EilxMag Air Line Kit for Truck Air Spring Suspension — 30 ft PA12 Hose with Brass Fittings & Schrader Valves

EilxMag's Air Line Kit is a complete 30-foot PA12 air hose and fittings set designed to connect and service air spring bags on semi truck trailers reliably.

This kit bundles DOT-compliant nylon (PA12) 1/4" air line with brass fittings, schrader inflation valves, a union tee and a plastic cutter to provide a durable, ready-to-install plumbing solution for airbag suspension systems. Everything is sized for standard 1/4" OD tubing and 1/4 NPT ports so you can route, join and inflate air springs without hunting for individual parts. The components are chosen to resist wear, impact and corrosion for heavy-duty road use.

What components are included and what do they do?

The kit contains all the basic parts needed to run and maintain an air spring line: 30 feet of PA12 air hose, two brass schrader valves, two 90° swivel elbow fittings, one push-to-connect straight fitting, one union tee, and a plastic tubing cutter. Each item is selected for compatibility with 1/4" OD tubing and standard 1/4 NPT ports.

• 30 ft black PA12 1/4" air line — flexible routing and abrasion resistance.
• Two brass 1/4" schrader valves with caps — manual inflation points and protection.
• Two 1/4" OD x 1/4 NPT swivel elbow fittings — easier connection in tight spots.
• One 1/4" union tee — tie multiple airbags for a single feed line.
• One plastic tubing cutter — clean, reliable hose end cuts for leak-free connections.

How does the PA12 hose meet DOT and SAE requirements?

The supplied hose is manufactured from PA12 polyamide, chosen for its balance of flexibility, wear resistance and impact toughness. It is produced to meet DOT standards and SAE J844 requirements for air brake system lines, making it suitable for suspension air circuits when routed and installed correctly.

• PA12 material performs well under road abrasion and repeated flexing.
• Meets DOT and SAE J844 expectations for air brake-line-type construction.
• Resistant to common oils, fuels and road contaminants encountered on trailers.

Are the fittings compatible with standard air spring ports and how are they installed?

Fittings are brass and sized to work with 1/4" OD hose and 1/4 NPT threaded ports. The elbow fittings swivel 360 degrees to simplify alignment; the push-to-connect straight fitting gives a quick seal for push-in hose ends. Use thread sealant or tape on NPT threads and trim hose ends square with the cutter for leak-free joins.

• Brass 1/4 NPT male threads fit common air spring and valve ports — use thread sealant.
• 360° swivel elbows reduce stress at connection points and ease routing.
• Push-to-connect fitting allows tool-free hose insertion and secure hold.

What maintenance or replacement needs does this kit address?

This kit supplies parts typically needed when replacing worn tubing, adding a manual inflation point, or tying multiple air springs into a single feed. Carrying the kit or installing it during a service visit reduces downtime and simplifies standard upkeep of trailer air suspension plumbing.

• Quickly replace cracked or hardened lines to stop leaks and restore system integrity.
• Add or replace schrader valves for easier field inflation or leak testing.
• Create a consolidated air path with the union tee to balance multiple airbags.

Who is this for: Fleet technicians, owner-operators and trailer shops looking for a DOT-compliant, durable air plumbing kit to repair or upgrade airbag suspension lines. The EilxMag kit is geared toward users who need a complete, ready-to-install set of hoses and fittings sized for 1/4" systems, with materials selected for heavy-duty road service rather than light DIY-only applications.