Moroso 68812 Moroso Filtered Valve Cover Breather - Clamp-On - Half Hood - 1.5in IDMoroso 68812 Moroso Filtered Valve Cover Breather Clamp On Half Hood 1. 5in ID Valve Cover Filtered Breather, half hood, clamp on type. For Moroso Covers with welded in stacks, 1 1 2" I. D. Available in half hooded or non hooded Provides maximum protection against dirt and airborne debris without restricting air flow Available in two types Push In or Clamp On (for existing stacks includes clamp) Cleanable and re usable; oil before use One per pack Not