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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
  • 1/2 X 1/4 Inch Brass Straight Male Connector Brass Fitting

    1/2 X 1/4 Inch Brass Straight Male Connector Brass Fitting

    TRAMEC SLOAN

    $9.17
    Brass Connector Male 1/2 X 1/4 Inch For Nylon Tubing* High Quality Fitting Straight* Brass* 1/2 Inch X 1/4 Inch * For Nylon Tubing* Fits 1/2 Inch Plastic Airline X 1/4 Inch Mnpt* Sold Individually*...
    N6884
    SKU:
    N6884
    Truck Class:
    Heavy Duty
    Material Options:
    Brass
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    $9.17
    Qty in Cart: 0
    Price:
    $9.17
    Subtotal:
  • On Sale
    Limited Quantity Available
    1/4 X 1/4 Inch Nylon Push On Male Connector

    1/4 X 1/4 Inch Nylon Push On Male Connector

    TRAMEC SLOAN

    Now: $2.71
    Was: $6.99
    Nylon Push On Male Connector 1/4 X 1/4* High Quality Male Connector* Nylon* 1/4 Inch x 1/4 Inch* Push On Style* Sold Individually* Warranty On Male Connector Against Defects In Workmanship & Material...
    NP6844
    SKU:
    NP6844
    Material Options:
    Nylon
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    Now: $2.71
    Was: $6.99
    Qty in Cart: 0
    Price:
    Now: $2.71
    Was: $6.99
    Subtotal:
  • TPHD 1/4 Inch Air Brake Push-On Union Tee NP64

    TPHD 1/4 Inch Air Brake Push-On Union Tee NP64

    TPHD

    $12.46
    Push to Connect Fitting 1/4 Inch Tube OD Tee Union DOT Air Fittings Air Brake Line Fitting* High Quality Union Tee* Brass* 1/4 Inch* Sold Individually* Warranty On Union Tees Against Defects In...
    NP644
    SKU:
    NP644
    Material Options:
    Brass
    Truck Class:
    Heavy Duty
    Diameter Options:
    1/4 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Product Type:
    Air, Electrical, & Safety
    $12.46
    Qty in Cart: 0
    Price:
    $12.46
    Subtotal:
  • 3/4 X 3/4 Inch Brass Male Connector For Nylon Tubing

    3/4 X 3/4 Inch Brass Male Connector For Nylon Tubing

    PARTS DISTRIBUTING

    $21.86
    Brass Connector Male 3/4 X 3/4 Inch For Nylon Tubing* High Quality Fitting Straight* Brass* 3/4 Inch X 3/4 Inch* Male* For Nylon Tubing* Sold Individually* Warranty On Fitting Straights Against...
    N681212
    SKU:
    N681212
    Truck Class:
    Heavy Duty
    Material Options:
    Brass
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $21.86
    Qty in Cart: 0
    Price:
    $21.86
    Subtotal:
  • 5/8 X 1/2 Inch Brass Straight Male Connector Brass Fitting

    5/8 X 1/2 Inch Brass Straight Male Connector Brass Fitting

    TRAMEC SLOAN

    $7.63
    Brass Air Line Connector Male 5/8 X 1/2 Inch For Nylon Tubing* High Quality Fitting Straight* Brass* 5/8 Inch X 1/2 Inch* For Nylon Tubing* Fits 5/8 Inch Plastic Airline X 1/2 Inch Mnpt* Sold...
    N68108
    SKU:
    N68108
    Material Options:
    Brass
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Product Type:
    Air, Electrical, & Safety
    $7.63
    Qty in Cart: 0
    Price:
    $7.63
    Subtotal:
  • Air Brake Tube Fitting - 45 Degree Male Elbow 1/4 x 1/4 Inch

    Air Brake Tube Fitting - 45 Degree Male Elbow 1/4 x 1/4 Inch

    PARTS DISTRIBUTING

    $6.11
    Male 45 Degree Brass Elbow Air Brake Tube FittingThis Brass Elbow Air Brake Tube Fitting offers a strong and reliable connection. Made from corrosion-resistant brass, it withstands high temperatures...
    N7944
    SKU:
    N7944
    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:
  • TPHD 3/8 Inch Brass Push Type Union Tee

    TPHD 3/8 Inch Brass Push Type Union Tee

    TPHD

    $21.47
    3/8 Inch Air Line Union Tee Push Type By TPHD* High Quality Union Tee* Brass* 3/8 Inch* Push Type * Sold Individually* Warranty On Union Tees Against Defects In Workmanship & Material From Date Of...
    NP646
    SKU:
    NP646
    Truck Class:
    Heavy Duty
    Material Options:
    Brass
    Diameter Options:
    3/8 Inch
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Ready To Ship:
    Yes
    $21.47
    Qty in Cart: 0
    Price:
    $21.47
    Subtotal:
  • On Sale
    Limited Quantity Available
    5/8 Inch Inserts For Plastic Air Line

