Holley Needle & Seat - "Steel" Needle and Seat (Adjustable w/ .130" Seat) 10204C These pumps were used on

These pumps were used on most Chevrolet applications with short and long water pumps until the early 1980's

3 Way Discharge

2004-2008 GMC W3500 Forward

a removable comfort liner that can be cleaned or replaced to create a custom fit

5/8-18 and 11/16-18 in Male O-Ring

Holley Needle & Seat - "Steel" Needle and Seat (Adjustable w/ .130" Seat) 10204C These pumps were used onSteel tipped inlet needles are necessary when using exotic racing fuels or alcohol or when using benzine or acetone additives. a . 097" seat size should be used for small four barrel carburetors; a . 110" seat size should be used for carburetors up to 735 CFM; larger seat sizes should be used with carburetors 750 CFM and larger. "Adjustable" needle and seat designs allow external float adjustment, without removing the fuel bowl. The "non adjustable"