Mercury – Fuel Line Fitting | Fuel System Component | Brass and Composite | 22831T3

Overview

A reliable fuel connection is key to smooth operation on any classic outboard. The Mercury Marine 22831T3 Fuel Line Fitting is designed specifically for Mercury and Mariner TwoStroke outboards built in 1971 and earlier, giving you the same solid, leak-free connection these engines were built around. With its twist-lock design, it attaches quickly and stays secure, keeping fuel flowing evenly and efficiently. Made with marine-grade brass and composite materials, this fitting stands up to corrosion, vibration, and ethanol-blended fuels — built for boaters who still trust their vintage Mercury to get them home.

Key Features

• Purpose: Provides a dependable, leak-free connection between your portable fuel tank and your outboard.
• Material: Crafted from brass and corrosion-resistant composite for strength and long service life.
• Design: Twist-lock connector allows quick attachment and a tight, fuel-safe seal.
• Performance: Keeps consistent fuel pressure for easier starts and smoother running.
• Compatibility: Fits Mercury and Mariner TwoStroke outboards 1971 and older, excluding 3.9–9.8HP models.
• Ease of Use: Installs easily with standard tools — simple, reliable, and built to last.

Engine & Boat Compatibility

• Designed for Mercury and Mariner TwoStroke outboards built in 1971 and earlier.
• Not compatible with Mercury 3.9–9.8HP engines.
• Works on classic aluminum runabouts, vintage fishing boats, and utility skiffs.
• Safe for use in both freshwater and saltwater environments.

Performance & Practical Benefits

The 22831T3 connector helps keep older outboards performing the way they should. The twist-lock system provides a solid fit that resists vibration and prevents leaks or air intrusion. Once locked in place, it maintains steady fuel flow to the carburetor, ensuring smooth idle and strong acceleration.

Made from durable brass and reinforced composite, this fitting resists corrosion and wear from fuel exposure and saltwater. It’s a small, reliable upgrade that helps your vintage outboard stay easy to start and dependable every trip out.

Why Buy OEM

When dealing with vintage equipment, precision is everything. The Mercury 22831T3 is a genuine OEM part, made to the same specifications as the original fittings used on older Mercury and Mariner models. Aftermarket replacements may not seal properly or could restrict fuel flow, leading to hard starts or inconsistent performance.

With Mercury’s OEM quality, you get the correct fit, tested durability, and materials designed for real marine conditions. It’s the straightforward, factory-approved solution that keeps your classic Mercury running strong for years to come.

FAQ

Q1: Which engines use this fuel line fitting?
It fits Mercury and Mariner TwoStroke outboards 1971 and older, except 3.9–9.8HP models.

Q2: What’s the difference between this and 22831Q3?
Both provide the same connection, but the 22831T3 is typically used as the engine-end fitting, while 22831Q3 is the tank-side connector.

Q3: Can it handle ethanol fuel?
Yes. It’s made from materials that resist ethanol corrosion and swelling.

Q4: Why replace my old connector?
A worn connector can leak or pull air into the line, leading to poor starts and uneven running.

Q5: Why choose Mercury OEM instead of aftermarket?
OEM fittings match the original tolerances and flow rates exactly, ensuring perfect fit and lasting performance.