Vkinman 5/16in Fuel Connector for Nissan/Tohatsu Outboards 5–90HP — Male & Female Plastic

Vkinman 5/16" fuel connector is a direct-fit replacement male and female coupling (3B2-70260-1 / 3B2-70250-1) designed to reconnect fuel lines on Nissan/Tohatsu 2- and 4-stroke outboard engines from 5 to 90 HP.

If your outboard's fuel line connection is cracked, leaking, or worn, this pair of 5/16" plastic connectors restores a secure, leak-resistant joint without cutting or modifying hoses. Manufactured from robust plastic, the set replaces OEM part numbers 3B2-70250-1 (female) and 3B2-70260-1 (male) and is intended for a straightforward swap on compatible Nissan and Tohatsu motors. The design focuses on compatibility, ease of installation, and corrosion-free performance in marine environments.

How do I know this connector fits my outboard?

Check your engine model and existing part numbers against the compatibility list before purchasing. This connector set matches the OEM part numbers listed and fits hoses sized for a 5/16" fuel line on the specified horsepower range.

• Compatible with Nissan/Tohatsu 2- and 4-stroke engines: 5, 6, 8, 9.8, 9.9, 15, 18, 20, 30, 40, 50, 60, 70, 90 HP.
• Replaces parts 3B2-70250-1 (female) and 3B2-70260-1 (male).
• Intended for 5/16" (approx. 8 mm) fuel piping or tubing.
• Measure existing connector diameter and inspect part numbers to confirm fit.

What tools and steps are needed to install it?

Installation is designed to be simple and usually requires only basic hand tools. In many cases the connectors push onto the fuel hose and lock together, eliminating complex procedures or hose modification.

• Tools: utility knife (for clean hose cut), pliers, and a screwdriver if hose clamps are present.
• Steps: drain or clamp fuel line, remove old connector, slide hose onto new male/female pieces, secure with clamp as needed, and test for leaks.
• Estimated time: 10–20 minutes for technicians or familiar boat owners.
• No special sealants or adapters typically required.

What materials and durability can I expect from this replacement?

The connectors are molded from a solid plastic purpose-built for marine fuel applications, offering resistance to fuel, moisture and salt air. While not metal, the chosen plastic helps prevent corrosion and provides a reliable service life when installed and clamped correctly.

• Body: durable injection-molded plastic designed for fuel exposure.
• Performance: resists common marine corrosion and fuel degradation.
• Maintenance: inspect for wear periodically and replace if cracking or leaks appear.
• Intended as a cost-effective OEM replacement part.

Will this connector prevent leaks and fuel smells?

When installed correctly on an appropriate 5/16" hose and secured with hose clamps, the male and female pieces create a tight joint that minimizes leaks and fuel vapor escape. Regular inspection after installation ensures continued sealing performance under vibration and temperature changes.

• Ensure hoses are cut squarely and pushed fully onto the connector.
• Always use corrosion-resistant hose clamps tightened to a snug fit.
• Pressure-test the line with the engine off to confirm no drips or seepage.
• Replace immediately if any cracking or looseness develops.

Who is this for: This Vkinman replacement fuel connector set is suited for boat owners, marine mechanics, and fleet operators who need an affordable, direct-fit repair for Nissan and Tohatsu outboards in the 5–90 HP range. It’s ideal for anyone seeking a simple, non-destructive swap to restore fuel-line integrity without sourcing OEM parts from dealers.