CheeMuii 12 Pcs 1/4 Brass DOT Air Fittings With 50 FT 1/4"

CheeMuii's kit supplies a 50-foot DOT-approved 1/4" PA12 air line plus 12 brass DOT fittings and accessories for reliable pneumatic and air-suspension connections.

This complete assembly pairs a reinforced 1/4" Polyamide 12 (PA12) DOT air hose with a selection of CA360 brass DOT fittings engineered for vehicle and industrial use. The components meet DOT FMVSS 571.106 and SAE standards, offering a corrosion-resistant solution for air brake, suspension, towing, and workshop pneumatic repairs. The set includes tees, unions, push-fit and NPT-thread connectors, elbows, a tube cutter and thread tape so you can install or patch lines quickly.

How does this kit hold up under pressure and temperature swings?

The hose and fittings are rated for demanding environments: the PA12 tubing resists high pressure and the CA360 brass fittings tolerate wide temperature ranges. Together they provide long-term service life when used within manufacturer-recommended limits.

• Working pressure range: vacuum to 500 PSI (follow tubing specs)
• Temperature tolerance: -40°F to +248°F (-40°C to +120°C)
• Materials: PA12 tubing for toughness and CA360 brass fittings for corrosion resistance
• Reinforced construction for impact and wear resistance

Which parts are included and how will they speed an on-the-road repair?

This kit contains the common fittings and tools needed for fast, effective connections or emergency fixes—no extra trips to the hardware store. The included tube cutter and Teflon tape let you size and seal hose runs on the spot.

• 50 ft of 1/4" DOT PA12 air hose for long runs or spare routing
• 2 brass 1/4" tube tee fittings and 2 straight union connectors
• 4 brass straight push-to-connect with NPT thread and 4 NPT elbow fittings
• 1 tube cutter and 1 roll of Teflon tape for clean cuts and leak-resistant threads

Is this safe to use on trucks, trailers and RV air systems?

The components comply with DOT and SAE recommendations for many vehicle air systems, making them suitable for repairs and installations when matched to the correct size and specifications. Always verify compatibility with your vehicle’s system and follow recommended installation practices.

• Meets D.O.T. FMVSS 571.106 and SAE J844/J1131 where applicable
• Designed for air suspension, brake line patching, trailer and RV air systems
• Use proper fittings and thread sealing for safe, leak-free joints
• Check tubing manufacturer notes for pressure/temperature limitations

How easy is installation for DIYers and technicians?

Installation is straightforward with basic pneumatic knowledge: cut the tube cleanly, insert push-fit or secure NPT connections with tape, and route the hose away from heat and abrasion. The kit's combination of push-fit and threaded fittings accommodates quick repairs and permanent installations.

• Push-fit connectors allow fast, tool-free tubing insertion
• NPT fittings tighten with thread tape for durable threaded joints
• Tube cutter provides precise, burr-free hose ends for better seals
• Reinforced hose keeps shape under bends while remaining flexible

Who this kit is for: CheeMuii’s 12-piece DOT air fittings and 50 ft PA12 line suit truck drivers, fleet mechanics, RV owners, trailer maintenance technicians, and DIYers who need a ready-to-use set for air-suspension, brake-line patches, or general pneumatic plumbing. It’s intended as a practical repair and installation kit—select parts that match your system’s specifications and follow all safety guidelines during use.