Moeller Brass Male Barb Fuel Fitting ā 3/8" x 1/8" NPT (03343410)
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Brass Male Barb Fuel Fitting ā 3/8" x 1/8" NPT ā Moeller 03343410
A compact brass male barb fitting that connects a 3/8" flexible fuel hose to a 1/8" NPT-threaded port. One end accepts a standard 3/8" fuel hose over the barb; the other end threads into any 1/8" NPT female port on a fuel system component. The brass construction delivers corrosion resistance and durability in marine fuel environments, and the OEM-specification build ensures a reliable, leak-resistant connection.
Best Use Case
Use this fitting when a 3/8" fuel hose needs to connect to a small 1/8" NPT-threaded port ā common in primer bulb connections, fuel gauge tap points, small-bore fuel system fittings, and custom fuel line builds where a barb-to-small-thread transition is required. The 1/8" NPT thread is a standard size for many marine fuel system accessories. For a larger 3/8" NPT version of this barb fitting in aluminum, see the Moeller Aluminum Male Barb Fitting ā 3/8" x 3/8" NPT (03344310). For through-panel bulkhead fittings with NPT threads, see the Moeller Brass Bulkhead Fitting ā 1/4" Female NPT (03343510) or the Moeller 3/8" Aluminum Bulkhead Fitting (03321010).
Key Features
- 3/8" hose barb end ā accepts standard 3/8" flexible fuel hose
- 1/8" NPT male thread end ā threads into any 1/8" NPT female port
- Brass construction ā corrosion-resistant and durable in marine fuel environments
- OEM-specification build quality for reliable, long-term use
- Compact and lightweight at 27g ā ideal for tight fuel system installations
- Universal fit ā not engine-brand specific; works with any 1/8" NPT-ported fuel system component
ā Not for use in potable water systems.
Parts Desk Insights
The critical spec to confirm before ordering is the NPT thread size: this fitting has a 1/8" NPT male thread ā not 1/4" or 3/8" NPT. The 1/8" NPT is a small thread commonly found on primer bulb ports, fuel gauge taps, and small-bore fuel accessories. If the customer needs a larger NPT thread, refer them to the Moeller 3/8" x 3/8" NPT Aluminum Barb Fitting for a 3/8" NPT version, or the Seachoice 1/4" NPT Male Tank Fitting for a 1/4" NPT option. As with all NPT fittings, use fuel-compatible thread sealant (PTFE tape or thread compound) on the male threads when installing. NPT threads are tapered ā do not overtighten, especially into softer materials. For engine-brand quick-connect fittings, see the Fuel Fittings & Connectors collection.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3ā4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us ā and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
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