Sisu A-45 is a light off-road lorry made by the Finnish heavy vehicle producer Suomen Autoteollisuus (SAT) in 1970–1982.

However, some of the A-45's were made in Karis due to occasional lack of production capacity in Hämeenlinna.

The naturally aspirated version gives an output of 103 kW and torque of 393 Nm, the stronger version equipped with turbocharger has got 110 kW maximum output and 468 Nm torque.

Both axles are driven and equipped with planetary hub reduction and differential locks.

Suspension is carried out with leaf springs, the front axle has got also shock absorbers.

A reconnaissance winch of 6.5-ton capacity and 60-metre cable length is mounted as standard and it can be used both in front and rear end of the vehicle.

Access is from rear end and the platform is equipped with a detachable canopy with steel structure.