CheeMuii 15FT Coiled 7-Way Trailer Cord & Air Brake Hose Assembly — DOT Brass Fittings, PA12 Nylon

CheeMuii 15FT Coiled 7 Way Trailer Cord & Air Brake Hoses Assembly is a heavy-duty replacement cable and coiled air line kit that combines a 7-way electrical cord with DOT-compliant brass fittings and reinforced PA12 nylon air hoses for reliable trailer power and braking connections.

This assembly pairs a 15-foot coiled 7-way electrical power cord and matching coiled air brake hoses, built to meet OEM-style specifications for towing safety and convenience. The components use high-conductivity pure copper conductors, corrosion-resistant brass fittings, stainless-steel spring guards, and a three-layer molded PA12 nylon hose for durability and consistent performance under road conditions.

How does this kit keep trailer lights and signals working reliably?

The 7-way electrical cord uses pure copper conductors and robust insulation to minimize voltage drop and maintain clear signal transfer to trailer lights. That ensures consistent operation of turn signals, brake lights, and auxiliary power circuits while towing.

• High-purity copper wiring for improved conductivity
• 15-foot coiled length gives reach with compact storage
• Durable jacket resists abrasion and weather exposure
• Compatible with common 7-way towing sockets and connectors

Are the air hoses safe and compliant for trailer air brakes?

The coiled air hoses are molded from PA12 nylon in a three-layer process for uniform wall thickness and high burst resistance. Fittings are CA360 brass meeting DOT FMVSS 571.106 and SAE requirements, providing corrosion resistance and long service life without compromising air system integrity.

• PA12 nylon construction with three-layer molding for strength
• DOT-approved 1/2" CA360 brass air fittings for compliance
• High burst pressure and low permeability for secure braking
• Stainless-steel spring guards protect hose ends from kinking

What makes this assembly easy to install and maintain?

The coiled design keeps hoses tidy and reduces drag when not fully extended, while stainless-steel springs on both ends protect the connections during coupling and uncoupling. The kit follows OEM dimensions and wiring standards so it plugs into most 7-way and air brake setups without modification.

• Coiled configuration minimizes hose sag and road wear
• Spring-jointed ends cushion connectors and prevent bend damage
• Designed to match OEM wiring and hose specifications for direct replacement
• Includes universal-fit fittings compatible with standard trailer hardware

Can this replace popular OEM parts and which models match?

This CheeMuii assembly is intended as a direct-style replacement for many common OEM part numbers, built to SAE J844 and SAE J2394 where applicable. The product lists cross-references to well-known replacement codes so you can swap without custom adapters.

• Air hose replaces parts like Tectran 17215 and Tremec Sloan 451036N
• Electrical cord fits replacements such as Philips 30-4621 and Velvac 590161
• Manufactured to OEM tolerances for plug-in replacement
• Cost-effective alternative to dealer-priced originals

Who is this for: road-service technicians, commercial fleet managers, and owner-operators who need a robust, ready-to-install trailer cord and air line assembly that meets DOT and SAE norms. It’s suited for heavy towing applications where reliability, easy installation, and corrosion-resistant hardware are priorities. If you want an OEM-style replacement kit that reduces downtime and resists common road wear, this CheeMuii assembly is designed for that purpose.