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Semi-Truck Safety Universal

Check out our top-notch semi-truck universal safety products at 4 State Trucks. From durable placard holders to reliable reflective tapes and sturdy air hoses, we've got your safety covered. Need a new coupler or a pogo stick? We have those too. Equip your rig with the best gear and stay safe on the road!

Shop Semi Truck Safety Parts & Accessories

Stay prepared with essential emergency equipment for your semi truck. We stock heavy-duty truck safety accessories and parts needed to ensure your commercial vehicle meets strict FMCSA and DOT regulations. Made to be durable and with universal fitment across semi-truck make/models, adding the right aftermarket safety hardware can prevent out-of-service violations with proactive maintenance.

Critical Safety Parts for Air Brakes & Pneumatic Components

Support your rig’s stopping power and stay DOT compliant with aftermarket semi truck air dryers and cartridges, control valves to regulate flow between the tractor and trailer, and air pressure monitoring systems for real-time, accurate reads on system pressure.

Secure Tractor-Trailer Hookups

Secure your back of cab setup with coiled lines, gladhands, and organizational support hardware, like pogo sticks and stainless-steel airline box backplates.

Roadside Emergency Compliance Equipment

Explore a wide selection of FMCSA regulation-backed compliance equipment like fire safety products, hazard management items like duo-flip placard holders to label toxic materials, or DOT-C2 reflective tape with self-adhesive reflectors to ensure safety during roadside inspections and emergency repairs. You can also find a variety of maintenance hardware, like brass compression fittings or nylon wire ties, and professional supplies, like respirator masks for detailed paint or polishing work.

Tractor-Trailer Electrical System & Wiring Setup

Find everything you need to properly connect and power the trailer’s lights and ABS system with aftermarket cables and cords, including 7-way Green ABS coiled cables, and straight cable assemblies. Organize your 12- to 14-gauge electrical wire with bulk wire rolls. Quickly replace damaged ABS sensors (straight and 90-degree) in various lengths (18" to 96") and maintain the Anti-lock Braking System's functionality.

Introducing the Official 4 State Trucks Mobile App – Gear Up On the Go!