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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
  • Brass Split Ferrule Transmission Nut 1/8 Inch

    Brass Split Ferrule Transmission Nut 1/8 Inch

    PARTS DISTRIBUTING

    $2.03
    1/8 Inch Brass Compression Nut Fittings* High Quality Compression Nut* 1/8 Inch* Sold Individually* Warranty On Compression Nuts Against Defects In Workmanship & Material From Date Of Purchase***...
    SF612
    SKU:
    SF612
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Diameter Options:
    1/8 Inch
    Material Options:
    Brass
    Ready To Ship:
    Yes
    $2.03
    Qty in Cart: 0
    Price:
    $2.03
    Subtotal:
  • 1/8 Inch Brass Split Ferrule Transmission Union

    1/8 Inch Brass Split Ferrule Transmission Union

    PARTS DISTRIBUTING

    $3.53
    1/8 Inch Split Ferrule Trans Union* High Quality Transmission Union* 1/8 Inch* Split Ferrule* Sold Individually* Warranty On Transmission Unions Against Defects In Workmanship & Material From Date Of...
    SF622
    SKU:
    SF622
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Diameter Options:
    1/8 Inch
    Material Options:
    Brass
    Ready To Ship:
    Yes
    $3.53
    Qty in Cart: 0
    Price:
    $3.53
    Subtotal:
  • Male 90 Degree Elbow Split Ferrule Transmission Fitting 1/8 x 1/8 Inch

    Male 90 Degree Elbow Split Ferrule Transmission Fitting 1/8 x 1/8 Inch

    PARTS DISTRIBUTING

    $5.09
    Elbow Split Ferrule Transmission Fitting* High Quality Air Line * Sold Individually* Warranty On Air Line S Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...
    SF6922
    SKU:
    SF6922
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Material Options:
    Brass
    Ready To Ship:
    Yes
    $5.09
    Qty in Cart: 0
    Price:
    $5.09
    Subtotal:
  • 1/8 X 1/8 Inch Split Ferrule Trans Male Connector

    1/8 X 1/8 Inch Split Ferrule Trans Male Connector

    PARTS DISTRIBUTING

    $5.09
    Split Ferrule Transmission Male Connector 1/8 X 1/8 Inch* High Quality Connector* 1/8 Inch X 1/8 Inch* Sold Individually* Warranty On Connectors Against Defects In Workmanship & Material From Date Of...
    SF6822
    SKU:
    SF6822
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Material Options:
    Brass
    Ready To Ship:
    Yes
    $5.09
    Qty in Cart: 0
    Price:
    $5.09
    Subtotal:
  • Split Ferrule Trans Sleeve 5/32 Inch

    Split Ferrule Trans Sleeve 5/32 Inch

    PARTS DISTRIBUTING

    $6.11
    5/32 Inch Brass Split Ferrule Transmission Union* High Quality Split Sleeve* 5/32 Inch* Sold Individually* Warranty On Split Sleeves Against Defects In Workmanship & Material From Date Of Purchase***...
    SF6025
    SKU:
    SF6025
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Product Type:
    Engine Parts
    $6.11
    Qty in Cart: 0
    Price:
    $6.11
    Subtotal:
  • Brass Male Elbow 45 Degree 1/4 X 1/4 Inch For Nylon Tubing

    Brass Male Elbow 45 Degree 1/4 X 1/4 Inch For Nylon Tubing

    TRAMEC SLOAN

    $9.17
    Brass Elbow Male 45 Degree 1/4 X 1/4 Inch For Nylon Tubing* High Quality Elbow* Brass* 1/4 Inch X 1/4 Inch* 45 Degree* Sold Individually* Warranty On Elbows Against Defects In Workmanship & Material...
    NP7944
    SKU:
    NP7944
    Material Options:
    Brass
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Product Type:
    Air, Electrical, & Safety
    $9.17
    Qty in Cart: 0
    Price:
    $9.17
    Subtotal:
  • 3/8 X 1/4 Inch Brass Male Quick Air Line Connector

    3/8 X 1/4 Inch Brass Male Quick Air Line Connector

    PARTS DISTRIBUTING

    $11.21
    Brass Quick Connector Male 3/8 X 1/4 Inch* High Quality Connector* Brass* 3/8 Inch X 1/4 Inch* Male * Sold Individually* Warranty On Connectors Against Defects In Workmanship & Material From Date Of...
    NP6864
    SKU:
    NP6864
    Material Options:
    Brass
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $11.21
    Qty in Cart: 0
    Price:
    $11.21
    Subtotal:
  • Male Elbow 90 Degree Swivel 3/8 X 1/4 Inch

