine Series:
Industry Type:
Engine Speed:
Power kW:
Max Torque:
Emissions:
KD Series
Industrial
3600 rpm
13
40 @ 2200rpm
ECE R24 (NB)
The Rehlko KD425‑2 is a robust, space‑efficient air‑cooled diesel engine engineered for practical OEM integration and dependable day‑to‑day operation. Rated at 13 kW (17.4 hp) @ 3600 rpm with 42 Nm @ 2200 rpm, it suits applications that need compact diesel power with a straightforward installation package.
Rehlko specifies a four‑stroke design with integral fan air cooling, direct injection, and electric start, making the KD425‑2 a strong option where simplicity and service access matter. The engine’s 851 cm³ displacement and compact dimensions help it fit into tight equipment bays, while the full‑pressure lubrication system with a full‑flow filter supports consistent long‑term operation in working environments.
As with any OEM engine, the safest way to specify or replace is to match the exact engine code and confirm the installation interfaces (mounting arrangement, intake/exhaust routing, electrical connections, and coupling requirements). If you share your application (pump, compressor, power unit, etc.) and any existing engine plate details, we can help confirm the correct KD425‑2 configuration before ordering.
Engine Details
Information on the main core details of the engine
Engine Series

KD Series
Industry Type

Industrial
Engine Perfomance
Engine Speed

3600 rpm
Power kW

13
Max Torque Nm

40 @ 2200rpm
Emissions Compliant
Emissions

ECE R24 (NB)
Design Features
SAE Connection

Non Conventional
Radiator

No
Fan

No
Technical Features
Aspiration

Natural
Cylinders

2
Injection System

DI
Injection Equipment

Mechanical
EGR

No
DOC

No
DPF

No
CAC

No
Physical Characteristics
Engine Length

485mm
Engine Width

464mm
Engine Height

503mm
Engine Weight

63kg (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.