MOELLER 3-3801 Anti Siphon Barb Fuel Tabk Boat 1/4 NPTX3/8

( Brand: Moeller ), ( Part Type: Fuel Aluminum ), ( Manufacturer Part Number: 3-3801 ), ( Replaces: 39729338019 )

Review MOELLER Universal Anti Siphon Barb Aluminum 1/4 Inch Nptx3/8 Fuel Tabk Boat

The Moeller 3-3801 Anti-Siphon Barb is a crucial component in the fuel system of boats, ensuring the proper flow of fuel while preventing the unwanted siphonage of water or air. This barb is designed specifically for use with 1/4 NPTX3/8 inch fuel lines and is made from high-quality brass material, known for its durability and resistance to corrosion.

The Moeller 3-3801 is an anti-siphon device, meaning it is engineered to prevent the backflow of water or air into the fuel line. It utilizes a one-way, self-venting check valve mechanism, which allows fuel to flow in one direction only. This feature is essential to maintain the integrity of the fuel system and prevent potential contamination or damage caused by water or air entering the fuel line.

The barb is equipped with a 3/8 inch NPT thread on both ends, making it compatible with standard fuel line connections. The rounded edges and smooth surface of the threads ensure easy and secure installation, while the brass material provides excellent strength and resistance to wear and tear.

The Moeller 3-3801 Anti-Siphon Barb is designed with a built-in fuel tab or fuel pick-up, which can be adjusted to accommodate different fuel tank configurations. The fuel tab can be positioned to reach the bottom of the fuel tank, ensuring that all the fuel is drawn from the tank and preventing the fuel system from running dry.

This device is an essential component for maintaining the performance and reliability of boat fuel systems, particularly in applications where the fuel tank is located below the fuel line or where the fuel line is subjected to significant changes in elevation. By preventing siphonage and ensuring a constant fuel supply, the Moeller 3-3801 Anti-Siphon Barb helps to ensure a smooth and efficient operation of your boat's engine.

The Moeller 3-3801 Anti-Siphon Barb is a fuel filling device designed for boats, specifically for use with 1/4 NPTx3/8 inch fuel lines. This product is engineered to prevent the siphon effect, ensuring that fuel remains in the tank and does not get drawn into the fuel line when filling or during suction. Here are some pros and cons of purchasing this product:

1. Anti-Siphon Protection: The primary advantage of this product is its ability to prevent siphoning, which can save you from potential fuel spills and the cost of cleaning up.

2. Easy Installation: The Moeller 3-3801 Barb is relatively easy to install, as it requires no tools and can be attached directly to the fuel tank and the fuel line.

3. Durable Design: Made from brass material, this anti-siphon barb is built to last and can withstand the harsh marine environment.

4. Simple Operation: This product does not require any additional parts or components, making it a simple and straightforward solution for preventing siphoning.

1. Limited Compatibility: The Moeller 3-3801 Barb is designed specifically for 1/4 NPTx3/8 inch fuel lines and may not be compatible with other fuel line sizes.

2. Additional Cost: Although the Moeller 3-3801 Barb is a cost-effective solution compared to other anti-siphon devices, it still adds an additional expense to the overall cost of maintaining a boat.

In conclusion, the Moeller 3-3801 Anti-Siphon Barb offers a simple, effective, and durable solution to prevent siphoning in boats with 1/4 NPTx3/8 inch fuel lines. Its ease of installation, durability, and anti-siphon protection make it a valuable investment for boat owners. However, its limited compatibility and additional cost should be considered before making a purchase. If you own a boat with a compatible fuel line size, the benefits of this product outweigh the costs, making it a recommended purchase.

Details:

Fuel: Tank-Filter-Sender-Parts. Below the price of item. Condition: New. We answer questions quickly.

Universal Anti Siphon Barb Aluminum 1/4 NPTx3/8 Fuel Tabk Boat: Thumbnails to: PRODUCT SPECIFICATIONS: Brand: Moeller. Boat Outboard Engine Parts. Boat Inboard I/O Engine Parts. HAZARDOUS PRODUCTS HAZMAT: 1 Carriers charge extra to ship packages with products they consider hazardous, such as oils, paints, and primers.

Boat Accessories: Deck-Cabin. Manufacturer PN: 3-3801

part #: 33801 prices

• $15.20-$17.71

specifications vesselveep:

• brand: Moeller
• part type: Fuel Aluminum
• manufacturer part number: 3-3801
• replaces: 39729338019

payments vesselveep:

• credit card: Mastercard
• other
• wallet: Apple-pay

seller vesselveep:

• # reviews: 73305
• city: Hollywood, Florida
• rating: 98.7%

offer vesselveep:

• started: October 13, 2025
• availability: In Stock
• sold: 0
• options: Ship-to-home
• quantity: 3

general vesselveep:

• Parts Accessories > Boat Parts > Other
• condition: New

returns vesselveep:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

shipping vesselveep:

• transit: 5-11 Days
• type: Calculated
• service: USPS First Class, USPS Priority Mail, UPS Ground, USPS Priority Mail Express
• cost: $5.15
• class: Standard, Expedited
• carrier: USPS, UPS

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