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Safety

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!
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • FREE SHIPPING OVER $249
    Mini Air Regulator W/ Aah Gauge

    Mini Air Regulator W/ Aah Gauge

    VELVAC

    $107.99
    Mini Air Regulator* High Quality Air Regulator With Gauge* Sold Individually* Warranty On Mini Air Regulator Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...
    320149
    SKU:
    320149
    Truck Class:
    Universal
    Rating:
    125 PSI
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    $107.99
    Qty in Cart: 0
    Price:
    $107.99
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD 4 Way 2 Position Air Solenoid Valve 12V 20-130 PSI

    TPHD 4 Way 2 Position Air Solenoid Valve 12V 20-130 PSI

    TPHD

    $139.99
    Heavy Duty Solenoid Air ValveThis air solenoid valve is designed for efficient control of pneumatic systems, ensuring optimal performance.* High Quality Air Solenoid Valve* 4 Way* 2 Position*...
    29SS4
    SKU:
    29SS4
    Location:
    Made In USA
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    $139.99
    Qty in Cart: 0
    Price:
    $139.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    SL4 Stop Light Switch - Replaces Bendix 22860, Meritor R95522860N, Velvac036036

    SL4 Stop Light Switch - Replaces Bendix 22860, Meritor R95522860N, Velvac036036

    AUTOMANN USA

    Now: $8.07
    Was: $11.53
    SL4 Stop Light Switch* High Quality Stop Light Switch* 2 Terminal* Activates 5 PSI* Normally Open 1/4 In NPT* Sold Individually* Warranty On Stop Light Switches Against Defects In Workmanship &...
    29-071055
    SKU:
    29-071055
    Truck Class:
    Heavy Duty
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    Now: $8.07
    Was: $11.53
    Qty in Cart: 0
    Price:
    Now: $8.07
    Was: $11.53
    Subtotal:
  • 12V Receiver Dryer Replaces F4HS2A131CA, DA33100, DA33100X, N4250, 2016744C91, 2016744C92, 713013419

    12V Receiver Dryer Replaces F4HS2A131CA, DA33100, DA33100X, N4250, 2016744C91, 2016744C92, 713013419

    AUTOMANN USA

    $505.99
    Receiver Dryer- 12VEnsure clean, dry air flow throughout your braking and suspension systems with the 12V Receiver Dryer Replacement for Pure Air Plus systems. Designed to replace multiple OEM part...
    29-070008
    SKU:
    29-070008
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $505.99
    Qty in Cart: 0
    Price:
    $505.99
    Subtotal:
  • Stainless Steel Air Dryer Wrap For Bendix AD-SP 1995-Newer

    Stainless Steel Air Dryer Wrap For Bendix AD-SP 1995-Newer

    PHOENIX DESIGN

    $34.06
    Stainless Steel Air Dryer Wrap For Bendix AD-SP 1995-Newer* High Quality Air Dryer Wrap* Made Of 304 Stainless Steel* Sold Individually* Made In USA* Warranty On Air Dryer Wrap Against Defects In...
    29-070000039
    SKU:
    29-070000039
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $34.06
    Qty in Cart: 0
    Price:
    $34.06
    Subtotal:
  • FREE SHIPPING OVER $249
    Quick Release Air Valve QR1C Type Replaces 289714, 1676745C1, 20QE2288, KN32041

    Quick Release Air Valve QR1C Type Replaces 289714, 1676745C1, 20QE2288, KN32041

    AUTOMANN USA

    $26.71
    Air Valve QR1C Quick ReleaseEnhance braking efficiency with this Quick Release Air Valve QR1C. Featuring 3/8-inch delivery ports and 1/4-inch control and balance ports, it ensures rapid air response...
    289714
    SKU:
    289714
    Length Options:
    3 Inch
    Truck Class:
    Heavy Duty
    Diameter Options:
    3/8 Inch
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    $26.71
    Qty in Cart: 0
    Price:
    $26.71
    Subtotal:
  • PP7 Type Push Pull Air Control Valve Releases At 40 PSI- Replaces 287280BXW, EBN288239N

    PP7 Type Push Pull Air Control Valve Releases At 40 PSI- Replaces 287280BXW, EBN288239N

    AUTOMANN USA

    $30.30
    Air Control Valve Works With Tractor Protection SystemReplace worn air valves with the PP7 Type Push Pull Air Control Valve. Built to release at 40 PSI, it supports proper tractor projection system...
    288239
    SKU:
    288239
    Truck Class:
    Heavy Duty
    Product Type:
    Air, Electrical, & Safety
    $30.30
    Qty in Cart: 0
    Price:
    $30.30
    Subtotal:
  • Bendix Type PP8 Dash Control Valve - Replaces 287567BXW, KN20035, 287238N

