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Motion Raceworks


Billet Valve Cover Breather Attachment for Factory 5/8" Quick Release 10AN 90 Degree Adapter Fitting Gen V LT, Gen 3 Hemi, more.

Racing Use Only, Not Legal for Road Use

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Billet Breather Attachment for Factory 5/8" Quick Release 10AN 90 Degree Fitting

Standard 5/8" Quick Release fittings can be trouble some to adapt to aftermarket components such as catch cans, hooking up vacuum blocks on intakes and so forth.  It is difficult to find the correct size hoses and fittings to adapt.  

Motion Raceworks solved this problem with our line of 5/8" quick release adapters.  These use an oring seal and a positive bolt lock to create a secure, swiveling, adapter to convert this factory connection to 10AN or 3/8"NPT fitting sizes.  


  • Internal Radial Oring seal for positive seal on factory stem 
  • Positive locking bolt for secure connection
  • Black Anodized finish
  • Made 100% in the USA

This 90 degree to 10AN fitting is perfect for valvecovers to adapt to an appropriate size for running PCV or Catch can lines in high performance applications.  

These style fittings can be found on Gen 3 Hemi, Coyote Ford, LS engines, Gen V LT, and more!

For a full list of fitting options for the 5/8" factory connects, visit this link below.