Heavy Automatics Sydney

Australia's most trusted transmissions specialist
Book a FREE diagnosis

Keeping your vehicle in service is our highest priority.

Work with the best so you can go back to work

1500 Square Meter facility
16 High Access Work Bays
$250k in Parts Inventory
Onsite Hydraulic Engineer
Hydraulic System Design
Mobile Fleet Service Technicians



The team here at Heavy Automatics and Heavy Hydraulics has been servicing the Greater Sydney Region for the past 20 years and counting. As a family business, we’re proud to be continuing our legacy of bringing international expertise to your vehicles and machinery with a friendly and reliable customer experience, every time.

With nearly 100 dedicated staff members Australia wide, we launched Heavy Hydraulics in Sydney in 2016! Designed from the beginning to complement the Allison product line, we are now able to support our customers as a combined Allison Transmission Distributor and Hydraulic Outlet. As Australia’s largest Allison Distributor, our whole team were incredibly proud to be one of only 5 distributors globally, to receive Allison’s coveted GOLD PRP Customer Service Award in 2020!


Purpose Based Facility, located just off M5 & M7


Awarded coveted GOLD Allison Global Customer Service Award


Change Over Allison Transmissions Available


Highly skilled specialists mean you’re back on the road ASAP


Extensive Parts Inventory with 90%^ First-Pick strike rate


50+ years of skilled hydraulic experienced staff, ready for anything

Our Facilities


Our state-of-the-art, purpose based Sydney Facility spans 1500 square meters, with 16 High Access work bays, catering for every need in the diagnosis, service and repair of Allison Transmissions and Hydraulics – backed with a quarter of a million dollars in parts inventory and an onsite Hydraulic Engineer to plan, design and oversee all hydraulic service and fit-outs!

No matter if you bring us trucks, cranes, buses, emergency equipment or landscaping equipment, we can help you stay on the road and on the job. Our highly skilled team brings to the table over 50 years of experience – with an astounding 90%^ First-Pick strike rate on new parts!

Find your nearest dealer!


We are proud to have 5 state-of-the-art, purpose based facilities across Australia – with capabilities of supporting remote teams with advice and parts nationwide. When you need help with your Allison Transmission or hydraulic system, whether it be service, repair or design – get in touch today! We’re Heavy and we’re here to help.


58 Lyn Parade,
Prestons NSW 2170


(02) 8783 6255