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Safety-Air-Electrical

Shop semi truck gladhands, air tanks, semi-trailer cords, 7-way receptacles and more. We stock premium aftermarket replacement air system and electrical components to maintain your truck’s critical air line connections.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • PLC Standpipe Run Tee 1/4 X 1/4 X 3/8 Inch

    PLC Standpipe Run Tee 1/4 X 1/4 X 3/8 Inch

    AUTOMANN USA

    $13.71
    PLC Standpipe Run Tee 1/4 X 1/4 X 3/8 Inch* High Quality Standpipe Run Tee* Composite Body * With Brass Collet* (2) 1/4In Tube Ends* (1) 3/8In Standpipe End* Tubes Connect Perpendicular To Each...
    09-05040098
    SKU:
    09-05040098
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Heavy Duty
    Material Options:
    Brass
    Make:
    Universal Items
    $13.71
    Qty in Cart: 0
    Price:
    $13.71
    Subtotal:
  • Hose End 1/2in X 5/8in JIC F Elbow Replaces 24710N670, 239201010

    Hose End 1/2in X 5/8in JIC F Elbow Replaces 24710N670, 239201010

    AFTERMARKET

    $60.99
    Hose End Use With #10 SAE 100R5 Hose* High Quality Hose End* Made In USA* Sold Individually* Warranty On Hose Ends Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...
    09-02500206
    SKU:
    09-02500206
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    $60.99
    Qty in Cart: 0
    Price:
    $60.99
    Subtotal:
  • PLC Standpipe Run Tee 1/4 X 1/4 X 1/4 Inch

    PLC Standpipe Run Tee 1/4 X 1/4 X 1/4 Inch

    AUTOMANN USA

    $11.13
    PLC Standpipe Run Tee 1/4 X 1/4 X 1/4 Inch* High Quality Standpipe Run Tee* Composite Body * With Brass Collet* (2) 1/4In Tube Ends* (1) 1/4In Standpipe End* Tubes Connect Perpendicular To Each...
    09-05040097
    SKU:
    09-05040097
    Material Options:
    Brass
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    $11.13
    Qty in Cart: 0
    Price:
    $11.13
    Subtotal:
  • Air Breather Vent Low Profile 1/2 Inch NPT

    Air Breather Vent Low Profile 1/2 Inch NPT

    AUTOMANN USA

    $6.93
    1/2 Inch NPT Air Breather Vent Low Profile* High Quality Air Breather Vent* 1/2In Npt* Shields Dirt And Debris From Entering Open Ports* Can Be Used For Vacuum Relief* Sintered Bronze 40-60 Micron...
    09-01080008
    SKU:
    09-01080008
    Truck Class:
    Heavy Duty
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $6.93
    Qty in Cart: 0
    Price:
    $6.93
    Subtotal:
  • Hose Connector Tee 1 Inch Replaces 65646, 28636

    Hose Connector Tee 1 Inch Replaces 65646, 28636

    AUTOMANN USA

    $18.72
    Connector For Fuel / Vacuum / Heater Hose* High Quality Conti Hose Connector Tee* Glass-Filled Glass Nylon* Temperature Range -50 Deg F To 275 Deg F* Sold As Pack* Warranty On Conti Hose Connector...
    09-02500156
    SKU:
    09-02500156
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Material Options:
    Nylon
    $18.72
    Qty in Cart: 0
    Price:
    $18.72
    Subtotal:
  • 7/8 Inch-14 Steel O-Ring Boss Plug Replaces 70725-0010, G60250-0010, G602500010

    7/8 Inch-14 Steel O-Ring Boss Plug Replaces 70725-0010, G60250-0010, G602500010

    AUTOMANN USA

    $3.43
    7/8-14 Inch Hydraulic Adapter - SAE to SAE* High Quality Plug O-Ring* Steel* Dimensions:  - A/F- 1.00 Inch  - Thread- 7/8 Inch-14  - Length- 0.937 Inch* Sold Individually* Warranty On Plug O-Rings...
    09-02500218
    SKU:
    09-02500218
    Material Options:
    Steel
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    $3.43
    Qty in Cart: 0
    Price:
    $3.43
    Subtotal:
  • Air Exhaust Muffler 1/2 Inch NPT

    Air Exhaust Muffler 1/2 Inch NPT

    AUTOMANN USA

    $11.55
    1/2 Inch NPT Air Exhaust MufflerThis air exhaust muffler fits 1/2-inch NPT pipes. It helps reduce noise and diffuses air from exhaust ports on air valves and cylinders. Made with durable sintered...
    09-01080004
    SKU:
    09-01080004
    Truck Class:
    Heavy Duty
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    Diameter Options:
    1/2 Inch
    $11.55
    Qty in Cart: 0
    Price:
    $11.55
    Subtotal:
  • Air Breather Vent Low Profile 1/8 Inch NPT

