Originally used on Rochester Marine carburetors.

Fits:
Rochester Quadrajet
Rochester 2G Carburetors

MERCURY MARINE # 35-53336, 3302-9033
OMC # 908034
VOLVO PENTA # 835576-0

Dimensions:
Length: 1.140" (1-1/8")
Diameter: 0.730" (3/4")

Suggested Parts:
We recommend installing a new fuel filter spring to replace a weak or missing spring. The spring is installed in the carburetor body first then the filter goes in next with the filter opening facing away from the carburetor. The fuel filter will not work with a missing or weak spring.:
#2261 Fuel Filter Spring 
Also be sure to install a new Inlet Fitting Gasket:
For Rochester carburetors with 7/8" inlet threads use #2231B 
For Rochester carburetors with 1" inlet threads use #2232