* Cuts FY 2010 revenue outlook to $420-$430 million
* Commences 2 mln share offering
* Shares down 4 pct after market
Dec 6 (Reuters) - Fuel Systems Solutions FSYS.O, a maker of alternative-fuel components, cut its 2010 revenue outlook, as it expects lower European automotive purchases in the fourth quarter, sending its shares down 4 percent.
The maker of components and systems that control the pressure and flow of gaseous alternative fuels expects 2010 sales of $420-$430 million, compared with its previous forecast of $425-$450 million.
Analysts were expecting $440.6 million, according to Thomson Reuters I/B/E/S.
Fuel Systems, which has a market value of about $627.1 million, is shifting its focus to the Asian and Latin American markets.
Separately, the company said it commenced a public offering of 2 million common shares.
Shares of the company were down 4 percent at $35.08 in extended trade. (Reporting by Fareha Khan in Bangalore; Editing by Vinu Pilakkott)