CheeMuii 3/8" DOT Air Line Kit — 32.8 ft PA12 Hose with CA360 Brass Fittings, DOT‑Approved High‑Temp Durability

CheeMuii 3/8" DOT Air Line Kit includes a 32.8 ft PA12 DOT-approved air hose and a complete set of CA360 brass DOT fittings for durable, high-pressure pneumatic connections.

This kit bundles a long-length 3/8" DOT air line made from Polyamide 12 (PA12) with a selection of CA360 brass fittings engineered to meet DOT FMVSS 571.106 and SAE air-brake requirements. It’s built for high-pressure applications, temperature extremes, and frequent use—packaged with installation accessories so you can route, join, and repair air lines quickly.

What does the kit contain and why does each part matter?

The kit supplies everything needed to create or repair 3/8" DOT-style air lines: hose, tees, unions, push-fit connectors, elbows, a cutter, and Teflon tape. Each item is matched to the system to reduce leak points and simplify installation.

• 32.8 ft of 3/8" PA12 DOT air hose, resistant to abrasion and high pressure.
• Two 3/8" CA360 brass tube tees and two brass straight unions for secure branching and inline joins.
• Four brass straight push connectors and four 90° brass elbows with NPT threads for common fittings.
• Tube cutter and Teflon tape included for clean cuts and reliable thread seals.

How tough is the hose and can it handle harsh conditions?

The CheeMuii PA12 hose is engineered to withstand impact, wear, and varying temperatures while retaining flexibility for routing. It is rated for operation from -40°F to +248°F and can withstand working pressures up to the kit’s specified limits when installed per manufacturer guidance.

• PA12 construction offers chemical and abrasion resistance for longer life.
• Temperature tolerance spanning very cold to high-heat environments.
• Designed for higher working pressures and compatible with pneumatic systems.

Are the fittings corrosion-resistant and suitable for brake or suspension lines?

Yes—fittings in this kit are precision-machined from CA360 brass and meet DOT FMVSS 571.106 and SAE J1131 specifications, providing strong corrosion resistance and dimensional stability. They’re intended for DOT-style air systems such as trailer brakes or suspension connections when installed correctly.

• CA360 brass offers low permeability and durable thread integrity.
• DOT/SAE compliance reduces risk of premature failure in air systems.
• Brass push and NPT-style connectors simplify leak-free joints.

How easy is installation and what tools are included?

Installation is straightforward for someone comfortable with pneumatic lines: cut the hose square, use the included fittings and Teflon tape on threaded joints, and push or thread connections as required. The kit supplies the basic tools and fittings for most on-vehicle or workshop repairs.

• Included tube cutter lets you make clean, accurate hose ends.
• Teflon tape ensures better thread sealing on NPT connectors.
• Push-fit connectors and unions speed up assembly without extra clamps in many cases.

Who is this for: This kit is designed for vehicle owners, fleet mechanics, RV and trailer technicians, and workshop professionals who need a DOT-compliant 3/8" air line system. It’s suitable for air suspension work, semi truck or trailer air-brake repairs, towing and mower line fixes, or general industrial pneumatic plumbing where dependable, rated components are required.