Superior Diesel Inc.

Superior Diesel Inc. Superior Diesel is a leading Value-Added Distributor of John Deere and Rehlko engines and Funk Drivetrain components.

We deliver custom power solutions for diverse applications like generators, water pumps, marine, forestry, and more. Superior Diesel was established in 1977 and is headquartered in Rhinelander, Wisconsin. Our 49,000 square foot full-service facility is proudly placed in the beautiful Northwood’s of Wisconsin. Our second 39,000 square foot full-service facility is located in Seville, OH. Together we are able to provide premium customized value-added packages to the Midwestern United States. Superior Diesel’s key products and services include, but are not limited to:
• Engineered to order modular diesel engine and Drivetrain packages for OEM and other applications.
• Standard open and enclosed engine power units for irrigation, power generation, and industrial applications.
• New and remanufactured replacement engines, repower kits, and “Tier-Up” repower kits for off highway diesel engine applications.
• John Deere engine parts, Funk Drivetrain units & components, and Value-Added components used in our power packages including; cooling systems, oil coolers, exhaust, air intake systems, engine system controls (mechanical and electronic), and control cables.

John Deere Connected Support™ helps JDPS distributors and dealers stay one step ahead by identifying potential issues ea...
10/09/2026

John Deere Connected Support™ helps JDPS distributors and dealers stay one step ahead by identifying potential issues early, connecting with customers proactively, and arriving ready with the right solution.
That's the power of turning machine data into customer uptime.

Curious what proactive support looks like in the real world? Watch the video and see John Deere Connected Support in action.

Link to the Marine video: https://youtu.be/D7fgU_1ftfA?utm_campaign=coschedule&utm_source=facebook_page&utm_medium=Superior%20Diesel%20Inc%2E
Link to the Industrial video: https://youtu.be/7S2Xc4WofwY?utm_campaign=coschedule&utm_source=facebook_page&utm_medium=Superior%20Diesel%20Inc%2E

Contact us to learn more: http://sdiesel.com/?utm_campaign=coschedule&utm_source=facebook_page&utm_medium=Superior%20Diesel%20Inc%2E

Maximize marine uptime with John Deere Connected Support™. Learn ho...

Meet high-output industrial power.Introducing the John Deere JD18X IHR an 18.0L industrial diesel engine built for deman...
10/07/2026

Meet high-output industrial power.

Introducing the John Deere JD18X IHR an 18.0L industrial diesel engine built for demanding off-highway applications that require serious power, torque and long-term durability.

With a rated power range of 522–677 kW (700–908 hp) and up to 4,250 Nm (3,135 lb-ft) of peak torque, the JD18X extends John Deere's industrial power range for heavy-duty equipment where performance and uptime matter most.

Designed with series turbocharging, high-pressure common-rail fuel injection, air-to-air aftercooling and advanced electronic controls, the JD18X is engineered for strong low-speed torque, efficient integration and reliable operation in tough working environments.

Key features:
- 18.0L, 6-cylinder industrial diesel engine
- 522–677 kW (700–908 hp) rated power range
- Up to 4,250 Nm (3,135 lb-ft) peak torque
- Series turbocharging for higher power density
- High-pressure common-rail fuel system
- Rear gear train with optional rear PTO
- Built for durability, serviceability and long operating life

Ideal for powering:
- Heavy-duty industrial equipment
- Mining and material handling applications
- Large agricultural machinery
- Forestry equipment
- Specialty off-highway vehicles
- High-demand power units

Looking for the right engine for your application?

Let's connect.

Superior Diesel
888-333-7376
http://sdiesel.com/?utm_campaign=coschedule&utm_source=facebook_page&utm_medium=Superior%20Diesel%20Inc%2E

Meet compact power built for demanding work.Introducing the John Deere JD4G IHR 3.9L industrial diesel engine—designed t...
09/29/2026

Meet compact power built for demanding work.

Introducing the John Deere JD4G IHR 3.9L industrial diesel engine—designed to deliver more power from a compact package while simplifying integration across a wide range of industrial equipment.

With rated power from 63–129 kW (84–173 hp) and peak torque up to 700 Nm (516 lb-ft), the JD4G IHR combines strong low-speed performance with the flexibility needed for continuous, heavy-duty and intermittent applications.

Designed around performance, uptime and easier installation, the JD4G IHR features a compact 4-cylinder architecture, extended service intervals and a rear gear train that provides quiet operation along with additional auxiliary-drive options.

