Quickchange Vacuum Secondary Housing Cover 20-59. Cover-Diaphragm Housing 1 x 4 bbl. Allows You To Change The Secondary Diaphragm Spring Without Disturbing The Diaphragm. Expedites Changing Of Vacuum Spring.
Holley 20-59 Quickchange Vacuum Secondary Housing Cover
Holley R84010-1 Vacuum Secondary, 3060 Model With Warranty Tag
Holley Hi Ram Vacuum/Boost Reference Port Adapter to 1/8" NPT
AED 41601 Holley 600-750 Vacuum Secondary Pro Series Carburetor Rebuild Kit 3310
Holley 135-3 Vacuum Secondary Diaphragm Kit.
Demon Carburetor Rebuild Kit Demon Road/Sea/Speed Holley 4150 Model Vacuum Sec