    5/8 Inch Inserts For Plastic Air Line

    PARTS DISTRIBUTING

    Now: $0.17
    Was: $1.52
    5/8 Inch Inserts For Plastic Air Line* High Quality Air Line Insert* Made Of Nylon* 5/8 Inch* For Plastic Air Line* Sold As Package (25 Pkg)* Warranty On Air Line Insert Against Defects In...
    N6310
    SKU:
    N6310
    Material Options:
    Nylon
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Diameter Options:
    5/8 Inch
    Ready To Ship:
    Yes
    Now: $0.17
    Was: $1.52
    Qty in Cart: 0
    Price:
    Now: $0.17
    Was: $1.52
    Subtotal:
  • 3/4 Inch Nylon Air Brake Tubing Insert For Plastic Air Line

    3/4 Inch Nylon Air Brake Tubing Insert For Plastic Air Line

    PARTS DISTRIBUTING

    $6.11
    3/4 Inch Nylon Air Brake Tubing Insert For Plastic Air Line* High Quality Air Brake Tubing Insert* Nylon* 3/4 Inch* For Plastic Air Line * Sold Individually* Warranty On Air Brake Tubing Inserts...
    N6312
    SKU:
    N6312
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Diameter Options:
    3/4 Inch
    Material Options:
    Nylon
    Ready To Ship:
    Yes
    $6.11
    Qty in Cart: 0
    Price:
    $6.11
    Subtotal:
  • Brass Male Elbow 90 Degree 1/2 X 3/8 Inch For Nylon Tubing

    Brass Male Elbow 90 Degree 1/2 X 3/8 Inch For Nylon Tubing

    TRAMEC SLOAN

    $9.09
    Brass Elbow Male 90 Degree 1/2 X 3/8 Inch For Nylon Tubing* High Quality Elbow* Brass* 1/2 Inch X 3/8 Inch * 90 Degree* For Nylon Tubing* Fits 1/2Inch Plastic Airline X 3/8 Inch Mnpt* Sold...
    N6986
    SKU:
    N6986
    Material Options:
    Brass
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Product Type:
    Air, Electrical, & Safety
    $9.09
    Qty in Cart: 0
    Price:
    $9.09
    Subtotal:
  • Air Line Fitting 3/8 X 1/4 45 Inch

    Air Line Fitting 3/8 X 1/4 45 Inch

    PARTS DISTRIBUTING

    $5.44
    Fitting Air Line 3/8 X 1/4 45 Inch* High Quality Air Line Fitting* 3/8 X 1/4 45 Inch* Sold Individually* Warranty On Air Lines Against Defects In Workmanship & Material From Date Of Purchase*** High...
    N7964
    SKU:
    N7964
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $5.44
    Qty in Cart: 0
    Price:
    $5.44
    Subtotal:
  • 3/8 Inch Brass Compression Nut For Nylon Tubing

    3/8 Inch Brass Compression Nut For Nylon Tubing

    PARTS DISTRIBUTING

    $4.07
    3/8 Inch Nylon Tubing Brass NutThis 3/8 inch nylon tubing brass nut provides leak-free connections. Made for durability, these fittings resist wear, chemicals, and vibration. They work well in many...
    N616
    SKU:
    N616
    Material Options:
    Brass
    Truck Class:
    Heavy Duty
    Diameter Options:
    3/8 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $4.07
    Qty in Cart: 0
    Price:
    $4.07
    Subtotal:
  • 1/2 Inch Brass Compression Nuts - 5 Pack

    1/2 Inch Brass Compression Nuts - 5 Pack

    PARTS DISTRIBUTING

    $10.19
    1/2 Inch Brass Compression NutsThese 1/2 inch brass compression nuts work with copper, brass, or plastic tubing. They resist corrosion and are built to last. These fittings handle pressures from 125...
    N618
    SKU:
    N618
    Material Options:
    Brass
    Truck Class:
    Heavy Duty
    Diameter Options:
    1/2 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $10.19
    Qty in Cart: 0
    Price:
    $10.19
    Subtotal:
  • Air Line Fitting - Female Elbow 90 Degree 3/8 X 3/8 Inch

