Oil Breathers

Browse oil breathers, catch cans and crankcase ventilation components, including Proflow tanks, breather filters, push-in caps, valve-cover grommets and an LS oil-cap breather. The range also includes a PCV valve and multipurpose aluminium tanks.

Choosing your breather components

  • Catch cans and tanks: Compare capacity, port configuration and body dimensions. Allow clearance for filters, hose connections, mounting and access to the drain.
  • Connections: Check the specified AN, ORB or other connection type on each listing. Match the fittings and hose to the tank and your existing ventilation system.
  • Breather caps and filters: Confirm the thread or push-in neck size, grommet dimensions and available valve-cover clearance.
  • Vehicle fitment: Check the valve-cover attachment for the LS oil-cap breather and verify the PCV valve's application before ordering. Universal components still require size and installation checks.
  • System layout: Select components to suit your engine's ventilation arrangement and follow the manufacturer's installation and maintenance instructions.

Features such as internal plates, washable filters, drain taps and mounting hardware vary by model. Check the individual product listing for what is included. Radiator overflow and recovery tanks shown here serve the cooling system and are not interchangeable with crankcase catch cans.

18 products

Shop by Engine 

View all
1 13
View all
1 14
View all
1 6
View all