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Universal Sprayless Fuel Quick-Connect Fitting – Fits Marine Fuel Systems (Replaces Attwood 8838US6)

Regular price $22.99

Worry-free returns

You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Delivery and Shipping

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

The Attwood Universal Sprayless Fuel Quick-Connect Fitting provides a safe and reliable way to connect and disconnect pressurized fuel hoses, eliminating fuel spray during maintenance or fueling. Designed for marine applications, it is compatible with all standard marine fuel tanks that use 1/4" NPT fittings and supports engines from 1 to 350 HP.

This component is a direct replacement for Attwood part number 8838US6. It meets all EPA and CARB requirements for marine fuel systems.

  • Engineered for use with ethanol-blended fuels.
  • Features recessed check valves that automatically close upon disconnection to prevent accidental spray or leaks.
  • The female hose fitting is compatible with both 3/8" and 5/16" fuel lines for versatile use.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand OEM Part No.
Attwood 8838US6

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Brand Model Rated HP Stroke OEM Part No. Notes
All OEM Brands All Models 1-350 HP 2- & 4-Stroke Attwood 8838US6 Compatible with all standard marine fuel tanks with 1/4" NPT fittings

Technical Specs

Product Type
Fuel Quick-Connect Fitting
Installation
Replaces traditional tank fittings
Fuel Type
Compatible with ethanol-blended fuels
Connection
Male tank and female hose connectors
Housing Material
High strength body
Fitting Type
Universal Sprayless Connector
Thread Size
Male tank fitting: 1/4" NPT (6.4mm)
Warranty
2 Year
Other Technical Attributes
High fuel flow fitting (less than 0.25kpa restriction at 50 liters/hour)

What’s in the Box

  • 1 x Universal Sprayless Connector Set (Attwood 8838US6)
  • 1 x Male Tank Connector
  • 1 x Female Hose Connector

Installation Notes

  1. Ensure the engine is off and the fuel system is depressurized before beginning work.
  2. Disconnect the existing fuel hose from the tank fitting.
  3. Carefully unscrew and remove the old tank fitting from the fuel tank.
  4. The new male tank fitting comes with pre-applied fuel-grade thread sealant. Verify it is present before installing.
  5. Thread the new male tank fitting into the 1/4" NPT port on the fuel tank and tighten securely. Do not overtighten.
  6. Attach the new female hose connector to your 3/8" or 5/16" fuel line.
  7. Connect the female hose connector to the male tank fitting. Listen for an audible "click" to confirm it is locked.
  8. Once installed, prime the fuel system and carefully check for any leaks around the new fittings before starting the engine.

Troubleshooting & FAQ

How does the sprayless feature work?

Both the male and female connectors contain check valves that automatically close and seal the moment they are disconnected. This prevents pressurized fuel from spraying, a common issue with older fitting designs.

Is this fitting compatible with ethanol fuels?

Yes, this connector is specifically designed to be compatible with modern ethanol-blended fuels, ensuring long-term durability and performance.

What size fuel line does the female connector fit?

The female hose fitting is designed for compatibility with the two most common marine fuel line sizes: 3/8" and 5/16".

Do I need to apply thread sealant during installation?

No, the male tank fitting comes with fuel-grade thread sealant pre-applied for your convenience, ensuring a leak-free seal without extra steps.

What are the signs of a failing fuel connector?

Signs of a failing connector include visible fuel leaks or drips at the connection point, a persistent smell of gasoline, difficulty connecting or disconnecting the fitting, or visible cracks and degradation of the housing material.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

  • Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
  • This is an aftermarket replacement, not an OEM component.
  • Professional installation is recommended for safety and performance.

About Sea Sierra

  • Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
  • Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
  • Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.

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