The "Napa 3002" is a NAPA Gold Fuel Filter, specifically a universal see-thru plastic in-line fuel filter. It's designed for gasoline engines and is not suitable for diesel applications (Napa recommends using #3972 for diesel).
Here's some additional information about the Napa 3002:
Type: In-line fuel filter, designed for carbureted low-pressure applications.
Material: Plastic body.
Purpose: Provides engine protection by filtering the fuel, especially under demanding conditions like dirt roads, construction sites, and frequent stopping and starting.
Specifications:
Height: 3.92 inches (100 mm)
Outer Diameter (O.D.): 1.77 inches (45 mm)
Inlet/Outlet Thread Size: 5/16 inches
Cross Reference: It is cross-referenced with Wix 33002 and Baldwin BF7736.