    Air Line Fitting - Female Elbow 90 Degree 3/8 X 3/8 Inch

    PARTS DISTRIBUTING

    $21.41
    Female 90 Elbow 3/8 X 3/8This air brake tube fitting meets SAE and DOT FMVSS 571.106 specifications. It requires no special tubing preparation and offers excellent vibration resistance. Made from...
    N7066
    SKU:
    N7066
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $21.41
    Qty in Cart: 0
    Price:
    $21.41
    Subtotal:
  • Brass Air Line Male Elbow 90 Degree 1/4 X 1/8 Inch For Nylon Tubing

    Brass Air Line Male Elbow 90 Degree 1/4 X 1/8 Inch For Nylon Tubing

    TRAMEC SLOAN

    $8.15
    90 Degree Brass Elbow Male 1/4 X 1/8 Inch For Nylon TubingThe Male 90 degree 1/4 inch Brass Elbow is ideal for connecting 1/8 inch nylon tubes in tight spaces. Its durable brass construction ensures...
    N6942
    SKU:
    N6942
    Material Options:
    Brass
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    $8.15
    Qty in Cart: 0
    Price:
    $8.15
    Subtotal:
  • Brass Air Line Sleeve 3/4 Inch For Nylon Tubing

    Brass Air Line Sleeve 3/4 Inch For Nylon Tubing

    TRAMEC SLOAN

    $4.02
    3/4 Inch Air Line Sleeve For Nylon Tubing* High Quality Air Line Sleeve* Made Of Brass* 3/4 Inch* For Nylon Tubing* Sold As Package (10 Per Pkg)* Warranty On Air Line Sleeve Against Defects In...
    N6012
    SKU:
    N6012
    Material Options:
    Brass
    Truck Class:
    Heavy Duty
    Diameter Options:
    3/4 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Product Type:
    Air, Electrical, & Safety
    $4.02
    Qty in Cart: 0
    Price:
    $4.02
    Subtotal:
  • Brass Air Line Sleeve 3/8 Inch For Nylon Tubing

    Brass Air Line Sleeve 3/8 Inch For Nylon Tubing

    TRAMEC SLOAN

    $1.01
    3/8 Inch Brass Air Line Sleeve For Nylon Tubing* High Quality Air Line Sleeve* Made Of Brass* 3/8 Inch* For Nylon Tubing* Sold Individually* Warranty On Air Line Sleeve Against Defects In Workmanship...
    N606
    SKU:
    N606
    Material Options:
    Brass
    Truck Class:
    Heavy Duty
    Diameter Options:
    3/8 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Product Type:
    Air, Electrical, & Safety
    $1.01
    Qty in Cart: 0
    Price:
    $1.01
    Subtotal:
  • Brass Air Line Male Elbow 1/4 X 3/8 Inch For Nylon Tubing

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

    PARTS DISTRIBUTING

    $6.11
    Brass Elbow Male 90 Degree 1/4 X 3/8 Inch For Nylon Tubing* High Quality Fitting* Brass* 1/4 Inch X 3/8 Inch* 90 Degree* For Nylon Tubing* Fits 1/4 Inch Plastic Airline X 3/8 Inch Mnpt* Sold...
    N6946
    SKU:
    N6946
    Truck Class:
    Heavy Duty
    Material Options:
    Brass
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $6.11
    Qty in Cart: 0
    Price:
    $6.11
    Subtotal:
  • 1/4 X 1/8 Inch Brass Straight Male Connector Brass Fitting

    1/4 X 1/8 Inch Brass Straight Male Connector Brass Fitting

    TRAMEC SLOAN

    $5.09
    Brass Air Line Connector Male 1/4 X 1/8 Inch For Nylon Tubing* High Quality Fitting Straight* Brass* 1/4 Inch X 1/8 Inch* For Nylon Tubing* Fits 1/4 Inch Plastic Airline X 1/8 Inch Mnpt* Sold...
    N6842
    SKU:
    N6842
    Material Options:
    Brass
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Product Type:
    Air, Electrical, & Safety
    $5.09
    Qty in Cart: 0
    Price:
    $5.09
    Subtotal:
  • On Sale
    Limited Quantity Available
    RCA Plastic Grip Right-Angle Plug Adapter- Gold Tip

    RCA Plastic Grip Right-Angle Plug Adapter- Gold Tip

    AFTERMARKET

    Now: $1.05
    Was: $9.48
    90 Degree RCA Adapter Plug ConnectorThis 90-degree RCA adapter is a great solution for connecting subwoofer cables, RCA audio cables, or component video cables to your A/V receiver, subwoofer, DVD...
    LC101
    SKU:
    LC101
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Material Options:
    Plastic/Poly
    Ready To Ship:
    Yes
    Now: $1.05
    Was: $9.48
    Qty in Cart: 0
    Price:
    Now: $1.05
    Was: $9.48
    Subtotal:
  • Total: items /

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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