The W.W. GRAINGER 4N437 filter element replacement meets or beats the original GRAINGER filter quality. This Grade 6 coalescing filter offers equal to or better filtration performance based on the original OEM filter specifications.
The W.W. GRAINGER 4N437 filter element equivalent is manufactured with the highest quality standards and includes a money back guarantee. We have replaced all major brands of OEM and replacement filters in tens of thousands of applications since 1976.
