Versions of the Bedford SB exported to New Zealand were powered by the standard petrol or diesel engines, however, many were later powered by Leyland, Scammell, Cummins, Detroit, Isuzu, Mitsubishi, Gardner and GMC engines.
Versions of the Bedford SB exported to New Zealand were powered by the standard petrol or diesel engines, except the last batch sold to New Zealand Railways Department, which used Caterpillar C7 engines and Allison transmissions. Many were later powered by Caterpillar, Leyland, Scammell, Cummins, Detroit, Isuzu, Mitsubishi, Gardner and GMC engines.