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Superior Diesel’s KSD 1403 Packages

Engineered to Perform. Designed to Integrate. Built to Last.
Superior Diesel’s KSD 1403 Packages Deliver the Best 25-HP Diesel Engine Solutions for OEMs

When performance and reliability matter most, Rehlko’s KSD 1403 stands out as the best 25-hp diesel engine on the market today. Compact, efficient, and emissions compliant (EPA Tier 4 Final / EU Stage V), the KSD 1403 is engineered for OEMs who need power in a tight footprint without compromising durability or ease of integration.

This 3-cylinder diesel engine excels in compact industrial equipment across multiple applications, including mini skid steers, compact loaders, trenchers, boring equipment, pumps, seeders, sprayers, wood chippers, stump grinders, and other 25-horsepower platforms.

At Superior Diesel, we go beyond supplying engines. We provide complete, drop-in-ready engine packages designed to reduce your labor and simplify installation. Whether you need a streamlined factory powerpack or a custom-designed solution from our in-house engineers, we offer four KSD 1403 configurations — all built to deliver the best in class.

KSD 1403 Factory Powerpack

Available in Naturally Aspirated (NA) and Turbocharged (TC) Configurations

Rehlko’s factory powerpack offers unbeatable value for OEMs who need reliable performance and fast integration.

Key Features:

Factory-mounted cooler for consistent temperature control
Integrated air cleaner to optimize airflow
Downward-facing factory muffler with adjustable position
Pre-installed ECU and interface harness
Mounted engine feet for straightforward chassis alignment
Optional Controls Inc controller and key switch (loose or pre-mounted)
Pre-filled with oil and coolant to simplify installation

KSD 1403 Standard Open Power Unit

Available in NA and TC Configurations

Looking for a top-exit exhaust? Our Standard Open Power Unit builds on the factory model with key enhancements tailored for OEMs that require a more durable, top-exit exhaust system.

Additional Feature:

Catalytic converter-style muffler with top-exit exhaust — ideal for compact equipment requiring upward exhaust routing

KSD 1403 Enclosed Power Unit (EPU)

Available in NA and TC Configurations

Protect your investment with a rugged, enclosed design that shields the engine in demanding field environments, from construction sites to remote terrain.

Key Features:

All the benefits of Rehlko’s Factory Open Power Unit
Metal enclosure for protection from dust, debris, and weather
Compatible with either the factory muffler or catalytic converter-style muffler with top-exit exhaust.

KSD 1403 Hydropack

Available in NA and TC Configurations

This configuration is optimized for OEMs with hydraulic applications. This compact package features a hydraulic oil cooler with simplified controls and integration flexibility, making it a go-to option for equipment with hydraulic system needs.

Key Features:

Heavy-duty hydraulic oil cooler for dependable performance
Integrated air cleaner to optimize airflow
Top-exit catalytic converter-style muffler
Pre-installed ECU and interface harness
Mounted engine feet for straightforward chassis alignment
Optional Controls Inc controller and key switch (loose or pre-mounted)
Pre-filled with oil and coolant to simplify installation

Why Choose Superior Diesel?
With decades of diesel engine expertise, Superior Diesel is your trusted source for the best 25-hp diesel engine packages. Our KSD 1403 lineup is engineered for easy integration, reduced labor costs, and long-term reliability — backed by industry-leading support and a commitment to OEM success.

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Our professional staff is ready to assist you with your drivetrain and diesel engine requirements in whatever market you serve. Our skilled engineers can custom design products to fit your specific application needs and our production team is experienced and well versed in application and assembly.