    Male Elbow 90 Degree Swivel 3/8 X 1/4 Inch

    PARTS DISTRIBUTING

    $9.02
    PTC Swivel Elbow Fitting 3/8 X 1/4 Inch* High Quality Elbow* Brass * 3/8 Inch x 1/4 Inch* Male* 90 Degree* Push On * Sold Individually* Warranty On Elbow Against Defects In Workmanship & Material...
    NP69SW-6-4
    SKU:
    NP69SW-6-4
    Product Type:
    Exhaust
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $9.02
    Qty in Cart: 0
    Price:
    $9.02
    Subtotal:
  • TPHD 1/2 Inch Nylon Push-On Union Tee

    TPHD 1/2 Inch Nylon Push-On Union Tee

    TPHD

    $20.52
    1/2 Inch Nylon Hose Air Brake DOT Push-In Brass Tee By TPHD* High Quality Push-On Union Tee* Nylon* 1/2 Inch* Sold Individually* Warranty On Push-On Union Tees Against Defects In Workmanship &...
    NP648
    SKU:
    NP648
    Material Options:
    Nylon
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Diameter Options:
    1/2 Inch
    Ready To Ship:
    Yes
    Product Type:
    Air, Electrical, & Safety
    $20.52
    Qty in Cart: 0
    Price:
    $20.52
    Subtotal:
  • 1/8 x 1/16 Inch Brass Male Push-to-Connect Coupler

    1/8 x 1/16 Inch Brass Male Push-to-Connect Coupler

    PARTS DISTRIBUTING

    $4.85
    Air Brack Tubing Male Connector Brass Fitting 1/8 Tube x 1/16 MPTThe 1/8 x 1/16 inch Male Connector Fitting provides a quick and reliable way to connect and disconnect air brake tubing. D.O.T...
    NP6821
    SKU:
    NP6821
    Truck Class:
    Heavy Duty
    Material Options:
    Brass
    Make:
    Universal Items
    $4.85
    Qty in Cart: 0
    Price:
    $4.85
    Subtotal:
  • 3/8 Inch Dot Push-To-Connect Fitting Straight NP62 Union

    3/8 Inch Dot Push-To-Connect Fitting Straight NP62 Union

    TRAMEC SLOAN

    $9.17
    3/8 Inch Air Hose DOT Air Fittings* High Quality Union Fitting * Brass* 3/8 Inch* Sold Individually* Warranty On Fittings Against Defects In Workmanship & Material From Date Of Purchase*** High...
    NP626
    SKU:
    NP626
    Truck Class:
    Heavy Duty
    Material Options:
    Brass
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Product Type:
    Air, Electrical, & Safety
    $9.17
    Qty in Cart: 0
    Price:
    $9.17
    Subtotal:
  • Brass Male Elbow 45 Degree 1/2 X 3/8 Inch For Nylon Tubing

    Brass Male Elbow 45 Degree 1/2 X 3/8 Inch For Nylon Tubing

    PARTS DISTRIBUTING

    $7.13
    Brass Elbow Male 45 Degree 1/2 X 3/8 Inch For Nylon Tubing* High Quality Elbow* Brass* 1/2 Inch X 3/8 Inch* 45 Degree* For Nylon Tubing* Sold Individually* Warranty On Elbows Against Defects In...
    N7986
    SKU:
    N7986
    Material Options:
    Brass
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $7.13
    Qty in Cart: 0
    Price:
    $7.13
    Subtotal:
  • Male Branch Tee 3/8 X 1/8 Inch

    Male Branch Tee 3/8 X 1/8 Inch

    PARTS DISTRIBUTING

    $14.23
    Male Branch Tee 3/8 X 1/8 Inch* High Quality Branch Tee* 3/8 X 1/8 Inch* Male * Sold Individually* Warranty On Branch Tees Against Defects In Workmanship & Material From Date Of Purchase*** High...
    N7264
    SKU:
    N7264
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $14.23
    Qty in Cart: 0
    Price:
    $14.23
    Subtotal:
  • Brass Branch Tee Male 1/4 X 1/8 Inch For Nylon Tubing

    Brass Branch Tee Male 1/4 X 1/8 Inch For Nylon Tubing

    PARTS DISTRIBUTING

    $8.15
    1/4 X 1/8 Inch Nylon Tubing Male Brass Branch Tee* High Quality Branch Tee* Brass* 1/4 Inch X 1/8 Inch* Male * For Nylon Tubing* Sold Individually* Warranty On Branch Tees Against Defects In...
    N7242
    SKU:
    N7242
    Material Options:
    Brass
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $8.15
    Qty in Cart: 0
    Price:
    $8.15
    Subtotal:
  • Male Brass Elbow 90 Degree Swivel 3/8 X 3/8 Inch

