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These black anodized billet aluminum 3/8" hose barb adaptors directly replace your OEM brass fittings in the sides of your Mercury WH, WMV, and WMH carburetor fuel ports. They increase the straight-through fuel flow lines from 5/16" to 3/8" for high performance and racing applications.


The black anodizing process used on our fittings creates a semi-porous aluminum oxide layer. This layer is then dyed black using an electrolytic dyeing using metal salts. This finished black anodized billet aluminum is harder and stronger than raw aluminum and is resistant to chipping, peeling, scratching, and flaking.


Includes one (1) 3/8" Hose Barb Fitting that fits directly to OEM Mercury NPT / MPT Float Bowl. 


Contact Mike Hill at

3/8" Carb Fuel Fitting, Billet Aluminum

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