The Radium Engineering 18-0042 air filter is commonly used for venting engine crankcase vapors, fuel cells, etc. It is compatible with a 3/4″ (19mm) barbed nipple.

SPECIFICATIONS
Style:Straight Cylinder
Media:Non-Woven Synthetic
Media Color:Green Dye
Pre-Oiled and Washable:Yes
Inner Diameter:0.75in (19mm)
Outer Diameter Bottom:2.2in
Outer Diameter Top: 2.0in
Filter Height:2.4in (total)
Filter Inlet:Polyurethane
End Caps:Stainless Steel
Radium Logo:Embossed
Finish:Black Zinc-Plate
Clamp:Stainless Steel