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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.
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  • Qty in Cart
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  • Price
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  • Rear Of Front Insulator Pad Replaces 2073778, 3865199 For Chevrolet, GM

    Rear Of Front Insulator Pad Replaces 2073778, 3865199 For Chevrolet, GM

    BESTFIT TRUCK PARTS

    $25.44
    Chevrolet & GM Rear Of Front Insulator Pad* High Quality Insulator Pad* 3.0 Inch Springs* Rear Of Front* Sold Individually* Warranty On Insulator Pads Against Defects In Workmanship & Material From...
    12-05090006
    SKU:
    12-05090006
    Product Type:
    Frame & Chassis
    Make:
    Chevrolet
    Make:
    GMC
    Position:
    Front
    $25.44
    Qty in Cart: 0
    Price:
    $25.44
    Subtotal:
  • 4.125 Inch U Bolt Bottom Plate 15711787, 25761308 For Chevrolet / GM

    4.125 Inch U Bolt Bottom Plate 15711787, 25761308 For Chevrolet / GM

    BESTFIT TRUCK PARTS

    $31.48
    Chevrolet / GM Bottom U Bolt Plate* High Quality U-Bolt Plate* Rear Spring Bottom Plate* 3/4 Ton Application* Made Of Steel* Dimensions:  - 4.125 x 3.125 Inch Center To Center  - (4) 0.625 Inch...
    12-05100005
    SKU:
    12-05100005
    Product Type:
    Frame & Chassis
    Make:
    GMC
    Make:
    Chevrolet
    Material Options:
    Steel
    Make:
    Other - Pickup Truck
    $31.48
    Qty in Cart: 0
    Price:
    $31.48
    Subtotal:
  • Nylon Spring End Pad 15053476 , 15604067, 8156040670 For Chevrolet / GM

    Nylon Spring End Pad 15053476 , 15604067, 8156040670 For Chevrolet / GM

    BESTFIT TRUCK PARTS

    $1.14
    Replacement Spring End Cap* High Quality Spring End Pad * Nylon* 2.5 Inch * Sold Individually * Warranty On Spring End Pads Against Defects In Workmanship & Material From Date Of Purchase *** High...
    12-05090007
    SKU:
    12-05090007
    Product Type:
    Frame & Chassis
    Material Options:
    Nylon
    Make:
    GMC
    Make:
    Chevrolet
    Width Options:
    2 1/2 Inch
    $1.14
    Qty in Cart: 0
    Price:
    $1.14
    Subtotal:
  • 16-14 Gauge Blue Heat Shrink Butt Connector - 25 Piece

    16-14 Gauge Blue Heat Shrink Butt Connector - 25 Piece

    AUTOMANN USA

    $18.03
    Sta-Dray Butt Connectors Replaces 1-1962* High Quality Butt Connector* 16-14 Gauge* Blue* Heat Shrink Insulation* Crimp Provides Mechanical Reliability* Seal Prevents Wire Corrosion* RoHS Compliant*...
    09-16030354
    SKU:
    09-16030354
    Product Type:
    Air, Electrical, & Safety
    Color:
    Blue
    Size Options:
    14 Gauge
    Make:
    Universal Items
    $18.03
    Qty in Cart: 0
    Price:
    $18.03
    Subtotal:
  • 16 -14 Gauge Blue Crimp Solder Butt Connector - 25 Piece

    16 -14 Gauge Blue Crimp Solder Butt Connector - 25 Piece

    AUTOMANN USA

    $40.94
    16 -14 Gauge Sta-Dray Butt Connectors Replaces 1-1862Built for strength and conductivity, this 16-14 Gauge Blue Crimp Solder Butt Connector pack delivers professional-grade performance. The crimp...
    09-16030347
    SKU:
    09-16030347
    Product Type:
    Air, Electrical, & Safety
    Color:
    Blue
    Size Options:
    14 Gauge
    Make:
    Universal Items
    $40.94
    Qty in Cart: 0
    Price:
    $40.94
    Subtotal:
  • 12-10 Gauge Yellow Heat Shrink Butt Connector - 25 Piece

    12-10 Gauge Yellow Heat Shrink Butt Connector - 25 Piece

    AUTOMANN USA

    $21.59
    Sta-Dray Butt Connectors Replaces 1-1963* High Quality Butt Connector * 12-10 Gauge* Yellow* Heat Shrink Insulation* Crimp Barrel Provides Excellent Mechanical Reliability* RoHS Compliant* 25 Pieces*...
    09-16030355
    SKU:
    09-16030355
    Color:
    Yellow
    Product Type:
    Air, Electrical, & Safety
    Size Options:
    10 Gauge
    Make:
    Universal Items
    $21.59
    Qty in Cart: 0
    Price:
    $21.59
    Subtotal:
  • 22-16 Gauge Red Nylon Ring Terminals, Size 10 Stud

