About Us

About Baileys Diesel Group

In 1972, Gregory Bailey, Gillian and family started a diesel fuel injection repair business in Sydney, New South Wales, Australia. Today, CEO Stephen Bailey provides all innovation, improvements and direction of all products, including research and development, within the Baileys Diesel Group.


With over 50 years of expertise and knowledge, the Baileys Diesel Group is an industry world leader, #1 diesel combustion efficiency and technology. We actively participate in servicing, maintaining and improving industrial, rail, marine, mining, off-highway and on-road vehicles.


Baileys Diesel Group operates from the Baileys Diesel Technology Centre in Wollongong, New South Wales. This is a state-of-the-art, 1500m² all-inclusive facility south of Sydney.

Not only do we offer the technical solution, but then also assist our clients to measure it, maintain it and improve it.

Baileys Diesel Group focuses on reducing the fuel expended during combustion, reducing the carbon footprint by actively participating in reducing greenhouse gases and emissions, and reducing overall costs, downtime, and engine maintenance.


We are aligned with the United Nations 2030 Agenda's views and commitment to reducing these international emissions targets.


The Baileys Diesel Group knows our purpose; to serve our clients by the ability to compare, improve and validate to international standards. We deliver quality results and superior client service in everything we undertake.

Our Approach

At Baileys Diesel Group, we explain maintenance procedures and ways to improve your diesel engines.


Baileys Diesel Group has diversified into turbochargers, ongoing research and development (the family has patented 4 innovative products), training, accurate fuel consumption metering, real-time engine diagnostics and logistical solutions.

Our Guarantee

Baileys Diesel Group are committed to delivering solutions, and all of our products are backed by our warranty policy. Our customer service team and technical advisors can assist you with your questions on diesel engines and combustion. We can assist with savings on fuel, emissions, increase torque and ensure your engine is running at optimum efficiency.

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Our Vision

To assist clients to reduce all fuel consumption by applying efficient diesel combustion whilst reducing carbon emissions, reducing environmental and social impacts.

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Our Values

Environmental: actively reduce greenhouse gases and emissions. Ethical: consistently apply strong moral and ethical principles. Commitment: measure, compare, improve, and validate. Efficiency: innovate in all areas of development, technology, and manufacturing. Operations: support sound project management and methodology principles.

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Our Mission

Baileys Diesel Group is proudly #1 in combustion efficiency. We provide quality diesel performance products and solutions with stringent quality assurance and a focus on enhancing Sustainable Development goals.

What They Say About Our Diesel Parts and Solutions

"This crew go above and beyond in everything they do. Service, pricing, product range, and advice. I have come across none better anywhere in the world, and I have worked on diesels on most continents (not Antarctica)."

David Carpenter

"Competitive pricing, the warranty they give on their injectors and the fuel savings you gain from them designed and tested in house."

Dino Ronchi

"Great service ordered one morning received the next day traffic service."

Duane Monckton

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Partner with the Leaders in Diesel Efficiency

Enhance performance, reduce emissions, and optimise your diesel systems with our proven expertise.

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