It was followed in 1903 by a six-cylinder version, possibly the first overhead-camshaft six to go into production.
A six-cylinder version called the Maxima was released in the 1980s and became a separate model.
A six-cylinder version, the K6, succeeded the Junior in 1934.
Volkswagen contracted Oettinger to develop a six-cylinder version of this engine.
There was a brief competitive history with a mid-engined, six-cylinder version of the Metro.
It was available in two-cylinder to six-cylinder versions and delivered from 125 to 375 horsepower.
It is essentially a six-cylinder version of the 318 V8.
From 1962 the Zephyr itself was offered in both four- and six-cylinder versions.
Unlike preceding generations, four- and six-cylinder versions now shared a front end of the same length.
The wagon had different tail lights, headlights, and no turbo or six-cylinder versions available.