The grades of 3 Auto Components stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Tower International, Inc. (TOWR) earns a B this week, jumping up from last week’s grade of C. Tower International, Inc. is a global manufacturer of engineered structural metal components and assemblies, primarily serving automotive original equipment manufacturers. The company also gets A’s in earnings momentum and return on equity. For more information, get Portfolio Grader’s complete analysis of TOWR stock.

American Axle & Manufacturing Holdings, Inc. (AXL) is seeing ratings go up from a C last week to a B this week. American Axle & Manufacturing Holdings, Inc. engages in the design, engineering, validation, and manufacture of driveline and drivetrain systems, and related components and chassis modules for automotive industry worldwide. The company also gets A’s in return on equity and free cash flow. For more information, get Portfolio Grader’s complete analysis of AXL stock.

This is a strong week for Stoneridge, Inc. (SRI). The company’s rating climbs to B from the previous week’s C. Stoneridge, Inc. is an independent designer and manufacturer of highly engineered electrical and electronic components, modules and systems for the medium- and heavy-duty truck, agricultural, automotive and off-highway vehicle markets. The company also gets A’s in earnings surprise, earnings momentum, and return on equity. For more information, get Portfolio Grader’s complete analysis of SRI stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.