Baldwin Filters RS3995 Radial Seal Inner Air Filter Element

The Baldwin Filters RS3995 is a new, OEM-quality heavy-duty radial seal inner (secondary/safety) air filter element designed for use inside a matching primary outer air filter in two-stage air filtration systems common on large diesel engines, off-highway equipment, and industrial machinery. The "RS" designation in Baldwin's part numbering system denotes Radial Seal construction, where the filter media seals radially against the housing rather than axially, eliminating the need for a wing nut and providing a more reliable, leak-free seal; the inner element serves as a safety filter to protect the engine if the primary element is damaged or incorrectly installed. The filter body features a white synthetic fiber (non-woven) filter media wrapped around a structural inner core with a metal mesh support screen visible on the inlet end, black plastic end caps with a molded radial sealing surface on the top and a spider-web reinforcing structure on the bottom end cap, and is manufactured in the USA as indicated on both the box label and the filter label (date code 010721). The RS3995 is a direct OEM-equivalent replacement that cross-references to Donaldson P607965, Fleetguard AF25557, and Wix 46621, fitting a range of Caterpillar, Komatsu, and other heavy equipment applications that use the corresponding primary outer element.

Product Specifications