Integrated Base Filter for a DEF Manifold

A header assembly insertable into a fluid reservoir for reductant fluid, the header assembly comprising:

• a header including a header flange having a flange outer diameter, and a header boss descending from the header flange having a boss outer surface with a boss outer diameter that is less than the flange outer diameter of the header flange, the boss outer surface having a first mounting recess and a second mounting recess defined therein;
• a base filter comprising:
• a first semi-cylindrical holder portion having a first semi-cylindrical wall with a first upper edge surface, the first semi-cylindrical wall concluding at a first abutment surface and a second abutment surface, wherein the first semi-cylindrical holder portion has a first mounting tab extending inward from an inner surface of the first semi-cylindrical wall proximate the first upper edge surface, and
• a second semi-cylindrical holder portion having a second semi-cylindrical wall with a second upper edge surface, the second semi-cylindrical wall concluding in a third abutment surface and a fourth abutment surface, and wherein the second semi-cylindrical holder portion has a second mounting tab extending inward from an inner surface of the second semi-cylindrical wall proximate the second upper edge surface,
• wherein the first mounting tab and the second mounting tab are circumferentially spaced about the first semi-cylindrical wall and the second semi-cylindrical wall, respectively, to align with and be inserted into the first mounting recess and the second mounting recess, respectively, of the boss outer surface when the base filter is assembled on the header boss with the first abutment surface facing and engaging the third abutment surface and the second abutment surface facing and engaging the fourth abutment surface;
• and
• a diesel exhaust fluid (DEF) filter secured to the base filter and descending from the header.

A base filter for a diesel exhaust fluid (DEF) filter of a header assembly in a fluid reservoir, wherein the header assembly includes a header having a cylindrical header boss with a boss outer surface having a first mounting recess and a second mounting recess defined therein, the base filter comprising:

• a first semi-cylindrical holder portion having a first semi-cylindrical wall concluding at a first abutment surface and a second abutment surface, wherein the first semi-cylindrical holder portion has a first mounting tab extending inward from an inner surface of the first semi-cylindrical wall;
• a second semi-cylindrical holder portion having a second semi-cylindrical wall concluding in a third abutment surface and a fourth abutment surface, wherein the second semi-cylindrical holder portion has a second mounting tab extending inward from an inner surface of the second semi-cylindrical wall;
• wherein the first mounting tab and the second mounting tab are circumferentially spaced about the first semi-cylindrical wall and the second semi-cylindrical wall to align with and be inserted into the first mounting recess and the second mounting recess, respectively, of the boss outer surface when the base filter is assembled on the cylindrical header boss with the first abutment surface facing and engaging the third abutment surface and the second abutment surface facing and engaging the fourth abutment surface.