Minimise Downtime. Maximise Uptime.

Over 400 exchange units in stock, each dyno‑tested and backed by a 1‑year unlimited kilometre warranty. Explore Mayfair Gearbox’s Transmission & Differential Exchange.

Here’s how to get started:

  1. Submit this simple form.
  2. A Mayfair commercial specialist will get back to you shortly.
  3. We’ll confirm exchange unit availability and get your vehicle back on the road.

Mayfair Gearbox helps you minimise downtime with:

Exchange units in stock:

Commercial transmissions and differentials ready when you need them, including remanufactured Allison transmissions from an Allison Approved Remanufacturer.

Remanufactured to OEM specification:

Every unit is stripped, thoroughly cleaned, rebuilt using OEM components and dyno tested to the manufacturer’s specifications, backed by 24 OEMs.

Support where you need it:

On‑site removal and replacement, 24‑hour national roadside assistance and a 1‑year unlimited kilometre warranty.