Holley Performance 20-59 Cover-Diaphragm Housing

Product Description

Carburetor Diaphragm

Cover-Diaphragm Housing

Cover-Diaphragm Housing; 1 x 4 bbl; w/o Balance Tube;

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 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.