Semi-Truck Safety Universal
Check out our top-notch semi-truck universal safety products at 4 State Trucks. From durable placard holders to reliable reflective tapes and sturdy air hoses, we've got your safety covered. Need a new coupler or a pogo stick? We have those too. Equip your rig with the best gear and stay safe on the road!
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7-Way RV Blade Custom Wiring Harness Extension Isolator Hardware Kit For Aluminum Truck Beds
CURT MANUFACTURING
$13.19Custom Wiring Harness Extension Isolator Hardware Kit For Aluminum Truck Beds * High Quality Hitch* Securely Mounts A 7-Way RV Blade Extension Harness In An Aluminum Truck Bed * Neoprene Well Nuts Isolate Steel Bolts From Aluminum Surfaces * Includes...$13.19 -
Vehicle-Side 4-Way Round Connector Socket W/ Spring-Loaded Dust Cover
CURT MANUFACTURING
$17.29Die-Cast Metal Vehicle-Side 4-Way Round Trailer Wiring Harness Socket W/ Spring-Loaded Dust Cover * High Quality Connector Socket* Splices Into Vehicle Wiring To Provide A Connection For A Trailer Plug * 4-Way Round Output Connects Tail Lights, Brake...$17.29 -
4-Way Flat License Plate Light Plug Connector Socket W/ 36 Inch Wires
CURT MANUFACTURING
$6.594 Way Flat License Plate Light Plug Connector Socket W/ 36 Inch 16-Gauge Color Coded Wire * High Quality License Plate Light Plug Connector Socket* Splices Into Vehicle Wiring To Provide A Connection For A Trailer Plug * 1-1/4 Inch Plug Fits A Typical...$6.59 -
Powered 3-To-2 Wire Taillight Converter W/ 4-Way Flat Output
CURT MANUFACTURING
$90.99Splice-In Powered 3-To-2 Wire Taillight Converter W/ 4-Way Flat Output, Snap Locks & Color-Coded Wires * High Quality Taillight Converter* Converts 3-Wire Vehicle Electrical System To Standard 2-Wire Trailer Wiring * 4-Way Flat Output Connects Tail...$90.99 -
Vehicle-Side 7-Way RV Blade Connector Socket W/ Integrated Bracket
CURT MANUFACTURING
$14.69Vehicle-Side 7-Way RV Blade Connector Socket W/ Integrated Bracket, Concealed Terminals & Spring Loaded Dust Cover * High Quality RV Blade Connector Socket * Splices Into Vehicle Wiring To Provide A Connection For A Trailer Plug * 7-Way Connects Tail,...$14.69 -
5-Way Flat Connector Mounting Bracket W/ Hardware
CURT MANUFACTURING
$6.595-Way Flat Connector Mounting Bracket * High Quality Connector Mounting Bracket* Securely Mounts A 5-Way Flat Connector Socket * Allows For Attachment To The Vehicle Or Trailer Hitch * Constructed From High-Strength Steel * Protected By A Durable Black...$6.59 -
Vehicle-Side 6-Way Round Connector Tester W/ LED Indicators
CURT MANUFACTURING
$13.19Black Plastic Vehicle-Side 6-Way Round Connector Tester W/ LED Indicators For Brake, Turn, Electric Brakes, Aux. Power * High Quality Connector Tester* Confirms Proper Function Of Vehicle-Side Wiring Connector * Tests 6-Way For Tail, Brake, Turn Signals,...$13.19 -
1.25 Inch 4-Way Flat License Plate Light Plug Adapter
CURT MANUFACTURING
$8.091.25 Inch 4-Way Flat License Plate Light Plug Adapter * High Quality License Plate Light Plug Adapter* Allows A 4-Way Flat Socket To Be Mounted In A License Plate Light Hole * 1-1/4 Inch Plug Fits A Typical License Plate Light Hole * Simple Plug-And-Play...$8.09 -
5-Way Flat Connector Socket W/ 60 Inch 16-G Color Coded Wires
CURT MANUFACTURING
$11.89Vehicle-Side 5-Way Flat Connector Socket W/ 60 Inch 16-G Color Coded Wires * High Quality Connector Socket* Splices Into Vehicle Wiring To Provide A Connection For A Trailer Plug * 5-Way Flat Connects Tail Lights, Brake Lights, Turn Signals And Reverse...$11.89 -
Powered 3-To-2 Wire Taillight Converter W/ Potted Enclosure, 4-Way Flat Output
CURT MANUFACTURING
$88.99Weather-Resistant, Powered 3-To-2-Wire Splice-In Trailer Taillight Converter W/ 4 Pin Wiring Harness * High Quality Taillight Converter* Converts 3-Wire System To 2-Wire Trailer Light Wiring * Potted Enclosure Significantly Increases Water And Vibration...$88.99 -
4-Way Flat License Plate Light Plug Adapter
CURT MANUFACTURING
$5.294-Way Flat License Plate Light Plug Adapter * High Quality License Plate Light Plug Adapter* Allows A 4-Way Flat Socket To Be Mounted In A License Plate Light Hole * 1-1/4 Inch Plug Fits A Typical License Plate Light Hole * Simple Plug-And-Play Design...$5.29 -
Powered 3-To-2 Wire Taillight Converter W/ 4-Way Flat Output, Snap Locks, & Color Coded Wires
CURT MANUFACTURING
$46.99Splice-In 3-To-2 Wire Trailer Tail Light Converter W/ Snap Locks, Color Coded Wires & 4-Pin Wiring Harness * High Quality Taillight Converter* Converts 3-Wire Vehicle Electrical System To Standard 2-Wire Trailer Wiring * 4-Way Flat Output Connects Tail...$46.99