Based on the aggregated intelligence of 180,000-plus investors participating in Motley Fool CAPS, the Fool's free investing community, filtration systems and replacement parts specialist Donaldson Company (NYSE:DCI) has earned a respected four-star ranking.

With that in mind, let's take a closer look at Donaldson and see what CAPS investors are saying about the stock right now.

Donaldson facts

Headquarters (Founded)

Minneapolis (1915)

Market Cap

$4.8 billion

Industry

Industrial machinery

Trailing-12-Month Revenue

$2.5 billion

Management

Chairman/CEO William Cook
CFO James Shaw

Return on Equity (Average, Past 3 Years)

26.2%

Cash/Debt

$318.2 million / $301.0 million

Dividend Yield

1.1%

Competitors

Cummins (NYSE:CMI)
MFRI
(NASDAQ: MFRI)
Pall
(NYSE: PLL)

Sources: S&P Capital IQ and Motley Fool CAPS.

On CAPS, 91% of the 207 members who have rated Donaldson believe the stock will outperform the S&P 500 going forward.

Just yesterday, one of those Fools, valuemoneygreen, tapped Donaldson as a solid long-term opportunity:

Not a household name everyone has heard of. Take a look at the numbers though. Impressive if I do say so myself. ROI, ROE. Margins steadly getting better. Not cheap by any means. A better price to get in at would be $28 or lower if it gets back down there. Adding this because over a 5 + year period I think this equity will outperform the market. ... [S]hare count has been steadily going down.

If you want market-thumping returns, you need to put together the best portfolio you can. Of course, despite a strong four-star rating, Donaldson may not be your top choice.

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This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.