    Bendix Type PP8 Dash Control Valve - Replaces 287567BXW, KN20035, 287238N

    AUTOMANN USA

    $42.03
    Push-Pull Dash Control ValveAchieve dependable air brake operation with the Bendix Type PP8 Dash Control Valve, designed as a replacement for 287567BXW, KN20035, and 287238N. Its push-pull mechanism...
    287238
    SKU:
    287238
    Truck Class:
    Heavy Duty
    Product Type:
    Air, Electrical, & Safety
    $42.03
    Qty in Cart: 0
    Price:
    $42.03
    Subtotal:
  • Air Valve RE6 Emergency Relay

    Air Valve RE6 Emergency Relay

    AFTERMARKET

    $76.99
    Emergency Relay Air ValveTrust your air system with the RE6 Emergency Relay Air Valve, designed to deliver fast and reliable air control when it matters most. This premium emergency relay valve...
    281865
    SKU:
    281865
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $76.99
    Qty in Cart: 0
    Price:
    $76.99
    Subtotal:
  • FREE SHIPPING OVER $249
    DC-4 Type Two-Way Check Air Valve With 2 Supply Ports

    DC-4 Type Two-Way Check Air Valve With 2 Supply Ports

    AUTOMANN USA

    $25.55
    Air Brake DC4 Double-Check Valve With 1 - 3/8 Inch NPT Female & 1- 3/8 Inch NPT Male Supply PortKeep your truck's pneumatic system operating smoothly with the DC-4 Type Two-Way Check Air Valve...
    280809N
    SKU:
    280809N
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $25.55
    Qty in Cart: 0
    Price:
    $25.55
    Subtotal:
  • FREE SHIPPING OVER $249
    DC-4 Type Two-Way Check Air Valve With Mounting Ear

    DC-4 Type Two-Way Check Air Valve With Mounting Ear

    AUTOMANN USA

    $22.50
    Air Brake DC4 Double-Check Valve With 2 3/8 Inch NPT Female Supply PortsWhen precise airflow is needed in your truck's pneumatic network, the DC-4 Two-Way Check Air Valve stands out. Featuring a 4...
    278614N
    SKU:
    278614N
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $22.50
    Qty in Cart: 0
    Price:
    $22.50
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD D2 Type Governor Air Valve

    TPHD D2 Type Governor Air Valve

    TURNPIKE TRUCK TRIM

    $21.23
    Air Valve D2 Governor By TPHDKeep your heavy-duty truck safe and efficient with the TPHD D2 Type Governor Air Valve. Designed for 100 PSI cut-in and 120 PSI cut-out, it comes with gasket and plugs...
    275491P
    SKU:
    275491P
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    $21.23
    Qty in Cart: 0
    Price:
    $21.23
    Subtotal:
  • FREE SHIPPING OVER $249
    Quick Release Air Valve QR1 Replaces 229860, KN32011

    Quick Release Air Valve QR1 Replaces 229860, KN32011

    AUTOMANN USA

    $11.43
    Air Valve QR1 Quick ReleaseEnsure your air system operates efficiently with this Quick Release Air Valve QR1. Designed with 1/2-inch ports for precise airflow control, this valve allows rapid air...
    229860
    SKU:
    229860
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    $11.43
    Qty in Cart: 0
    Price:
    $11.43
    Subtotal:
  • FREE SHIPPING OVER $249
    3/8 Inch NPT Air Brake Quick Release Valve QR1 Type Replaces 229859, 288521, 1676706C1, 745229859, KN32005

    3/8 Inch NPT Air Brake Quick Release Valve QR1 Type Replaces 229859, 288521, 1676706C1, 745229859, KN32005

    TRAMEC SLOAN

    $12.17
    3/8 x 3/8 Inch NPT 1 PSI Quick Release Air Brake ValveThe Release Valve is designed to quickly release air, allowing for a faster response in the system. When the brakes are applied, it speeds up the...
    229859
    SKU:
    229859
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    $12.17
    Qty in Cart: 0
    Price:
    $12.17
    Subtotal:
  • FREE SHIPPING OVER $249
    Nyk Corrosion Preventive Compound - 2 Ounce Tube

    Nyk Corrosion Preventive Compound - 2 Ounce Tube

    SPECTRO WIRE

    $8.31
    2 Oz NYK Corrosion Preventive Compound Tube* High Quality Preventive Compound* Specially Formulated Nonconductive Sealant And Corrosion Preventative For All Types Of Electrical Contacts And Switches*...
    13840
    SKU:
    13840
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $8.31
    Qty in Cart: 0
    Price:
    $8.31
    Subtotal:
  • Air Tank 9.625 X 24.0 Inch - 7 Ports - 8075916 For Volvo VN/VNL

