This is the period of the first breakthrough for Penta as a product name. At the start of the 1920s the general depression forced the company to keep business at a very low level. Two events would change this:
In 1922 the U2 outboard engine was introduced and 343 units were sold in the very first year. During the whole of the 1920s, no less than 7,874 U-2s were sold - more than the rest of the product range put together.
1925. Penta received its first order from AB Volvo, a newly established car manufacturer in Goteborg. Two years later, the first Volvo cars were running, powered by Penta. Read more under 1925 in the navigation