Attwood Marine Fuel Tank and Hose Fittings, For Mercury/Mariner

Overview

This Attwood Marine Mercury/Mariner fuel tank and hose fitting range is for connecting portable fuel tanks and fuel hoses on Mercury and Mariner outboard fuel systems. The range covers the two sides of the connection: a 1/4" NPT tank male fitting in brass and a 3/8" barb hose female fitting in acetal.

These fittings are small parts, but they matter when setting up or servicing an outboard fuel line. They help create the connection point between the tank and hose assembly, so they are most relevant when replacing a worn fitting, building a new portable tank setup, or matching a hose end to an existing Mercury or Mariner fuel tank connection.

Key features

• Made for Mercury and Mariner outboard fuel tank and hose connections.
• Available as a tank-side 1/4" NPT male fitting or a hose-side 3/8" barb female fitting.
• Brass tank fitting option suits threaded fuel tank installations where a 1/4" NPT connection is required.
• Acetal hose fitting option works with 3/8" inside diameter fuel hose and a proper fuel hose clamp.
• Suitable for use with leaded, unleaded, ethanol-blended, and alcohol-blended fuels.
• Useful for portable tank setups, fuel hose replacement, and routine outboard fuel system service.

Variants

This product is offered in two configurations for different connection points in a Mercury or Mariner outboard fuel system.

The part that changes between variants is the fitting style: one option is the tank-side threaded connector and the other is the hose-side barbed connector. Material also changes by configuration, with brass used on the tank fitting and acetal used on the hose fitting.

• 8873-6: Connection Type 1/4" NPT Thread, End Type Tank Male, Material Brass. This version installs at the fuel tank connection point where a 1/4" NPT male tank fitting is needed.
• 8890LP6: Connection Type 3/8" Barb, End Type Hose Female, Material Acetal. This version attaches to 3/8" inside diameter fuel hose and serves as the hose-side female fitting for the tank connection.

Installation and fit

Match the fitting to the side of the system being serviced before ordering. The 8873-6 fitting is for the tank side with a 1/4" NPT threaded connection, while the 8890LP6 fitting is for the hose side where a 3/8" barb is needed.

For threaded fuel fittings, use a fuel-compatible thread sealant and avoid over-tightening into the tank fitting boss. For the barbed hose fitting, use fuel hose of the correct inside diameter and secure it with a proper fuel hose clamp. After installation, prime the fuel line and check the connection for leaks before running the engine.

Use on board

These fittings are a practical match for boaters maintaining portable outboard fuel systems on fishing boats, small runabouts, tenders, and other Mercury or Mariner-powered boats. They are especially useful when an old quick-connect fitting no longer locks cleanly, the hose end has been changed, or a spare fuel tank needs to match the existing hose assembly.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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