Kohler INDUSTRIAL ENGINES
In ProductionKohler KSD1403NA
KSD Series
Rehlko/Kohler KSD1403NA 1.391 L naturally aspirated inline-3 diesel engine with electronically managed indirect common-rail injection. Rehlko publishes 18.9 kW Stage V output and 18.4 kW Tier 4 Final output at 3000 RPM. EPA annual certification data separately lists the KSD-NATG 1403/18 generator trim at 17 kW and 1800 RPM; no generator electrical output is inferred from that mechanical rating.
Cylinders / Config
L3
Displacement
1.391 L
Mechanical & Electrical Specifications
| Brand | Kohler |
| Model | KSD1403NA |
| Series | KSD Series |
| Configuration | L3 |
| Cylinders | 3 |
| Displacement | 1.391 L |
| Dry Weight | 121 kg |
| Dimensions (L×W×H) | 482 × 418 × 552 mm |
| Fuel Type | Diesel/HVO |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Euro Stage V / U.S. EPA Final Tier 4 |
| Certifications | EU Stage V, U.S. EPA Tier 4 Final, CARB, China IV |
| Country of Origin | Italy |
| Year Introduced | 2023 |
Frequently Asked Questions
What is the maximum power output of the Kohler KSD1403NA?
The Kohler KSD1403NA has a maximum mechanical output of 18.9 kW at 2,200 rpm. This is a variable-speed off-road rating, not a fixed-speed generator-set rating.
What fuel does the Kohler KSD1403NA use?
The Kohler KSD1403NA is a diesel variable-speed industrial engine.
What is the displacement and cylinder configuration of the KSD1403NA?
The Kohler KSD1403NA is an inline-3 (3-cylinder) engine with a displacement of 1.391 L.
What emissions standard does the KSD1403NA meet?
The Kohler KSD1403NA is certified to Euro Stage V / U.S. EPA Final Tier 4 emissions standards.
Is the Kohler KSD1403NA still in production?
Yes — the Kohler KSD1403NA is a current production model.
Is a datasheet available for the KSD1403NA?
Yes — an official Kohler datasheet for the Kohler KSD1403NA can be downloaded from this page.