Hewartson Diesel Services Marine Diesel Done Right !

Fast-response diagnostics, servicing and repairs across Brisbane, the Gold Coast and Sunshine Coast.

ABOUT US

WHO WE ARE ?

Hewartson Diesel Services is a locally owned marine diesel mechanic business. We pride ourselves on providing prompt, reliable, high-quality work and we continually strive to exceed expectations on every job. Our growth has been built on strong communication, honest advice, and workmanship you can trust, with a focus on keeping boat owners and fleets running safely and reliably.

WHY CHOOSE US?

Caterpillar Marine Diesel Expertise

We specialise exclusively in Caterpillar marine diesel engines, offering unmatched knowledge and precision. From diagnostics to rebuilds, our expertise ensures your engine gets the specialist attention it deserves.

Mobile Service Across SEQ

Based in Brisbane and servicing the Sunshine Coast and Gold Coast, we bring our tools, experience, and solutions directly to you—reducing downtime and getting you back on the water faster.

Quality You Can Trust

We take pride in our workmanship, using only genuine parts and proven methods. Our commitment to reliability, transparency, and long-term engine health sets us apart from the rest.

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Our Guarantee

At Cargenics Detailing, we are committed to providing our customers with the highest quality car detailing services. We are so confident in the quality of our work that we offer a 100% satisfaction guarantee. If for any reason you are not completely satisfied with our services, we will make it right, no questions asked.

In fact, if we cannot meet your expectations, we will not charge you for our services. We believe in the quality of our work and stand behind it with our guarantee.

SERVICES

Reliable Marine Engine Services

Diagnostics

Don’t waste weeks guessing what’s wrong with your marine diesel engine. Our advanced diagnostic tools and years of hands-on experience let us identify the root cause quickly — whether it’s fuel, cooling, electrical, or mechanical. The sooner we find it, the sooner you’re back on the water.

Servicing

Regular servicing is the secret to a smooth, reliable, and efficient marine diesel engine. From oil and filter changes to full system inspections, we follow manufacturer guidelines and go the extra mile to prevent costly breakdowns before they happen.

Rebuilds

When repairs aren’t enough, we specialise in complete engine rebuilds that bring your diesel motor back to its prime. Every component is inspected, restored, or replaced with precision, ensuring maximum performance, reliability, and longevity for years to come.

Annual Service Packages

Keeping Your Marine Engine in Peak Condition – Year After Year

Regular servicing is the key to reliability, performance and avoiding costly breakdowns at sea. Our Annual Service Packages are designed to give your marine diesel engine, whether Caterpillar or another leading brand, the attention it deserves with every detail covered by specialist hands.

Marine Reliability Plan – Annual Marine Diesel Protection

For serious boat owners who want reliability, performance, and peace of mind.

Owners of Caterpillar, Volvo Penta, Cummins, Yanmar, Kubota, and other large marine diesel engines in cruisers and powerboats. Not designed for light sailing yachts — this plan is for people who demand uptime and a diesel expert on call.