CASIFAVI Fuel Line Quick Connect Kit — 24‑Piece Assorted 5/16 & 3/8 PA12 Nylon Push‑On, Triple‑Seal

CASIFAVI Fuel Line Quick Connect Kit is a 24-piece set of PA12 nylon push-on fuel fittings in assorted straight, mini-straight and 90° elbow styles for 5/16" and 3/8" (approximately 7.89–9.89mm × 8mm) tubing.

This kit bundles three connector types and nine size combinations so you can make fast, leak-resistant fuel line connections without threaded adapters. Each fitting is molded from high-strength PA12 nylon with a triple-seal arrangement (O-ring, axial compression, radial locking) and a one-button release, letting you attach or detach hoses quickly while maintaining pressure integrity. The 24 included pieces cover common OEM-style tubing diameters used in small engines, lawn equipment, marine rigs, and automotive vacuum or fuel systems.

How does the CASIFAVI kit speed up installations?

The push-to-lock barb and single-button release reduce installation time and fumbling for wrenches. These fittings seat instantly and lock mechanically, cutting connection time versus threaded or clamp-style joints.

• Push-on barb design for immediate seating and secure hold.
• One-button quick release for fast disassembly without tools.
• Pre-measured assortment means fewer trips to the parts store.
• Up to 80% faster installation compared with traditional fittings.

What sizes and connector types are included in the 24-piece set?

The kit supplies nine combinations across three connector forms—90° elbow, straight female quick-connect, and male quick-connect—covering the most used small-diameter fuel tubing sizes. Quantities are optimized for repair and small project use.

• 90° elbow connectors: 2 each of 7.89mm×8mm, 9.49mm×8mm, 9.89mm×8mm.
• Straight female quick-connects: 2 each of 7.89mm×8mm, 9.49mm×8mm, 9.89mm×8mm.
• Male quick-connects: 4 each of 7.89mm×8mm, 9.49mm×8mm, 9.89mm×8mm.
• Total: 24 precision-molded PA12 nylon fittings in one compact kit.

Are these fittings reliable for leak-prone fuel systems?

CASIFAVI designed the connectors with a triple-seal system to minimize the risk of leaks under typical operating pressures. Each part has been pressure-tested and features corrosion-resistant nylon construction to withstand fluid exposure and vibration common in engine bays.

• Triple-seal: O-ring, axial compression, and radial locking for redundancy.
• PA12 nylon resists chemical attack and environmental corrosion.
• One-piece molding reduces weak joints and improves durability.
• Pressure-tested for consistent sealing performance in routine applications.

Who is this for? The CASIFAVI Fuel Line Quick Connect Kit is aimed at mechanics, DIYers, small-engine technicians, and marine hobbyists who need a compact, reliable assort­ment of quick-connect fuel fittings. It’s well suited for repair shops and mobile technicians who value time-saving, serviceable connections, and for anyone maintaining lawn mowers, ATVs, motorcycles, small boats, or aftermarket vacuum/fuel lines. If you work with 7.89–9.89mm × 8mm tubing and prefer push-on reliability over threaded adapters, this kit provides the common connector types and sizes in a single ready-to-go package.