    Air Tank 9.625 X 24.0 Inch - 7 Ports - 8075916 For Volvo VN/VNL

    AFTERMARKET

    $356.99
    Air Tank With 7 SAE Ports Fits Volvo VNL Gen I, VNL Gen II & VNM* High Quality Air Tank* Single Chamber* Made Of Steel* Meets SAE J10 And FMVSS 121 Standards* Black Phosphate Coating* Dimensions:   -...
    13-051400
    SKU:
    13-051400
    Diameter Options:
    9 Inch
    Color:
    Black
    Truck Class:
    Heavy Duty
    Length Options:
    24 Inch
    Material Options:
    Steel
    Make:
    Volvo
    Product Type:
    Air, Electrical, & Safety
    $356.99
    Qty in Cart: 0
    Price:
    $356.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Trailer Air Valve Spring Brake Control Replaces RSL110500

    Trailer Air Valve Spring Brake Control Replaces RSL110500

    AUTOMANN USA

    $48.49
    Air Valve Spring Brake ControlMaintain precise trailer braking with the Trailer Air Valve Spring Brake Control. This high-quality air valve features dual 3/8-inch NPT delivery ports, a 3/8-inch NPT...
    110500
    SKU:
    110500
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $48.49
    Qty in Cart: 0
    Price:
    $48.49
    Subtotal:
  • On Sale
    FREE SHIPPING OVER $249
    Cartridge Kit For ADSP/ ADIS Wabco Air Dryers

    Cartridge Kit For ADSP/ ADIS Wabco Air Dryers

    AUTOMANN USA

    Now: $22.31
    Was: $31.87
    12V Cartridge Kit Fits ADSP/ ADIS Wabco Air DryersOptimize your ADSP/ADIS Wabco air dryer with this high-quality Cartridge Kit, designed to replace OEM numbers 109994, 5008414, 1699595C1, 745109994,...
    109994
    SKU:
    109994
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Now: $22.31
    Was: $31.87
    Qty in Cart: 0
    Price:
    Now: $22.31
    Was: $31.87
    Subtotal:
  • FREE SHIPPING OVER $249
    Cartridge Kit For AD9 Air Dryer Replaces 107794, 107794X, 107796, 107797, 109756X, 1688515C91, 745107796, ADC2000, 1093795

    Cartridge Kit For AD9 Air Dryer Replaces 107794, 107794X, 107796, 107797, 109756X, 1688515C91, 745107796, ADC2000, 1093795

    AUTOMANN USA

    $49.59
    Cartridge Kit Fits Air DryerReplace worn or old cartridges with this premium AD9 Air Dryer Cartridge Kit, designed to fit OEM numbers 107794, 107794X, 107796, 107797, 109756X, 1688515C91, 745107796,...
    107796
    SKU:
    107796
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $49.59
    Qty in Cart: 0
    Price:
    $49.59
    Subtotal:
  • FREE SHIPPING OVER $249
    Air Valve R14H Relay- 4 PSI

    Air Valve R14H Relay- 4 PSI

    AUTOMANN USA

    $48.50
    Air Valve R14H Relay Replaces 103010, 103834, 104574, 166540C91Maintain efficiency and safety in your truck's air system with the R14H Air Valve Relay, rated at 4 PSI crack pressure. With 1/4-inch...
    103010
    SKU:
    103010
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $48.50
    Qty in Cart: 0
    Price:
    $48.50
    Subtotal:
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Adding your products to cart

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.

Frequently Asked Questions About Universal Safety

What kinds of products are included in this category?

This category covers general safety equipment and accessories used in and around semi-trucks, such as warning triangles, road flares, fire extinguishers, first aid kits, wheel chocks, safety vests, and similar items that help drivers stay prepared for roadside emergencies and everyday safety needs.

Will these safety items meet DOT requirements?

Many of the items in this category, such as warning triangles and fire extinguishers, are designed to align with common DOT expectations for emergency equipment. However, requirements can vary by state, vehicle type, and cargo, so we recommend checking current DOT regulations or consulting your fleet safety officer to confirm a specific product meets the requirements for your operation.

Are these products universal, or do they fit specific truck makes and models?

Because these are general safety accessories rather than vehicle-specific parts, most items are designed to work across different truck makes and models. Mounting brackets or storage cases, where applicable, are typically made to fit a wide range of cabs, but we suggest checking individual product listings for any size or mounting details before ordering.

How should I store and maintain this equipment in my truck?

Safety equipment should be stored somewhere easily accessible in an emergency, such as under the seat, in a door pocket, or in a dedicated storage case. Items like fire extinguishers and first aid kits should be checked periodically for expiration dates, pressure levels, or general wear, and replaced or restocked as needed to make sure they are ready to use when needed.

How often should I replace or restock these safety items?

This depends on the specific product. Fire extinguishers usually have a gauge or indicator showing when they need to be serviced or replaced, first aid kits should be restocked after use or when supplies expire, and reflective triangles or flares should be inspected regularly for cracks, fading, or damage. Checking your equipment during routine truck inspections is a good habit to help keep everything ready for use.


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