Toyota Quantam gearboxThe Toyota Quantum gearbox is specifically designed to fit the Toyota Quantum, which is a minibus van model produced by Toyota primarily for passenger and cargo transport. In some markets, this vehicle is also known as the Toyota HiAce (latest generations, depending on engine type and model year). A Toyota Quantum gearbox is generally compatible with: Toyota Quantum (various trims, depending on engine specifications such as 2. 5 D 4D, 2. 7 VVT i, or