Key features:
- 3.9L, 4-cylinder industrial diesel engine
- 63–129 kW (84–173 hp) rated power
- Up to 700 Nm (516 lb-ft) peak torque
- Up to 34% torque rise
- High-pressure common-rail fuel system
- Wastegated turbocharger with air-to-air aftercooling
- 750-hour minimum service interval
- EPA Final Tier 4 / EU Stage V emissions compliance

Ideal for applications requiring:
- Strong low-speed torque
- Compact engine packaging
- Continuous or heavy-duty operation
- Flexible OEM equipment integration
- Reliable power in demanding working conditions

More power doesn't have to mean a larger engine. The JD4G IHR delivers John Deere performance in a compact package built to help equipment work harder and more efficiently.

Looking for the right John Deere engine for your application?

Let's connect.

Superior Diesel
888-333-7376
http://sdiesel.com/?utm_campaign=coschedule&utm_source=facebook_page&utm_medium=Superior%20Diesel%20Inc%2E

Power built for the water.The John Deere PowerTech™ 6135SFM85 marine propulsion engine delivers dependable performance, ...
09/18/2026

Power built for the water.

The John Deere PowerTech™ 6135SFM85 marine propulsion engine delivers dependable performance, strong torque and long-term reliability for demanding marine applications.

With power ratings from 317–559 kW (425–750 hp) across M1–M5 duty cycles, the 6135SFM85 gives operators the flexibility to match engine output to the vessel's operating profile, from continuous commercial duty to high-performance applications.

Built around a proven 13.5L, 6-cylinder platform, the 6135SFM85 combines electronic engine management, high-pressure fuel delivery and air-to-seawater aftercooling to provide responsive performance and dependable operation on the water.

Key features:
- 13.5L, 6-cylinder marine diesel engine
- 317–559 kW (425–750 hp) power range
- Rated speeds from 1,800–2,200 rpm
- Turbocharged with air-to-seawater aftercooling
- Electronic Unit Injector (EUI) fuel system
- 4-valve cylinder head for strong airflow and transient response
- Water-cooled exhaust manifold
- Replaceable wet-type cylinder liners for long service life
- EPA Commercial Marine Tier 3 and IMO
- MARPOL Annex VI Tier II compliant

Ideal for powering:
- Commercial workboats
- Crew and service vessels
- Fishing vessels
- Offshore applications
- Sportfishing and high-performance vessels
- Marine repower projects

When your vessel depends on reliable power day after day, the 6135SFM85 delivers the performance, durability and confidence to keep moving.

Planning a new build or marine repower project?

Let's connect.

Superior Diesel
888-333-7376
http://sdiesel.com/?utm_campaign=coschedule&utm_source=facebook_page&utm_medium=Superior%20Diesel%20Inc%2E

Meet compact diesel power built to work.Introducing the Rehlko KDW 1003 a compact 3-cylinder diesel engine designed to d...
09/17/2026

Meet compact diesel power built to work.

Introducing the Rehlko KDW 1003 a compact 3-cylinder diesel engine designed to deliver dependable performance, low weight and easy integration across a wide range of industrial equipment.

With power ratings up to 18.8 kW (25.2 hp) at 3,600 rpm, the KDW 1003 combines a compact 1.03L platform with proven mechanical simplicity for applications where space, reliability and operating efficiency matter.

Designed around durability and versatility, the KDW 1003 features naturally aspirated performance, indirect fuel injection and liquid cooling—providing a practical power solution for equipment that needs to perform day after day.

Key features:
- 1.03L, 3-cylinder diesel engine
- Up to 18.8 kW (25.2 hp) at 3,600 rpm
- Naturally aspirated design
- Indirect fuel injection
- Liquid-cooled system
- Compact dimensions and low weight
- 85 kg (187 lb) dry weight
- Available configurations meeting EU Stage V and U.S.
- Tier 4 Final emissions requirements
- Designed for low noise and easy equipment integration

Ideal for applications such as:
- Mini excavators and compact loaders
- Wood chippers and construction equipment
- Aerial platforms
- Generator sets
- Agricultural equipment
- Sweepers and utility vehicles
- Pressure washers and refrigeration units

Compact, straightforward and built for versatility, the KDW 1003 delivers dependable diesel power for equipment that needs to get the job done.

Looking for the right engine for your application?

Let's connect.

