Diesel Specialists Maryborough

Core Diesel is your trusted local workshop for professional diesel servicing and repairs. Based in Maryborough and servicing the entire Fraser Coast area, we work on a wide range of vehicles, including 4WDs, utes, heavy transport vehicles, civil machinery, agricultural equipment, and fleet trucks.

Our team delivers high-quality workmanship, honest advice and practical solutions that keep your vehicle or equipment performing at its best.

Why Our Customers Call Us the Diesel Professional.

Our team brings together years of hands-on experience from various backgrounds. Whether it is diagnostics, repairs, servicing or tuning, we have the knowledge and tools to get the job done right.

Core Diesel is the authorised service agent for Mack, UD and Volvo in the Wide Bay area.

At Core Diesel, we specialise in comprehensive diesel repairs across the Fraser Coast region, offering expert services for both domestic 4×4 vehicles and heavy machinery. With years of industry experience, our team understands the specific needs of tradies, fleet managers, and civil operators who depend on reliable diesel performance every day.

Whether it’s a rugged 4WD used on rural properties or a high-powered excavator at a worksite, we deliver precision diagnostics, fast turnarounds, and long-lasting results. Our facility is equipped to handle everything from routine servicing to complex engine overhauls and hydraulic system repairs.

Our client-first approach means transparent communication, accurate quotes, and flexible scheduling to minimise your downtime. We’re proud to be the go-to diesel repair specialists for civil construction contractors, mining outfits, and regional business fleets.

Vehicles Worked On

Hydraulic Hoses Made

Jobs in Field

Dyno Tunes

Truck Services/ Earth Moving/ Hydraulic Repairs

Our dedicated heavy vehicle workshop is set up to service and repair trucks, trailers, buses, and machinery of all makes and models. We handle hydraulic faults, engine issues, and drivetrain repairs with a fast turnaround time to minimise downtime.

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ECU Remapping/ Dyno Tuning

We provide custom ECU remapping and dyno tuning using Mainline DynoLog. It is a safe and efficient way to improve performance, fuel economy and driveability. Our tuning specialists customise every job to suit your vehicle’s use, whether it is towing, off-road or commercial.

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American Trucks Repairs

We help businesses keep their vehicles on the road with scheduled servicing, safety checks and preventative maintenance tailored to each fleet. Our fleet service plans are flexible and designed to reduce unexpected breakdowns and keep your operations running smoothly.

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American Truck Upgrades

From unlocking hidden power to adding practical and stylish accessories, our technicians deliver upgrades that enhance both form and function, while ensuring your vehicle remains compliant with Australian standards.

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4×4 Suspension Upgrades

We are licensed to provide Queensland roadworthy certificates (safety certificates) for light and heavy vehicles. Our inspections cover brakes, tyres, suspension, steering and all compliance checks to meet state regulations.

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Diesel Carbon Cleaning

Diesel carbon build-up explained! This is the result caused by emission control equipment fitted to all our modern-day diesel engines designed to meet (ADR’s) Australian design regulations.

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