    22-16 Gauge Red Nylon Ring Terminals, Size 10 Stud

    AUTOMANN USA

    $9.25
    22-16 Gauge Wire Ring Terminals Replaces 422423* High Quality Ring* Nylon* Red * 22-16 Gauge* Stud Size 10* Sold As Pack* Warranty On Rings Against Defects In Workmanship & Material From Date Of...
    09-16030349
    SKU:
    09-16030349
    Product Type:
    Air, Electrical, & Safety
    Color:
    Red
    Material Options:
    Nylon
    Size Options:
    16 Gauge
    Make:
    Universal Items
    $9.25
    Qty in Cart: 0
    Price:
    $9.25
    Subtotal:
  • 22-16 Gauge Male Quick Connectors Red Replaces 832224, 422458

    22-16 Gauge Male Quick Connectors Red Replaces 832224, 422458

    AUTOMANN USA

    $4.62
    Male Quick Connect 22-16 GA Nylon 50 PieceThese 22-16 Gauge Male Quick Connectors are designed for easy wire connections. They accommodate wire sizes ranging from 22 to 16 AWG, making them suitable...
    09-16030343
    SKU:
    09-16030343
    Color:
    Red
    Product Type:
    Air, Electrical, & Safety
    Width Options:
    1/4 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Size Options:
    16 Gauge
    Material Options:
    Nylon
    $4.62
    Qty in Cart: 0
    Price:
    $4.62
    Subtotal:
  • 22-18 Gauge Blue Crimp Solder Butt Connector - 25 Piece

    22-18 Gauge Blue Crimp Solder Butt Connector - 25 Piece

    AUTOMANN USA

    $40.94
    Sta-Dray Butt Connectors Replaces 1-1862* High Quality Butt Connector* Red* 22-18 Gauge * Crimp Holds Wires In Place For Soldering Adds Reliability* Solder Provides Maximum Conductivity* Seal...
    09-16030348
    SKU:
    09-16030348
    Product Type:
    Air, Electrical, & Safety
    Size Options:
    18 Gauge
    Color:
    Red
    Make:
    Universal Items
    $40.94
    Qty in Cart: 0
    Price:
    $40.94
    Subtotal:
  • 12-10 Gauge Yellow Heat Shrink Ring Terminals Size 10 - 50 Piece

    12-10 Gauge Yellow Heat Shrink Ring Terminals Size 10 - 50 Piece

    AUTOMANN USA

    $20.82
    Ring No 10 12-10GA Heat Shrink* High Quality Ring* Yellow* 12-10 Gauge* Stud Size 10 * Heat Shrink Insulation* Sold As Pack* Warranty On Rings Against Defects In Workmanship & Material From Date Of...
    09-16030345
    SKU:
    09-16030345
    Product Type:
    Air, Electrical, & Safety
    Color:
    Yellow
    Size Options:
    10 Gauge
    Make:
    Universal Items
    $20.82
    Qty in Cart: 0
    Price:
    $20.82
    Subtotal:
  • 22-18 Gauge Red Heat Shrink Butt Connector - 25 Piece

    22-18 Gauge Red Heat Shrink Butt Connector - 25 Piece

    AUTOMANN USA

    $18.03
    Sta-Dray Butt Connectors Replaces 1-1961* High Quality Butt Connector* 22-18 Gauge* Red* Heat Shrink* Crimp Provides Mechanical Reliability * Seal Prevents Wire Corrosion* 25 Piece* Sold As Pack*...
    09-16030353
    SKU:
    09-16030353
    Color:
    Red
    Product Type:
    Air, Electrical, & Safety
    Size Options:
    18 Gauge
    $18.03
    Qty in Cart: 0
    Price:
    $18.03
    Subtotal:
  • 12-10 Gauge Yellow Crimp Solder Butt Connector - 100 Piece

    12-10 Gauge Yellow Crimp Solder Butt Connector - 100 Piece

    AFTERMARKET

    $149.99
    Yellow Butt Connectors Replaces 1-1861-100. 11861100. 83-2931. 832931These 12-10 gauge yellow butt connectors feature an internal fluxed solder ring and heat shrink insulation, making them great for...
    09-16030344
    SKU:
    09-16030344
    Color:
    Yellow
    Truck Class:
    Universal
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    Size Options:
    10 Gauge
    $149.99
    Qty in Cart: 0
    Price:
    $149.99
    Subtotal:
  • 12 - 10 Gauge Yellow Crimp Solder Butt Connector - 25 Piece

    12 - 10 Gauge Yellow Crimp Solder Butt Connector - 25 Piece

    AUTOMANN USA

    $50.99
    Sta-Dray Butt Connectors* High Quality Butt Connector* Yellow* 12-10 Gauge * Crimp Holds Wires In Place For Soldering Adds Reliability* Solder Provides Maximum Conductivity* Seal Prevents Wire...
    09-16030346
    SKU:
    09-16030346
    Product Type:
    Air, Electrical, & Safety
    Size Options:
    10 Gauge
    Make:
    Universal Items
    $50.99
    Qty in Cart: 0
    Price:
    $50.99
    Subtotal:
  • Pressure Protection Valve 65 To 55 PSI Replaces 223565, 918325, 032220

