The 3/8" brass hose barb fuel fitting from Buckshot Racing #77 is a direct replacement for OEM fuel fittings on all Mercury Marine, Racing and Mariner WH, WMV, and WMH carburetors, found on 2.0, 2.4, 2.5, and 3.0 Liter Mercury 2-stroke 135 HP, 150 HP, 175 HP, 225 HP, 245 HP, 250 HP, XR2, XR4, XR6, SST-120, and SST-140 outboards.
Designed for high-performance and racing applications, this fitting increases fuel flow by replacing the stock 1/4" or 5/16" fuel fittings with a larger 3/8" diameter, reducing restriction and optimizing fuel delivery.
Upgrading to a 3/8" carb fuel fitting significantly enhances fuel flow capacity. A 1/4" hose has a cross-sectional area of 0.049 in², while a 5/16" hose increases this by 57% to 0.077 in². The 3/8" hose provides a further 43% increase, with a total of 124% more fuel flow compared to 1/4" fittings.
This improvement is particularly beneficial for higher-RPM turning, high-horsepower carb motor applications, ensuring the engine receives sufficient fuel under load.
The multi-barb design with four barbs provides a secure connection to fuel lines, reducing the need for additional clamps. Unlike clamp-style fittings, the ribbed barb structure enhances grip on the fuel hose, minimizing the risk of leaks in low-pressure carbureted fuel systems.
Our carb fitting is compatible with some of the best Mercury 2-stroke V6 outboards, including models frequently used in bass boats, drag racing, circle boat racing, tunnel boats, offshore racing, and high-performance marine applications.
This 1/8 NPT / MPT threaded brass fuel fitting installs directly into the Mercury float bowl, replacing the factory fitting without modification. Constructed from corrosion-resistant brass, it ensures long-term durability in marine environments.
The upgrade is ideal for outboard tuners and racers who frequently remove or rebuild carburetors, as the secure barb design allows for repeated installation and removal without damaging fuel lines.
By replacing the OEM 1/4" or 5/16" fuel fitting with this straigh-through higher-flow 3/8" brass barb fitting, Mercury 2-stroke outboard owners can improve fuel efficiency, throttle response, and overall performance.
Whether used on a Mercury 135, 150, 175, 200, 225, 250, or 300 HP carbureted 2-stroke, this upgrade supports increased fuel demand in modified and high-performance applications.
Include one (1) 1/8" to 3/8" Brass Hose Barb Fitting or Buy 3, Save $3
For technical support contact Mike Hill at mike@buckshotracing77.com or call +1-714-697-1716