Holley Accelerator Pump Discharge Nozzle 0.021" Hole Size Straight Type (HO121-121) Holden this means a perfect seal

this means a perfect seal onto and around the spark plug

AC Delco A1282C

Air filter media can be washed and reused

less un-burnt fuel is present in the exhaust manifold where it can flash ignite to increase EGTs and create particulate matter (soot)

2003 FORD E350 CLUB WAGON 7

Holley Accelerator Pump Discharge Nozzle 0.021" Hole Size Straight Type (HO121-121) Holden this means a perfect sealHO121 121 ACC PUMP DISCHARGE NOZZLE. 021, Including 4 Gaskets Part Number: HO121 121 Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From start to finish, Holley has the parts to make your dream a reality.