Investors might want to bet on Gentherm (THRM), as earnings estimates for this company have been showing solid improvement lately. The stock has already gained solid short-term price momentum, and this trend might continue with its still improving earnings outlook.The upward trend in estimate revisions for this maker of climate-controlled seats and other products reflects growing optimism of analysts on its earnings prospects, which should get reflected in its stock price. After all, empirical research shows a strong correlation between trends in earnings estimate revisions and near-term stock price movements. Our stock rating tool -- the Zacks Rank -- is principally built on this insight.The five-grade Zacks Rank system, which ranges from a Zacks Rank #1 (Strong Buy) to a Zacks Rank #5 (Strong Sell), has an impressive externally-audited track record of outperformance, with Zacks #1 Ranked stocks generating an average annual return of +25% since 2008.Consensus earnings estimates for the next quarter and full year have moved considerably higher for Gentherm, as there has been strong agreement among the covering analysts in raising estimates.The chart below shows the evolution of forward 12-month Zacks Consensus EPS estimate:12 Month EPSCurrent-Quarter Estimate RevisionsThe company is expected to earn $0.64 per share for the current quarter, which represents a year-over-year change of -1.54%.Over the last 30 days, the Zacks Consensus Estimate for Gentherm has increased 23.08% because four estimates have moved higher compared to no negative revisions.Current-Year Estimate RevisionsFor the full year, the earnings estimate of $1.77 per share represents a change of -24.36% from the year-ago number.There has been an encouraging trend in estimate revisions for the current year as well. Over the past month, four estimates have moved up for Gentherm versus no negative revisions. This has pushed the consensus estimate 42.34% higher.Favorable Zacks RankThanks to promising estimate revisions, Gentherm currently carries a Zacks Rank #1 (Strong Buy). The Zacks Rank is a tried-and-tested rating tool that helps investors effectively harness the power of earnings estimate revisions and make the right investment decision. You can see the complete list of today's Zacks #1 Rank (Strong Buy) stocks here.Our research shows that stocks with Zacks Rank #1 (Strong Buy) and 2 (Buy) significantly outperform the S&P 500.Bottom LineGentherm shares have added 6.1% over the past four weeks, suggesting that investors are betting on its impressive estimate revisions. So, you may consider adding it to your portfolio right away to benefit from its earnings growth prospects.Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Gentherm Inc (THRM): Free Stock Analysis Report To read this article on Zacks.com click here.