The Japan market, including vehicles built there for export, continues to dominate Aisin's results.
Operating profit in Japan jumped 22 percent to $1.6 billion, as revenue rose 11 percent to $21.66 billion.
North America ranked second in revenue, but last by region in operating profit. Revenue there eased 0.9 percent to $5.39 billion, but operating profit collapsed 88 percent to $26.4 million. In contrast, revenue in China rose 4.7 percent to $3.56 billion, while operating profit there slipped 2.5 percent to $517.7 million.
In Europe, revenue rose 13 percent to $3.3 billion, and operating profit rose 11 percent to $47.1 million.
Aisin Seiki forecast net will slip 1.2 percent in the current fiscal year to $1.25 billion. It forecast operating profit will edge up 0.5 percent to $2.4 billion, on a 1.8 percent gain in revenue to $37.46 billion.
Aisin Seiki, of Kariya, Japan, ranks No. 6 on Automotive News' list of the top 100 global parts suppliers, with parts sales to automakers of $31.39 billion in the fiscal year that ended March 31, 2017.
Yen amounts were converted at $1 equals 106.24 yen, the prevailing exchange rate as of March 31, the final day of the fiscal year, according to Oanda.com.