Moeller Brass Male Barb Fuel Fitting ā 1/4" x 1/8" NPT (03343310)
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Brass Male Barb Fuel Fitting ā 1/4" x 1/8" NPT ā Moeller 03343310
A compact brass male barb fitting that connects a 1/4" flexible fuel hose to a 1/8" NPT-threaded port. One end accepts a standard 1/4" fuel hose over the barb; the other end threads into any 1/8" NPT female port on a fuel system component. Built to OEM specifications for a reliable, leak-resistant connection in marine fuel systems.
Best Use Case
Use this fitting when a 1/4" fuel hose needs to connect to a small 1/8" NPT-threaded port ā common in primer bulb lines, small outboard fuel systems, fuel gauge tap points, and low-flow fuel accessories where a compact barb-to-thread transition is needed. The 1/4" barb size is smaller than the standard 3/8" outboard fuel line, so confirm the hose inner diameter before ordering. For the larger 3/8" barb version with the same 1/8" NPT thread, see the Moeller Brass Male Barb Fitting ā 3/8" x 1/8" NPT (03343410). For a 3/8" barb with a larger 3/8" NPT thread in aluminum, see the Moeller Aluminum Male Barb Fitting ā 3/8" x 3/8" NPT (03344310).
Key Features
- 1/4" hose barb end ā accepts standard 1/4" 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 23g ā ideal for tight spaces and small-bore 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
Two specs to confirm before ordering: (1) the hose inner diameter is 1/4" ā not 3/8"; and (2) the receiving port is a 1/8" NPT female thread. This is the smallest barb fitting in the Moeller lineup ā if the customer has a standard 3/8" outboard fuel line, they need the 3/8" x 1/8" NPT version (03343410) instead. For a 3/8" barb with a larger 3/8" NPT thread, see the Moeller Aluminum 3/8" x 3/8" NPT Barb Fitting (03344310). As with all NPT fittings, use fuel-compatible thread sealant (PTFE tape or thread compound) on the male threads when installing ā NPT threads are tapered and rely on thread engagement plus sealant for a leak-free seal. 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.
We are serious about product integrity ā and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.