Description

When you’re running a compressor all day or operating heavy construction equipment in dusty conditions, clean air isn’t just important—it’s everything. A dirty or damaged air filter lets debris into expensive engine components, turning what should be reliable operation into costly repairs. This Baldwin outer air filter element does the heavy lifting, catching dust, dirt, and debris before they can reach your equipment’s engine or compressor internals.

What You’re Getting

Large 21 5/32-inch length and 9 1/2-inch diameter for maximum dirt-holding capacity in demanding conditions
Baldwin quality construction with pleated media that holds its shape even when loaded with dirt, and seals that stay flexible through temperature swings and vibration
Outer element designed for two-stage filtration systems—works with inner element RS3997 for complete protection
Direct replacement that installs without modifications

Built for Demanding Work

This filter fits Atlas Copco compressors, Demag cranes, Grove mobile cranes, and Liebherr construction equipment—machines that work in some of the toughest conditions you’ll find. Whether you’re running a compressor on a construction site, operating a crane in dusty industrial environments, or working heavy equipment where debris is constantly in the air, this filter handles the punishment that comes with serious commercial operation.

Made to Last

Baldwin has been making filters for decades, and they know what it takes to survive in harsh conditions with constant exposure to dust, temperature swings, and vibration. The robust construction and quality filtration media keep doing their job hour after hour, protecting your investment in expensive engine and compressor components.

Installation Notes

Always replace both outer and inner elements together during service, and check your air intake piping and clamps while you’ve got the housing open since even small leaks let unfiltered air bypass your filtration entirely. Keep spare filters on hand during dusty seasons when you might need to service them more frequently than normal intervals.