Superior Diesel
888-333-7376
http://sdiesel.com/?utm_campaign=coschedule&utm_source=facebook_page&utm_medium=Superior%20Diesel%20Inc%2E

Meet compact power made for demanding equipment.Introducing the Rehlko KDW 702 a compact 2-cylinder diesel engine engine...
09/14/2026

Meet compact power made for demanding equipment.

Introducing the Rehlko KDW 702 a compact 2-cylinder diesel engine engineered to deliver dependable performance, low weight and easy integration across a wide range of industrial applications.

Delivering up to 11.6 kW (15.5 hp) at 3,600 rpm, the KDW 702 combines a compact 686 cc platform with the durability and efficiency needed for equipment where space and weight matter.

Designed around simplicity and reliability, the KDW 702 combines indirect fuel injection, liquid cooling and naturally aspirated performance with a compact architecture built for consistent operation and straightforward equipment integration.

Key features:
- 686 cc, 2-cylinder diesel engine
- Up to 11.6 kW (15.5 hp) at 3,600 rpm
- Naturally aspirated design
- Indirect fuel injection
- Liquid-cooled system
- Compact 66 kg (145.5 lb) dry weight
- Low-noise, low-weight design
- Available configurations meeting EU Stage V and U.S.
- Tier 4 Final emissions requirements

Ideal for applications such as:
- Mini excavators
- Compaction rollers and vibrating plates
- Generator sets
- Motor sweepers
- Aerial platforms
- Compact utility and recreational vehicles

Compact, efficient and built to work, the KDW 702 delivers dependable diesel power without taking up more space than necessary.

Looking for the right engine for your application?

Let's connect.

Superior Diesel
888-333-7376
http://sdiesel.com/?utm_campaign=coschedule&utm_source=facebook_page&utm_medium=Superior%20Diesel%20Inc%2E

Explore the latest John Deere marine engines, now available to order!They come equipped with John Deere Connected Suppor...
09/11/2026

Explore the latest John Deere marine engines, now available to order!

They come equipped with John Deere Connected Support TM, enabling real-time engine monitoring, proactive maintenance insights, and remote diagnostics. For customers on the water, this is a true game changer!

Benefit from quieter, smoother operation, with responsive acceleration and dependable engine performance.

Contact us to learn more: https://sdiesel.com/?utm_campaign=coschedule&utm_source=facebook_page&utm_medium=Superior%20Diesel%20Inc%2E

Our offices will be closed Monday, September 7th in observance of Labor Day.From the technicians keeping engines running...
09/03/2026

Our offices will be closed Monday, September 7th in observance of Labor Day.

From the technicians keeping engines running to the operators keeping equipment moving, we're proud to support the hardworking people who power our industries every day.

Have a safe and well-earned Labor Day weekend!

Protect your engine. Protect your investment.Keep your John Deere engine covered with John Deere PowerGard Protection.Wi...
08/28/2026

Protect your engine. Protect your investment.

Keep your John Deere engine covered with John Deere PowerGard Protection.

With flexible coverage options, you can choose the coverage length and total hours that fit your ownership plans and estimated usage—giving you added protection and peace of mind long after your standard warranty ends.

Configure your coverage now and get an instant quote: http://sdiesel.com/?utm_campaign=coschedule&utm_source=facebook_page&utm_medium=Superior%20Diesel%20Inc%2E - John Deere Extended Warranty

Our marine team recently accompanied our marine service dealers to Waterloo, Iowa, for the John Deere North American Mar...
08/26/2026

Our marine team recently accompanied our marine service dealers to Waterloo, Iowa, for the John Deere North American Marine Dealer Event. It was a great opportunity to get a closer look at the technology and meet the people behind the engines we proudly support.

One of the highlights was touring the facility and seeing the new JD14 and JD18 marine engines being built firsthand. Watching the assembly process and seeing the attention to detail that goes into each engine gave us an even greater appreciation for the quality and reliability we deliver to our customers.

We're especially excited about expanding the John Deere marine power range up to 588 kW (789 hp). This opens the door for us to support even more demanding commercial applications, including workboats, tugs, and commercial fishing vessels.

Our dealers also had the opportunity to learn more about John Deere Connected Support and how it can help us provide a more proactive level of service. Real-time engine health monitoring and remote diagnostics give our dealers better tools to help customers troubleshoot and keep their vessels operating when it matters most.

We would like to thank our dealers who were able to attend and the John Deere team in Waterloo for hosting us and sharing your expertise. We're excited to bring what we learned back to our customers and continue delivering A New Era in Power.

Address

3250 S Fox Ranch Road
Rhinelander, WI
54501

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

(715) 365-0500

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