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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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  • Polar Air Coiled Trailer Air Line Set - Red & Blue

    Polar Air Coiled Trailer Air Line Set - Red & Blue

    AFTERMARKET

    $163.99 - $191.99
    Rely on the Polar Air Coiled Trailer Air Line Set to keep your trailer brakes functioning perfectly. Available in red and blue with options of 15 FT Service & Emergency with 40-inch leads, 20 FT with...
    PPR_298958
    SKU:
    PPR_298958
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $163.99 - $191.99
    Qty in Cart: 0
    Price:
    $163.99 - $191.99
    Subtotal:
  • Air Brake Hose Coil 225 PSI

    Air Brake Hose Coil 225 PSI

    AFTERMARKET

    $82.99 - $425.99
    Ensure long-lasting, high-pressure air brake performance with the Air Brake Hose Coil 225 PSI. Choose from 3/8 Inch x 50 Foot, 1/2 Inch x 50 Foot, 3/8 Inch x 250 Foot, or 1/2 Inch x 250 Foot...
    PPR_298954
    SKU:
    PPR_298954
    Material Options:
    Rubber
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $82.99 - $425.99
    Qty in Cart: 0
    Price:
    $82.99 - $425.99
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  • 3/8 Inch Rubber Air Line Gladhands Set With Flexible Grips

    3/8 Inch Rubber Air Line Gladhands Set With Flexible Grips

    AFTERMARKET

    $70.99 - $88.99
    Keep your truck's air brake system operating safely and efficiently with the 3/8 Inch Rubber Air Line Gladhands Set with Flexible Grips. Available in red emergency and blue service lines, these...
    PPR_298946
    SKU:
    PPR_298946
    Material Options:
    Rubber
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $70.99 - $88.99
    Qty in Cart: 0
    Price:
    $70.99 - $88.99
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  • 500 -100 Amp Bolt On Fuses

    500 -100 Amp Bolt On Fuses

    AUTOMANN USA

    $7.35 - $8.91
    Bolt down fuses provide excellent protection for battery and alternator circuits. You can secure them to the fuse holder with a screw, nut, or bolt, making installation a breeze. Simply crimp ring...
    PPR_298945
    SKU:
    PPR_298945
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    $7.35 - $8.91
    Qty in Cart: 0
    Price:
    $7.35 - $8.91
    Subtotal:
  • 2 In 1 Red / Blue Spiral Wrapped 3/8 Inch Rubber Air Hoses 1/2 Inch NPT Ends

    2 In 1 Red / Blue Spiral Wrapped 3/8 Inch Rubber Air Hoses 1/2 Inch NPT Ends

    AFTERMARKET

    $181.99 - $238.99
    Ensure reliable air flow and safe operation with the BESTfit 2 In 1 Red / Blue Spiral Wrapped 3/8 Inch Rubber Air Hoses, available in multiple lengths including 12 ft, 13.5 ft, 15 ft, and 20 ft...
    PPR_298973
    SKU:
    PPR_298973
    Truck Class:
    Heavy Duty
    Material Options:
    Rubber
    Diameter Options:
    3/8 Inch
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $181.99 - $238.99
    Qty in Cart: 0
    Price:
    $181.99 - $238.99
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  • 3/8 Inch Poly Split Wire Loom Tubing

    3/8 Inch Poly Split Wire Loom Tubing

    AUTOMANN USA

    $7.08 - $17.39
    Choose Option(s) to see description.3/8 Inch Poly Split Wire Loom Tubing - 50 FtPoly Split Loom 3/8 Inch ID - 50 Foot LengthEasily protect your wire and wire harnesses from heat, sunlight, water,...
    PPR_298962
    SKU:
    PPR_298962
    Material Options:
    Plastic/Poly
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $7.08 - $17.39
    Qty in Cart: 0
    Price:
    $7.08 - $17.39
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  • Trailer Air Brake Rubber Hose

    Trailer Air Brake Rubber Hose

    AFTERMARKET

    $62.99 - $80.99
    Choose Option(s) to see description.20 FT Blue Service Rubber Air Line With HD Plastic Gladhand GripsBlue Rubber Air Hose With Gladhand Grip* High Quality Air Line* Rubber* Blue * 20 Ft Length* 3/8...
    PPR_298953
    SKU:
    PPR_298953
    Diameter Options:
    3/8 Inch
    Material Options:
    Rubber
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $62.99 - $80.99
    Qty in Cart: 0
    Price:
    $62.99 - $80.99
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  • Airpower 3 In 1 Line With HD Plastic Gladhand Grip

