Four auto parts stocks are moving up in their overall rating this week, according to the Portfolio Grader database. Every one of these is graded an “A” (“strong buy”) or “B” overall (“buy”).

This week, Tenneco (TEN) is showing significant improvement as the company’s rating hops from a C (“hold”) to a B (“buy”). Tenneco designs, manufactures, and markets emission control and ride control products and systems for the automotive original equipment market and the aftermarket. In Portfolio Grader’s specific subcategory of Equity, TEN also gets an A. For more information, get Portfolio Grader’s complete analysis of TEN stock.

BorgWarner (BWA) is seeing ratings go up from a C last week to a B this week. BorgWarner is a supplier of highly engineered systems and components, mainly for powertrain applications. For more information, get Portfolio Grader’s complete analysis of BWA stock.

Modine Manufacturing Company (MOD) shows solid improvement this week. The company’s rating rises from a C to a B. Modine Manufacturing specializes in thermal management systems and components, bringing heating and cooling technology and solutions to diversified global markets. For more information, get Portfolio Grader’s complete analysis of MOD stock.

This week, STRATTEC SECURITY CORPORATION (STRT) is making solid headway. The company’s rating improves to an A (“strong buy”) from last week’s B (“buy”) rating. Strattec Security designs, develops, manufactures and markets mechanical locks, electro-mechanical locks, latches and related security/access control products for major North American and global automotive manufacturers. For more information, get Portfolio Grader’s complete analysis of STRT 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.