Edelbrock 4204 Elite Series Push-In Rectangular Breather
The Edelbrock Elite Series Push-In Breather is made of die-cast aluminum with a foam element.  It is polished to a high shine.  It has an allen head bolt-on cover for access to its internal foam filter.  The top and base material is made of aluminum with a natural finish.  Breather tube, PVC (Positive Crankcase Ventilation) valve and grommets are not included.  The internal foam filter element will not leak or clog.