repairs & reconditioning 

Hornsby Differential & Gearbox Specialists

35 + years of experience

Differential Units and Manual Gearbox Repairs Hornsby


Here at Hornsby Differential & Gearbox Specialists, we are passionate about providing expert gearbox and differential repairs to all manual vehicles. Our highly skilled team of differential and gearbox specialists have more than 35 years of expertise in all aspects of repairs, reconditioning and modifications of all gearbox and differential units. Based in Leighton Place in Hornsby, our differential repairs workshop is easily accessible for locals in the Upper North Shore of Sydney. Our team of experts pride themselves on our exceptional workmanship, customer service and state-of-the-art equipment.

Precision engineering tools enable us to deliver reliable and cost-effective repairs to gearboxes and differential units. We pass those savings on to you to deliver the highest quality repairs and reconditioning of gearboxes and differential units at affordable prices. We extend our differential unit repairs and gearbox repairs to all manual vehicle makes and models, including front and rear wheel drives, 4WD and light commercial vehicles. For differential repairs, reconditioning, gearbox repairs you can trust, the team at Hornsby Differential & Gearbox Specialists are just a call away!



We all know how important vehicles are to get from A to B. Yet, few realise the complexities of the systems required to make their vehicle move. Differential units enable the wheels in your vehicle to spin at different speeds, without affecting the speed (torque). Your vehicle’s differentials function is essential when doing everything from off-road driving to turning, driving on slippery services and more. 

Gearboxes and differential units are manufactured to extremely high specifications and are designed to withhold large mechanical load as they deliver the engine’s power to the driving wheels of your vehicle. Our highly qualified transmission technicians are experts in checking all components used in the construction of gearboxes and final drive units for wear and mechanical failure. 

Utilising the industry’s best in specialised, precision engineering tools and equipment, we provide first-class quality repairs to gearboxes and differential units at affordable prices. To learn more about our services or to book in your vehicle, get in touch with us today! 


Diff Repairs

Diff Repairs Upper North Shore Sydney 

Hornsby Differential & Gearbox Specialists is your one-stop shop for all manual differential unit repairs. Working on all vehicle makes and models, we offer high-speed diffs for 4×4, maintenance and replacement of differential gears, differential repairs and ratio changeovers, differential housing and axle straightening and more. 

We work tirelessly to provide the best customer service with every step of the way and the best gearbox and differential repairs in Sydney’s Upper North Shore. 

our great clients

quote icon
  • review rating 5  Fantastic staff and service! Couldn't be happier with my new gearbox, my car runs like a dream.

    thumb Cameron Harmon
  • review rating 5  These guys are absolutely fantastic! Got the job done quickly & efficiently! Well priced and easy to deal with. Strongly reccomend to anyone!

    thumb Elliot Jackson
  • review rating 5  These guys are absolutely fantastic! Got the job done quickly & efficiently! Well priced and easy to deal with. Strongly reccomend to anyone!

    thumb Elliot Jackson
  • review rating 5  Cannot fault the new gearbox that was put in last month August. It is running smoothly and without the terrible noise in the lower gears. Owner was quick to identify the problem and did a very professional job. THANKS for being the Best and for not wasting my time in getting this or that part fixed up again and again as the job first go was done expertly. If you want a no fuss and quick service, contact Hornsby Differential and Gearbox Specialists for your diff and gearbox needs.

    thumb M Sheppard

manual gearboxes and differential services include: final drive services include 

  • Straightening of housings and axles
  • Ratio changes
  • Uni-joints
  • Specialist differential ratio changes for V8 Commodores
  • Better launch and performance enhancement modifications
  • Manual gearboxes repairs and reconditioning
  • Clutches
  • Wheel bearings
Manual Gearboxes and Differential Services

For expert repairs of gearboxes & differential units, call us now on

(02) 9477 6396