Offenhauser 4039 Breather


3 in stock


Material Type: Aluminum
Finish: Polished
MFG. Part #: 4039
Sold in Quantity: Each
Overall Height: 4.50″
Attachment Style: Bolt-on

This Offenhauser valve cover breathers’ superior baffle design insures open air passages at all times – no oil leakage even at extremely high rpm’s. It’s made of polished cast aluminum and is 5″ tall. The base measures 1-3/4″ x 4-3/4″.  The top of this breather is NOT removeable.  Breather includes a lower baffle plate in addition to featuring internal layer type baffle where one plate is over the other.  It allows the air to breath, but keeps the oil baffled below.

Includes gasket, bolts and mounting hole template.


  • Lid is NOT removeable
  • Bolt Hole Centers:  4.00″
  • Overall Height:  4.50″
  • Base:  1-3/4″ x 4-3/4″


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