    Air Breather Vent Low Profile 1/8 Inch NPT

    AUTOMANN USA

    $3.46
    1/8In NPT Air Breather Vent Low Profile* High Quality Air Breather Vent* 1/8In Npt* Shields Dirt And Debris From Entering Open Ports* Can Be Used For Vacuum Relief* Sintered Bronze 40-60 Micron...
    09-01080005
    SKU:
    09-01080005
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    $3.46
    Qty in Cart: 0
    Price:
    $3.46
    Subtotal:
  • Air Breather Vent Low Profile 3/8 Inch NPT

    Air Breather Vent Low Profile 3/8 Inch NPT

    AUTOMANN USA

    $5.77
    3/8 Inch NPT Air Breather Vent Low Profile* High Quality Air Breather Vent* 3/8In Npt* Shields Dirt And Debris From Entering Open Ports* Can Be Used For Vacuum Relief* Sintered Bronze 40-60 Micron...
    09-01080007
    SKU:
    09-01080007
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    $5.77
    Qty in Cart: 0
    Price:
    $5.77
    Subtotal:
  • Hose Connector Tee 1/2 Inch ID

    Hose Connector Tee 1/2 Inch ID

    AUTOMANN USA

    $14.31
    1/2 Inch Hose Connector Tee* High Quality Conti-Hose Connector Tee* Glass-Filled Glass Nylon* 1/2 Inch* Temperature Range -50 Deg F To 275 Deg F* Sold Individually* Warranty On Conti-Hose Connector...
    09-02500072
    SKU:
    09-02500072
    Material Options:
    Nylon
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Diameter Options:
    1/2 Inch
    $14.31
    Qty in Cart: 0
    Price:
    $14.31
    Subtotal:
  • Air Exhaust Muffler 1/4 Inch NPT

    Air Exhaust Muffler 1/4 Inch NPT

    AUTOMANN USA

    $6.93
    1/4 Inch NPT Air Exhaust MufflerThis air exhaust muffler is designed to reduce noise and diffuse air from the exhaust ports of air valves and cylinders. It features a 40-micron sintered bronze center...
    09-01080001
    SKU:
    09-01080001
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Diameter Options:
    1/4 Inch
    $6.93
    Qty in Cart: 0
    Price:
    $6.93
    Subtotal:
  • Air Exhaust Muffler 1/8 Inch NPT

    Air Exhaust Muffler 1/8 Inch NPT

    AUTOMANN USA

    $4.62
    1/8 Inch NPT Air Exhaust MufflerThis air exhaust muffler is designed to diffuse air and reduce noise from the exhaust ports on air valves and air cylinders. It has a 1/8-inch NPT pipe connection and...
    09-01080003
    SKU:
    09-01080003
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    $4.62
    Qty in Cart: 0
    Price:
    $4.62
    Subtotal:
  • Air Breather Vent Low Profile 1/4 Inch NPT

    Air Breather Vent Low Profile 1/4 Inch NPT

    AUTOMANN USA

    $5.09
    1/4In NPT Air Breather Vent Low Profile* High Quality Air Breather Vent* 1/4In Npt* Shields Dirt And Debris From Entering Open Ports* Can Be Used For Vacuum Relief* Sintered Bronze 40-60 Micron...
    09-01080006
    SKU:
    09-01080006
    Truck Class:
    Heavy Duty
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $5.09
    Qty in Cart: 0
    Price:
    $5.09
    Subtotal:
  • Air Exhaust Muffler 3/8 Inch NPT

    Air Exhaust Muffler 3/8 Inch NPT

    AUTOMANN USA

    $9.25
    3/8 Inch Air Exhaust MufflerThis 3/8-inch NPT air exhaust muffler is designed to quiet noisy exhaust ports on air valves and air cylinders. It uses a 40-micron sintered bronze center to diffuse air...
    09-01080002
    SKU:
    09-01080002
    Truck Class:
    Heavy Duty
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    Diameter Options:
    3/8 Inch
    $9.25
    Qty in Cart: 0
    Price:
    $9.25
    Subtotal:
  • 8 Ga. Battery Cable Lug With 1/4 Inch Stud

