Raceworks Round Catch Can Twin AN-8 External Breather 1L – BlackRaceworks Round Catch Can Twin AN 8 External Breather 1L Black An oil catch can or breather tank is an essential step in removing PCV oil before it enters the combustion chamber, and must be baffled while providing unrestricted flow to maintain efficiency and prevent intake carbon build up. Raceworks Catch Cans have been engineered to withstand the most extreme street and track conditions, featuring robot welded 5052 aluminium construction for