CASIFAVI Fuel Line Quick-Connect Kit 24pc — PA12 Nylon Push-On Fuel Fittings, Assorted 5/16 & 3/8

CASIFAVI Fuel Line Quick Connect Kit is a 24-piece set of durable PA12 nylon push-on fuel fittings designed for fast, leak-resistant connections across common 7.89mm–9.89mm fuel tubing sizes.

Whether you're repairing, upgrading, or building fuel, vacuum, or low-pressure fluid lines, this compact kit supplies three connector styles and nine size combinations so you can match tubing diameters without cutting corners. Each component is made from military-grade PA12 nylon in one-piece construction, combining strength, chemical resistance, and low weight for automotive, marine, lawn equipment, or DIY workshop use.

Which connectors are included and how do I match them to my tubing?

The kit contains 24 fittings divided into 90° elbow, straight female quick-connect, and male quick-connect barbed types, sized to fit 7.89mm, 9.49mm, and 9.89mm tubing with an 8mm standard reference. Choose the connector type that matches the routing and mating part on your system: elbows for tight bends, straights for inline runs, and male connectors for female quick-disconnect ports.

• 90° elbow: two each of 7.89×8mm, 9.49×8mm, 9.89×8mm.
• Straight female quick-connect: two of each size (7.89, 9.49, 9.89×8mm).
• Male quick-connect barbed: four of each size for secure push-fit joins.

How do these quick-connect fittings install and remove?

Installation is push-to-lock: slide tubing over the barbed shank until it seats, and the internal locking mechanism secures the joint instantly. A one-button release allows controlled disconnection—press the collar and pull the tube out—so you spend less time on repetitive assembly tasks.

• Push-on barbed design for immediate hold without clamps in many low-pressure systems.
• Single-button release mechanism for safe and quick removal.
• Claims up to 80% faster installation time compared to conventional fittings.

Are these fittings reliable against leaks and harsh conditions?

Yes—CASIFAVI builds in a triple-seal approach: an O-ring, axial compression, and radial locking combine for robust sealing. The PA12 nylon body resists fuels, oils, and environmental corrosion, and pressure-tested construction reduces risk of seepage in routine applications.

• Triple-seal design (O-ring + axial compression + radial locking) for leak resistance.
• Pressure-tested components suitable for low-pressure fuel or vacuum lines.
• PA12 nylon offers high tensile strength and chemical resistance for longer life.

What sizes and counts come in this 24-piece kit?

The kit is organized to cover commonly used tubing diameters with multiple connector styles so you can tackle a range of tasks without additional purchases. Counts are balanced to give you spare male connectors for typical mating needs.

• Three size options: 7.89mm, 9.49mm, 9.89mm (all referenced to 8mm tubing).
• Total: 24 pieces — a mix of elbows, straight females, and male quick-connects.
• Designed for flexible use across automotive, marine, small-engine, and DIY fluid systems.

Who this is for: The CASIFAVI Fuel Line Quick Connect Kit suits mechanics, boat owners, small-engine technicians, and hobbyists who need a compact, versatile assortment of nylon quick-connects for fuel, vacuum, or low-pressure fluid lines. It’s ideal if you want quicker assembly, fewer leaks, and components built to resist chemicals and corrosion—without sourcing multiple single-size parts. Keep this kit in the garage or service van for fast repairs, prototyping, or maintenance tasks where reliable, repeatable connections matter.