Skunk2 3/4in. ID Filter for use with Ultra Series Manifolds. Skunk2 Racing Crankcase Breather Filter. Universal 3/4" female connection can be used to filter the air coming out of your crankcase as well as keep contaminates out of your engine.

Features:

• Designed to deliver trouble-free, consistent performance
• 3/4 in. female connection 
• Right for your vehicle and lifestyle
• Made from high-quality materials for ultimate durability
• Manufactured to meet or exceed strict quality requirements