    Airpower 3 In 1 Line With HD Plastic Gladhand Grip

    AFTERMARKET

    $195.99 - $252.99
    The Airpower 3 In 1 Line with HD plastic gladhand grips ensures efficient air and electrical transfer for heavy-duty trucks. Offered in 12, 15, and 20-foot lengths, select models include 7-way plugs...
    PPR_298947
    SKU:
    PPR_298947
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Material Options:
    Plastic/Poly
    $195.99 - $252.99
    Qty in Cart: 0
    Price:
    $195.99 - $252.99
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  • Red 4 Gauge Wire Starter Cable 25 Feet

    Red 4 Gauge Wire Starter Cable 25 Feet

    AFTERMARKET

    $101.99
    4 Gauge Red Wire Starter Cable* High Quality Wire Starter Cable* 25 Ft Length* Red Wire* 4 Gauge* Tough* High Temperature Resistant PVC Insulation* Rated -58 To 221 Degree F/-50 To 105 Degree C*...
    09-16030818
    SKU:
    09-16030818
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    $101.99
    Qty in Cart: 0
    Price:
    $101.99
    Subtotal:
  • 12 Ft Single Blue Service Air Coil W/ 1/2 Inch NPT Ends

    12 Ft Single Blue Service Air Coil W/ 1/2 Inch NPT Ends

    AUTOMANN USA

    $28.94
    Air Brake Hose Assembly - 1/2 in. NPTF* High Quality Single Air Coil* Nylon* Dimensions:  - 144 Inch Length  - 12 Inch Leads  - 1/2 Inch Outer Diameter* 1/2 Inch Male Pipe Fitting* Color Blue* SAE...
    09-05040002
    SKU:
    09-05040002
    Truck Class:
    Heavy Duty
    Material Options:
    Nylon
    Diameter Options:
    1/2 Inch
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $28.94
    Qty in Cart: 0
    Price:
    $28.94
    Subtotal:
  • 20 Ft Single Blue Service Air Coil W/ 1/2 Inch NPT Ends

    20 Ft Single Blue Service Air Coil W/ 1/2 Inch NPT Ends

    AFTERMARKET

    $46.11
    Air Brake Hose Assembly - 1/2 in. NPTF* High Quality Single Air Coil* Nylon* Dimensions:  - 20 Foot Length  - 12 Inch Leads  - 1/2 Inch Outer Diameter* Color Blue* 1/2 Inch Male Pipe Fitting* SAE...
    09-05040003
    SKU:
    09-05040003
    Truck Class:
    Heavy Duty
    Material Options:
    Nylon
    Diameter Options:
    1/2 Inch
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $46.11
    Qty in Cart: 0
    Price:
    $46.11
    Subtotal:
  • 12 Foot Red/Blue Coiled Air Hose Set With 12 Inch Leads

    12 Foot Red/Blue Coiled Air Hose Set With 12 Inch Leads

    AFTERMARKET

    $96.99
    20 Ft. Red & Blue Extreme Cold Air Coil W/ 1/2 Inch Male Pipe Fitting* High Quality Air Coils* Nylon* Dimensions:  - 20 Ft Length  - Leads 12 Inch And 40 Inch  - 1/2 Inch Outer Diameter* 1/2 Inch...
    09-05040042
    SKU:
    09-05040042
    Diameter Options:
    1/2 Inch
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $96.99
    Qty in Cart: 0
    Price:
    $96.99
    Subtotal:
  • 15 Ft Single Blue Service Air Coil W/ 1/2 Inch NPT Ends

    15 Ft Single Blue Service Air Coil W/ 1/2 Inch NPT Ends

    AUTOMANN USA

    $32.83
    Air Brake Hose Assembly - 1/2 in. NPTF* High Quality Single Air Coil* Nylon* Dimensions:  - 180 Inch Length  - 12 Inch Leads  - 1/2 Inch Outer Diameter* Color Blue* 1/2 Inch Male Pipe Fitting* SAE...
    09-05040001
    SKU:
    09-05040001
    Diameter Options:
    1/2 Inch
    Material Options:
    Nylon
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $32.83
    Qty in Cart: 0
    Price:
    $32.83
    Subtotal:
  • BESTfit 7 Way Receptacle Trailer Wire Harness 14 Inch W/ Ground Ring Terminal

