FREE SHIPPING on all orders

Holley Performance 20-73 Cover-Diaphragm Housing

Carburetor Diaphragm

Cover-Diaphragm Housing

Cover-Diaphragm Housing; Quick Change w/Balance Tube;

  • Color: Black
  • Material: Plastic
  • WARNING CA Proposition 65: No

  • Quick Change Cover-Diaphragm Housing
  • Expedites Changing Of Vacuum Spring

Allows vacuum hookup between carburetors for more even and balanced secondary operation.

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for fits GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress-up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Exhaust, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.