    8 Ga. Battery Cable Lug With 1/4 Inch Stud

    SPECTRO WIRE

    $2.03
    8 AWG 1/4 Inch Stud Heavy Duty Copper LugThese heavy-duty, non-insulated copper cable lugs securely connect wires to studs. They are made from seamless, high-conductivity copper tubing, ensuring...
    09-16130105
    SKU:
    09-16130105
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Heavy Duty
    Material Options:
    Copper
    Size Options:
    8 Gauge
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $2.03
    Qty in Cart: 0
    Price:
    $2.03
    Subtotal:
  • Pressure Protection Valve 70 to 75 PSI Replaces E4324, 90554107, 90560150

    Pressure Protection Valve 70 to 75 PSI Replaces E4324, 90554107, 90560150

    AUTOMANN USA

    $19.21
    Pressure Protection Valves 70 to 75 PSI* High Quality Pressure Protection Valve* Opens At 75PSI* Closes At 70PSI* Sold Individually* Warranty On Pressure Protection Valves Against Defects In...
    29-05040000
    SKU:
    29-05040000
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Heavy Duty
    Rating:
    75 PSI
    Make:
    Universal Items
    $19.21
    Qty in Cart: 0
    Price:
    $19.21
    Subtotal:
  • 8 Gauge Copper Lug 3/8 Inch Stud

    8 Gauge Copper Lug 3/8 Inch Stud

    SPECTRO WIRE

    $0.58
    3/8 Inch Seamless Copper LugsThis copper ring terminal is designed for use with 8-gauge wire and 3/8 inch studs or screws. It features 25% more high-quality copper than similar products, ensuring...
    09-16130106
    SKU:
    09-16130106
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Heavy Duty
    Material Options:
    Copper
    Size Options:
    8 Gauge
    Diameter Options:
    3/8 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $0.58
    Qty in Cart: 0
    Price:
    $0.58
    Subtotal:
  • 16 Gauge Black Electrical Wire 25 Feet

    16 Gauge Black Electrical Wire 25 Feet

    PARTS DISTRIBUTING

    $14.56
    Black 16 Gauge GPT Primary WireThe Power Products Primary Wire is a reliable choice for automotive, truck, and marine applications. It meets SAE Code J1128 standards. With its PVC jacket, this wire...
    09-16031607
    SKU:
    09-16031607
    Truck Class:
    Heavy Duty
    Product Type:
    Air, Electrical, & Safety
    Size Options:
    16 Gauge
    Make:
    Universal Items
    Color:
    Black
    Length Options:
    25 Feet
    $14.56
    Qty in Cart: 0
    Price:
    $14.56
    Subtotal:
  • 2-1/8 Inch Purple Stick-On Reflector W/ Chrome Rim

    2-1/8 Inch Purple Stick-On Reflector W/ Chrome Rim

    AFTERMARKET

    $65,536.00
    2-1/8 Inch Purple Stick-On Reflector W/Chrome Rim* High Quality Reflector* Acrylic* 2-1/8 Inch * Purple * Stick-On * With Chrome Rim* Sold Individually* Warranty On Reflectors Against Defects In...
    09-162106003
    SKU:
    09-162106003
    Color:
    Purple
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Heavy Duty
    Finish Options:
    Chrome-Plated
    Make:
    Other - Pickup Truck
    $65,536.00
    Qty in Cart: 0
    Price:
    $65,536.00
    Subtotal:
  • 5/8 Inch Screw Type Blue Mini Reflectors - Set Of 24

    5/8 Inch Screw Type Blue Mini Reflectors - Set Of 24

    AFTERMARKET

    $65,536.00
    5/8 Inch Screw Type Blue Mini Reflectors - Set Of 24* High Quality Reflector* Acrylic* 5/8 Inch Diameter* Blue * Screw Type* Sold Individually* Warranty On Reflectors Against Defects In Workmanship &...
    09-162106005
    SKU:
    09-162106005
    Color:
    Blue
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Heavy Duty
    Diameter Options:
    5/8 Inch
    Make:
    Universal Items
    $65,536.00
    Qty in Cart: 0
    Price:
    $65,536.00
    Subtotal:
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Adding your products to cart

Semi Truck Gladhands & Air Connections

A semi truck gladhand is the critical connection point between your tractor air lines and the trailer’s air-brake system. These heavy-duty couplers lock together with a rubber seal to hold air pressure securely. Our inventory helps you restore and replace your existing gladhand configuration when it’s cracked, leaking, corroded, or damaged. Semi Truck Gladhand Replacements: Replace worn or damaged tractor-trailer air couplers to restore a tight, reliable air connection. Service Gladhands: Blue service gladhands carry control air used to apply the trailer brakes during normal braking. Emergency Gladhands: Red emergency gladhands supply constant air pressure to the trailer and keep the emergency spring brakes released while driving. Gladhand Seals and Replacement Parts: Replace cracked, flattened, hardened, or leaking seals when the gladhand body and locking tabs remain in good condition. Air Lines with Gladhands: Find 2-in-1, 3-in-1, ABS, and power air lines to replace chafed, cracked, stretched, or worn tractor-trailer connections.

