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International Harvester K-Series

The K and KB trucks were produced by the International Harvester Company, the first being the K introduced in the mid 1940s. In total there were 42 models, 142 different wheelbase lengths and load ratings ranging from 1/2 ton to 90,000 lbs. They are best known for their durability, prewar design in a postwar era, and low price. The followup to the K, the KB, was introduced in 1947, with the characteristic difference being a widened lower grill appearing like "wings". Between 1947 and 1949 122,000 KB-1 and KB-2 trucks were sold. The KB series was subsequently replaced by the L-Series.

K Series

Models

The K models progress from 1 to 8 based upon the load capacity (K1 = half ton, K2 = 3/4 ton, K3 = 1 ton, etc.).

Light duty

Few differences exist between K-1 and K-2 models as they share most of their mechanical and chassis components. The rear axles in these two models is supported by a single roller bearing. Their differences in load rating are due to the K-2's stronger suspension.

The K-3 has a heavier frame, larger brakes, and rear axles supported by two roller bearings on a free floating rear end.

Heavy duty

KB model numbers ranged up to the KB-14.

Styling

The style of the truck involved headlamps that were integrated into the fenders. The hood opens alligator style. Heavy duty models (K6 and above) carried over the D-series cab and high crowned fenders.

KB Series

The KB series added wings on the sides of the grill, a wrap-around chrome piece on the front hood, a hood ornament and chrome lettering indicating the model designation below the International nameplate on each side of the hood.