CheeMuii 78 Pcs DOT Air Line Fittings Kit | Push Lock & 2-in-1 NPT/Quick Connect

Overview

The CheeMuii 78-piece DOT Air Line Fittings Kit is engineered for dependable, field-ready performance. Crafted from CA360 pure brass, these DOT-approved fittings resist corrosion and endure high temperatures, while enabling smooth, leak-minimized connections across common tubing sizes (1/8", 1/4", 3/8", 1/2"). This versatile set is designed for both shop tasks and on-the-road maintenance, so you’re prepared for a range of air line needs.

The 78-piece assortment focuses on real-world practicality, pairing essential tees and straight connectors with push-to-connect options, 90° elbows, inflation valves, plus handy tools, all packaged compactly for quick access in the toolbox or service bay.

Premium build and compliance

CheeMuii DOT fittings meet D.O.T. FMVSS 571.106 and SAE J1131 standards, delivering corrosion resistance, high-temperature ductility, and low permeability. Precision machined threads offer reliable sealing and long service life, helping you work with confidence in demanding environments.

What’s inside

• 18 brass tube tee fittings
• 28 brass straight union connectors
• 14 brass straight push & NPT thread fittings
• 14 brass 90° elbow fittings
• 2 brass inflation Schrader valves
• 2 tube cutters
• 2 Teflon tapes

Easy installation and wide range

The quick-connect design makes push-to-connect installations straightforward, while the pre-applied sealant on NPT male threads improves initial sealing. The kit supports a broad operating window—from vacuum up to 800 PSI and temperatures from -40°F to +248°F (-40°C to +120°C). Always verify tubing specifications for pressure and temperature compatibility.

Applications and benefits

Ideal for air suspension systems, including semi-trucks, trailers, and RVs, this assortment also serves workshop environments needing robust air-line fittings and quick-connect options. Expect dependable performance in routine maintenance, on-the-spot repairs, and temporary line routing in tight spaces.

Materials and durability

Durable CA360 brass components resist corrosion and heavy use, with smooth threads designed for reliable sealing. A practical inclusion of pre-applied sealant helps reduce leak paths during initial setup, while the tactile, solid feel of the fittings supports confident hand-tightening and secure connections.

Why CheeMuii

This kit emphasizes durable brass construction, DOT compatibility, and user-friendly features, aiming to support efficient service and repeatable results. It’s a practical choice for pros and serious DIYers seeking a comprehensive, ready-to-use fittings set across a range of air line applications.

Sizing and compatibility

Sizes include 1/8", 1/4", 3/8", and 1/2" air line fittings. The 2-in-1 design accommodates both NPT threaded and quick-connect hoses for flexible setup across vehicles and workshops.