Production of the Alpina B6 2.8 began in November 1978, utilizing the BMW 323i chassis code E21 as its base and boasting numerous performance enhancements courtesy of the Bavarian tuner. The 2.8-liter inline six-cylinder engine received several upgrades, including forged Mahle pistons, modified combustion chambers, and a higher compression ratio, with a Zenith-Pierburg-DL fuel-injection system further boosting power and fuel efficiency.
The engine generated a smooth-revving 200 brake horsepower, and it was paired with a Getrag five-speed manual transmission, rather than the standard 3 Series’ four-speed. To improve handling, Bilstein struts with gas-pressure shocks and shorter, stiffened springs were installed. The braking system featured ventilated, drilled discs at the front and solid discs at the back. Additionally, the front and rear spoilers were more than just aesthetic features, as they enhanced aerodynamics.
Source: RM Sotheby’s
