Diesel Repair in Sussex, WI

Living in Sussex, WI, you know how vital a reliable diesel truck is for your daily routines, whether it's commuting or tackling heavy-duty tasks. When your truck needs attention, Ryan's Diesel Service is here to alleviate your concerns, offering a wide range of services tailored to keep your vehicle in prime condition. From engine overhauls and fuel system upgrades to comprehensive drivetrain repairs, our experts ensure that your diesel is running smoothly and efficiently. For added convenience, our mobile service truck can come to your location for simple repairs, minimizing any disruption to your schedule. With our commitment to quality and your satisfaction, you can trust that your diesel repairs are in capable hands with Ryan’s Diesel Service.

High End Diesel Products Is Our Specialty

Ryan’s Diesel Service is no stranger when it comes to the manufacturing of high-end diesel products.

Learn more about us HERE

Warranties on Our Turbos

Outlined on product pages and HERE

All Turbos Are Manufactured in House

We believe all products should be manufactured in-house to maintain high levels of quality control.

Our Customers Love Us

Over 100 Reviews on google with a 5 star rating. View HERE

High End Machining

We currently have a HAAS VF4 5-axis machining center which runs a fair majority of our products. We also have a HAAS TL-1 lathe.

Turbo balancing is all done in-house on either our West Coast Balancer WCB30 or CWT industries balancer.

Diesel Repair Services – Your Trusted Diesel Repair Shop in Wisconsin

At Ryan’s Diesel Service, we specialize in comprehensive diesel repair and maintenance for light and medium-duty diesel trucks and vehicles. With over 15 years of experience serving Southeastern Wisconsin, our ASE-level technicians deliver honest diagnostics, dependable repairs, and performance-driven service you can count on.

Whether you’re dealing with a hard-to-diagnose engine issue or need routine diesel system maintenance, our team has the expertise and equipment to keep your diesel running strong.

What We Repair

We provide a full suite of diesel repair services, including:

  • Engine and Drivetrain Repair
  • Diesel engine diagnostics and repair
  • Fuel system service, tuning, and injector replacement
  • Turbocharger replacement, rebuilds, and upgrades
  • Engine swaps and rebuilds

Diesel Performance & Upgrades

  • Performance enhancements and tuning
  • Drop-in turbos and custom builds
  • Power delivery optimization

Suspension, Transmission & More

  • Transmission diagnostics and repair
  • Suspension and drivetrain upgrades
  • Electrical system troubleshooting

Advanced Diagnostics

Our shop uses state-of-the-art tools to pinpoint performance issues fast- saving you time and money on unnecessary repairs.

Why Choose Ryan’s Diesel Service?

Choosing Ryan's Diesel in Sussex, WI, means partnering with a business deeply rooted in the local community, where every repair reflects our commitment to our neighbors. Our skilled technicians bring years of specialized experience, ensuring your newer diesel trucks receive the highest quality service, whether it’s an engine overhaul or a complex fuel system upgrade. We provide comprehensive solutions, including drivetrain repairs and turbocharger installations tailored for both stock and race applications, guaranteeing that your vehicle runs efficiently and reliably.

With our mobile service truck, we can come to you for simple repairs, minimizing downtime and maximizing convenience. Additionally, we offer thorough Department of Transportation inspections, so you can hit the road with confidence. Our customer-centric approach is reinforced by our transparent service promises and competitive warranties on parts and labor, ensuring that you receive unrivaled value and peace of mind. Experience the difference that dedicated local service can make for your diesel needs.

Contact Us

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