4 x 3/16”.
1" - One Inch Aluminium Carb Spacer Kit With Vacuum Port - Holley Edelbrock 4bbl
Edelbrock 1477 Carb Rebuild Kit For All Edelbrock Square-Bore Carbs
8 X 4mm 5/32" Silicone Blanking Cap Intake Vacuum Hose End Bung Plug Caps Black
Classic car- CARB Balance Vacuum sync Gauge M5 Adaptors & caps x 8 Brass metric
Classic car- CARB Balance Vacuum sync Gauge M5 Adaptors & caps x 4 Brass metric
Classic car- CARB Balance Vacuum sync Gauge M5 Adaptors & caps x 10 Brass metric