    BESTfit 7 Way Receptacle Trailer Wire Harness 14 Inch W/ Ground Ring Terminal

    BESTFIT TRUCK PARTS

    $178.99
    14 Inch 6 Pin Connector Trailer Wire Harness By BESTfitThe 14 Inch 7-Way Receptacle Trailer Wire Harness delivers the reliability and durability needed for long hauls and heavy loads. Engineered for...
    01-051100005
    SKU:
    01-051100005
    Length Options:
    14 Inch
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Product Type:
    Air, Electrical, & Safety
    $178.99
    Qty in Cart: 0
    Price:
    $178.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Isspro High Temperature Pyrometer Lead Wire

    Isspro High Temperature Pyrometer Lead Wire

    ISSPRO

    $22.81 - $41.09
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Trucks and TrailersIsspro High Temperature Pyrometer Lead Wire - 10 FeetIsspro10 Foot High Temperature Lead Wire For Pyrometer...
    PPR_298925
    SKU:
    PPR_298925
    Truck Class:
    Heavy Duty
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Product Type:
    Interior
    $22.81 - $41.09
    Qty in Cart: 0
    Price:
    $22.81 - $41.09
    Subtotal:
  • 3-Pin to 3-Prong Light Adapter With 6 Inch Pigtail - Each

    3-Pin to 3-Prong Light Adapter With 6 Inch Pigtail - Each

    UNITED PACIFIC

    $8.22
    3-Way Molded Female Bullet Plug To 3-Way TE AMP Style 1.5mm Plug AdapterThis Molded Plug Adapter is designed to convert and adapt 3-pin markers, clearance lights, stop lights, and turn & tail lights...
    09-16020155
    SKU:
    09-16020155
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    $8.22
    Qty in Cart: 0
    Price:
    $8.22
    Subtotal:
  • 41 Inch Chrome Pogo Stick

    41 Inch Chrome Pogo Stick

    TRAMEC SLOAN

    $53.99
    41 Inch Chrome Plated Steel Pogo StickUpgrade your truck setup with the Chrome Pogo Stick! This sturdy 41-inch tool features a steel support arm with a sleek chrome finish. It pivots at the base for...
    09-05500061
    SKU:
    09-05500061
    Finish Options:
    Chrome-Plated
    Material Options:
    Steel
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $53.99
    Qty in Cart: 0
    Price:
    $53.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    24 Inch Rubber Hose & Cable Suspender With Three 3/8 Inch Holes

    24 Inch Rubber Hose & Cable Suspender With Three 3/8 Inch Holes

    AUTOMANN USA

    Now: $5.14
    Was: $22.67
    Molded Suspender With 3 Holes For 3/4 Inch Air Brake Hose Or Trailer CablesSecure air brake hoses efficiently with the 24 Inch Rubber Hose & Cable Suspender, molded from rubber and featuring three...
    09-05500057
    SKU:
    09-05500057
    Material Options:
    Rubber
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    Now: $5.14
    Was: $22.67
    Qty in Cart: 0
    Price:
    Now: $5.14
    Was: $22.67
    Subtotal:
  • 45 Inch Chrome Fat Can Pogo Stick

    45 Inch Chrome Fat Can Pogo Stick

    TRAMEC SLOAN

    $72.99
    Large Chrome Fat Can Pogo StickKeep your hoses organized with the Chrome Pogo Stick! This 45-inch tool features a sturdy steel support arm and a sleek chrome finish. It easily pivots at the base,...
    09-05500060
    SKU:
    09-05500060
    Truck Class:
    Universal
    Finish Options:
    Chrome-Plated
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $72.99
    Qty in Cart: 0
    Price:
    $72.99
    Subtotal:
  • Gladhands With Red & Blue Extension Grips - Pair

    Gladhands With Red & Blue Extension Grips - Pair

    UNITED PACIFIC

    $28.21
    Gladhands With Extension Grips For Emergency & Service Brake Air HoseExperience hassle-free air lines with Gladhand Extension Grips! These color-coded, easy-to-grip aluminum extension grips are...
    09-05500059
    SKU:
    09-05500059
    Material Options:
    Aluminum
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Air, Electrical, & Safety
    Ready To Ship:
    Yes
    $28.21
    Qty in Cart: 0
    Price:
    $28.21
    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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