Twist-on breather cap ea




RPC push in breathers are made out of high quality billet aluminum and made to fit 1-1/4″ valve cover holes using 1″ I.D. valve cover grommets. Available in smooth, ball milled, finned or our popular “Pro-Street” laser etched tops in chrome, polished or black finishes. *VALVE COVER GROMMET NOT INCLUDED

Recommended Parts:

Steel Valve Covers

  • Steel Valve Cover Grommet: R4880
  • Baffled Steel Valve Cover Grommet: R9358

Aluminum Valve Covers

  • Aluminum Valve Cover Grommet: R4996
  • Baffled Aluminum Valve Cover Grommet: R9358X


This product is legal for off road use and non pollution controlled vehicles (1965 & older); however, it has not been tested or approved by the California Air Resources Board (CARB) for highway vehicles in the state of California. By purchasing this product, buyer agrees it will not be used on pollution controlled vehicles in California, or in a state with similar emissions regulations.

WARNING: Cancer and Reproductive



Additional information

Weight 1 lbs
Dimensions 9 × 6 × 4 in