    Male Brass Elbow 90 Degree Swivel 3/8 X 3/8 Inch

    PARTS DISTRIBUTING

    $12.23
    Male Brass Elbow 90 Degree Swivel 3/8 X 3/8 Inch* High Quality Elbow* Brass* 3/8 Inch X 3/8 Inch* 90 Degree* Sold Individually* Warranty On Elbows Against Defects In Workmanship & Material From Date...
    NP69SW-6-6
    SKU:
    NP69SW-6-6
    Material Options:
    Brass
    Product Type:
    Exhaust
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $12.23
    Qty in Cart: 0
    Price:
    $12.23
    Subtotal:
  • Brass Male Elbow 90 Degree 3/8 X 3/8 Inch For Nylon Tubing

    Brass Male Elbow 90 Degree 3/8 X 3/8 Inch For Nylon Tubing

    TRAMEC SLOAN

    $13.11
    Brass Elbow Male 90 Degree 3/8 X 3/8 Inch For Nylon Tubing* High Quality Elbow* Brass* 3/8 Inch X 3/8 Inch* 90 Degree* For Nylon Tubing* Fits 3/8 Inch Plastic Airline X 3/8 Inch Mnpt* Sold...
    N6966
    SKU:
    N6966
    Truck Class:
    Heavy Duty
    Material Options:
    Brass
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Product Type:
    Air, Electrical, & Safety
    $13.11
    Qty in Cart: 0
    Price:
    $13.11
    Subtotal:
  • Brass Air Line Male Elbow 3/8 X 1/4 Inch For Nylon Tubing

    Brass Air Line Male Elbow 3/8 X 1/4 Inch For Nylon Tubing

    PARTS DISTRIBUTING

    $10.19
    Brass Elbow Male 90 Degree 3/8 X 1/4 Inch For Nylon Tubing* High Quality Fitting* Brass* 3/8 Inch X 1/4 Inch* 90 Degree* For Nylon Tubing* Fits 3/8 Inch Plastic Airline X 1/4 Inch Mnpt* Sold...
    N6964
    SKU:
    N6964
    Material Options:
    Brass
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $10.19
    Qty in Cart: 0
    Price:
    $10.19
    Subtotal:
  • Push In Male Elbow 45 Degree 1/4 X 1/8 Inch

    Push In Male Elbow 45 Degree 1/4 X 1/8 Inch

    TRAMEC SLOAN

    $9.17
    45 Degree 1/4 X 1/8 Inch Nylon Tubing Brass Elbow* High Quality Male Elbow* 1/4 Inch x 1/8 Inch* 45 Degree* Push In* Sold Individually* Warranty On Male Elbow Against Defects In Workmanship &...
    NP7942
    SKU:
    NP7942
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Product Type:
    Air, Electrical, & Safety
    $9.17
    Qty in Cart: 0
    Price:
    $9.17
    Subtotal:
  • 1/8 x 1/16 Inch Nylon Male Push-to-Connect Coupler

    1/8 x 1/16 Inch Nylon Male Push-to-Connect Coupler

    PARTS DISTRIBUTING

    $12.84
    1/8-Inch OD x 1/8-Inch Male NPT Air Line Connector Fitting* High Quality Connector* 1/8 Inch X 1/8 Inch* Push-On Male* Sold Individually* Warranty On Connectors Against Defects In Workmanship &...
    NP6822
    SKU:
    NP6822
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Material Options:
    Nylon
    Ready To Ship:
    Yes
    $12.84
    Qty in Cart: 0
    Price:
    $12.84
    Subtotal:
  • 3/8 X 1/8 Inch Brass Straight Male Connector Brass Fitting

    3/8 X 1/8 Inch Brass Straight Male Connector Brass Fitting

    PARTS DISTRIBUTING

    $7.13
    Brass Air Line Connector Male 3/8 X 1/8 Inch For Nylon Tubing* High Quality Fitting Straight* Brass* 3/8 Inch X 1/8 Inch* For Nylon Tubing* Fits 3/8 Inch Plastic Airline X 1/8 Inch Mnpt* Sold...
    N6862
    SKU:
    N6862
    Material Options:
    Brass
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $7.13
    Qty in Cart: 0
    Price:
    $7.13
    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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