    Pressure Protection Valve 65 To 55 PSI Replaces 223565, 918325, 032220

    AUTOMANN USA

    $35.84
    Replacement Pressure Protection Valves* High Quality Pressure Protection Valve* Dimensions:  - 1/2 Inch NPT Inlet  - 1/4 Inch NPT Outlet* Opens At 65 PSI* Closes At 55 PSI* Sold Individually*...
    09-05170065
    SKU:
    09-05170065
    Product Type:
    Air, Electrical, & Safety
    Rating:
    65 PSI
    Make:
    Universal Items
    $35.84
    Qty in Cart: 0
    Price:
    $35.84
    Subtotal:
  • Gladhand Grips Aluminum 1/2in Replaces BE12600, 12600, 1011TG, 16216

    Gladhand Grips Aluminum 1/2in Replaces BE12600, 12600, 1011TG, 16216

    AUTOMANN USA

    $21.61
    One Red and One Blue Solid Aluminum Gladhand HandlesLooking for reliable gladhand grips? Our aluminum emergency & Service gladhand grips come with a 1/2-inch pipe end and feature one red grip and one...
    09-05170062
    SKU:
    09-05170062
    Material Options:
    Aluminum
    Truck Class:
    Universal
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $21.61
    Qty in Cart: 0
    Price:
    $21.61
    Subtotal:
  • Emergency Relay Valve Replaces ESLA1000S, 401226

    Emergency Relay Valve Replaces ESLA1000S, 401226

    AFTERMARKET

    $130.99
    Air Brake Emergency Relay ValveThe emergency relay valve is designed for reliability and safety. It has a crack pressure of 1.5 PSI, making it responsive to changes in pressure. You can easily...
    09-05170059
    SKU:
    09-05170059
    Product Type:
    Air, Electrical, & Safety
    Truck Class:
    Universal
    Make:
    Universal Items
    $130.99
    Qty in Cart: 0
    Price:
    $130.99
    Subtotal:
  • Pressure Protection Valve 100 To 70 PSI Replaces 032222, 918330, 25165589, 20QE2326A

    Pressure Protection Valve 100 To 70 PSI Replaces 032222, 918330, 25165589, 20QE2326A

    AUTOMANN USA

    $32.95
    Replacement Pressure Protection Valves* High Quality Pressure Protection Valve* 1/4 Inch NPT* Opens At 100 PSI* Closes At 70 PSI* Sold Individually* Warranty On Pressure Protection Valves Against...
    09-05040011
    SKU:
    09-05040011
    Product Type:
    Air, Electrical, & Safety
    Make:
    Universal Items
    $32.95
    Qty in Cart: 0
    Price:
    $32.95
    Subtotal:
  • Air Brake Quick Release Valve Kit

    Air Brake Quick Release Valve Kit

    OPP - ORIGINAL PARTS PROGRAM

    $718.99
    Air Brake Quick Release Valve Replacement Kit* High Quality Valve Replacement Kit* 12 Volts* Quick Release* Sold Individually* Warranty On Valve Replacement Kits Against Defects In Workmanship &...
    TDA R955413
    SKU:
    TDA R955413
    Truck Class:
    Heavy Duty
    Make:
    Western Star
    Product Type:
    Air, Electrical, & Safety
    $718.99
    Qty in Cart: 0
    Price:
    $718.99
    Subtotal:
  • ABS System Wiring Harness Jumper, Forward For Western Star 4900SF

    ABS System Wiring Harness Jumper, Forward For Western Star 4900SF

    OPP - ORIGINAL PARTS PROGRAM

    $112.99
    Western Star Jumper Chassis Exterior ABS Harness Assembly* High Quality Harness Jumper * Durable Outer Sleeve That Protects Wires * Sold Individually* Warranty On Harness Jumpers Against Defects In...
    A06-74517-000
    SKU:
    A06-74517-000
    Truck Class:
    Heavy Duty
    Product Type:
    Air, Electrical, & Safety
    Make:
    Western Star
    $112.99
    Qty in Cart: 0
    Price:
    $112.99
    Subtotal:
  • TPHD 18 Inch Straight ABS Sensor AL1027196, 364528001

    TPHD 18 Inch Straight ABS Sensor AL1027196, 364528001

    TURNPIKE TRUCK TRIM

    $48.70
    ABS Sensor Straight Head, 18 Inch* High Quality ABS Sensor Kit* 18 Inch Cable Length* Straight Head* 2 Pin* Includes Sensor Clip And Grease* Sold Individually* Warranty On Sensor Kits Against Defects...
    29-05170060
    SKU:
    29-05170060
    Length Options:
    18 Inch
    Truck Class:
    Heavy Duty
    Product Type:
    Air, Electrical, & Safety
    Make:
    Freightliner
    Make:
    Mack
    Make:
    Volvo
    Make:
    International
    Make:
    Sterling
    $48.70
    Qty in Cart: 0
    Price:
    $48.70
    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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