Signs of a Leaking Gladhand

Replace or inspect the gladhand when you notice hissing, air-pressure loss, frequent compressor cycling, slow air recovery, visible seal damage, or air leaking at the tractor-trailer connection.

Gladhand Seals vs. Complete Couplers

Replace the rubber seal when the coupler body is solid but the gasket is worn, cracked, flattened, or leaking. Replace the complete gladhand when the body, locking tabs, threads, or sealing surface is damaged or badly corroded.

Individual Gladhands vs. Complete Air-Line Assemblies

Individual gladhands make sense when your hoses remain in good condition and only the coupler needs replacement. Complete air-line assemblies replace the hoses and connections together. Choose them when lines are cracked, weathered, stretched, damaged, or due for replacement.

Air Brake Valves & Controls

We stock tractor-trailer air-brake protection valves, quick-release valves, emergency relay valves, and MV3 dash valves. Replace worn PP5 and PPDC control valves, trailer brake valves, and related spring brake components to restore proper air-brake control.

Air System Maintenance & Repair Parts

Maintain and repair your air system with air dryers, air solenoid valves, air hoses, fittings, and air tank hardware. Emergency air-brake and in-cab air-line repair kits also help address damaged lines and fittings during roadside repairs.

Trailer ABS & Electrical Connections

Keep tractor-trailer air and electrical connections organized with ABS cables, 7-way electrical cords, wrapped hose assemblies, air-line boxes, and pogo sticks. Replace worn or damaged connection hardware to protect air lines, power cords, and ABS wiring from dragging, chafing, and road damage.

Frequently Asked Questions About Semi-Truck Safety, Air & Electrical

What air pressure switches and valves are compatible with my specific truck model?

Compatibility depends on your truck's make, model, and year. Most Freightliner Cascadia models (2008-2023) use standard 1/4" NPT air pressure switches rated at 90-120 PSI. Peterbilt 579/389 models typically require 1/8" NPT connections. Kenworth T680/W900 models often use proprietary valve configurations. Always check your truck's service manual for exact specifications, or contact our technical support team with your OEM for precise matching.

How difficult is it to install safety lighting and electrical components myself?

Installation difficulty varies by component. LED marker lights and basic warning lights typically require 30-60 minutes with basic tools and can be DIY-installed by following color-coded wiring (white=ground, black=power). Air horns and pressure gauges require air line connections and may need professional installation to avoid leaks. Complex items like backup cameras or multi-circuit lighting systems often require 2-4 hours and intermediate electrical knowledge. We provide detailed installation guides with each product, and most customers report successful DIY installation for basic components.

What's the actual lifespan of LED safety lights versus traditional bulbs in real-world conditions?

Based on customer feedback and warranty data, quality LED safety lights last 30,000-50,000 hours of operation, which translates to 5-8 years of typical commercial use. Traditional incandescent bulbs average 1,000-2,000 hours (6-12 months). LEDs handle vibration better and maintain brightness longer. However, cheaper LED units may fail within 1-2 years due to poor heat dissipation or inadequate weatherproofing. We recommend DOT-certified LEDs with aluminum housings and IP67 or higher waterproof ratings for maximum longevity.

Which air brake components fail most frequently and what are the warning signs?

The most common failures occur in air dryers (every 2-3 years), pressure protection valves (3-4 years), and gladhand seals (annually). Warning signs include: air dryer constantly purging or not purging at all, slow air pressure build-up taking over 3 minutes to reach 90 PSI, air leaks audible when brakes are released, and moisture in air tanks. Quick-release valves often stick in winter conditions. Regular maintenance with quality replacement parts can extend component life by 30-50%.

What gauge and type of wiring should I use for adding auxiliary lights and accessories?

Wire gauge depends on the accessory's amperage draw and cable run length. For LED marker lights (0.5-2 amps), use 18-16 AWG wire for runs under 15 feet. Work lights and fog lights (3-10 amps) require 14-12 AWG wire. High-powered LED light bars (15-30 amps) need 10 AWG wire with inline fuses. Always use automotive-grade stranded copper wire with SAE J1128 rating for flexibility and heat resistance. Install proper fuses or circuit breakers rated at 125% of the accessory's amp draw. Avoid household solid-core wire as it becomes brittle and cracks from vibration.


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