Semi-Truck Safety, Air & Electrical Universal
Semi-Truck Safety, Air & Electrical parts from 4 State Trucks can help keep your truck on the road. From air compressors and valves to fuses and lights, find the parts you need for air system maintenance and electrical repairs. Explore our selection to help maintain your truck's performance.
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6-Way Square Connector Plug, Socket W/ 12 Inch Wires Connects Tail, Brake, Turn Signal, Aux. Power
CURT MANUFACTURING
$10.996-Way Square Connector Plug, Socket W/ 12 Inch Color-Coded Wires * High Quality Connector Plug And Socket* Color Coded Wires* Splices Into Existing Wiring To Provide Connections For Both Vehicle And Trailer * Looped Wire Can Also Be Used As A Wire...$10.99 -
Gloss Black 4-Way Flat Connector Mounting Bracket
CURT MANUFACTURING
$4.094-Way Flat Connector Mounting Bracket * High Quality Connector Mounting Bracket* Made Of Steel* Color: Black* Securely Mounts 4-Way Flat Connector Sockets * Allows For Attachment To The Vehicle Or Trailer Hitch * Constructed From High-Strength Steel *...$4.09 -
Gloss Black 7-Way RV Blade Connector Mounting Bracket
CURT MANUFACTURING
$2.697-Way RV Blade Connector Mounting Bracket * High Quality Connector Mounting Bracket* Made Of Steel* Color: Black* Securely Mounts 7-Way RV Blade Connector Sockets * Allows For Attachment To The Vehicle Or Trailer Hitch * Multiple Screw Holes Offer...$2.69 -
7-Way RV Blade Connector Plug, Socket W/ Hardware Connects Tail, Brake, Reverse, Turn Signals, Aux. Power
CURT MANUFACTURING
$23.797-Way RV Blade Connector Plug & Socket W/ Hardware * High Quality RV Blade Connector Plug And Socket* Made Of Plastic* Splices Into Existing Wiring To Provide Connections For Both Vehicle And Trailer * 7-Way Connects Tail, Brake, Reverse, Turn Signals,...$23.79 -
Vehicle-Side 6-Way Round Connector Socket W/ Spring-Loaded Dust Cover
CURT MANUFACTURING
$11.89Diecast Metal Vehicle-Side 6-Way Round Connector Socket W/ Concealed Terminals * High Quality Connector Socket* Splices Into Vehicle Wiring To Provide A Connection For A Trailer Plug * 6-Way Connects Tail, Brake, Turn Signals, Electric Brakes And...$11.89 -
4-Way Flat Connector Socket W/ 60 Inch 16-G Color-Coded Wires
CURT MANUFACTURING
$7.094-Way Flat Connector Socket Connects Tail, Brake & Turn Signal Lights * High Quality Connector Socket * Made Of Rubber* Color Coded Wires* Splices Into Vehicle Wiring To Provide A Connection For A Trailer Plug * 4-Way Flat Output Connects Tail Lights,...$7.09 -
4-Way Flat Connector Plug, Socket W/ 12 Inch 16-G Color Coded Wires
CURT MANUFACTURING
$5.694-Way Flat Connector Plug & Socket W/ 12 Inch 16-G Color Coded Wires * High Quality Connector Plug And Socket* Made Of Rubber* Color Coded Wires* Splices Into Existing Wiring To Provide Connections For Both Vehicle And Trailer * Looped Wire Can Also Be...$5.69 -
4-Way Flat Connector Socket W/ 60 Inch 16-G Color-Coded Wires - Package
CURT MANUFACTURING
$10.594-Way Flat Trailer Connector Socket W/ 60 Inch 16-G Color-Coded Wires * High Quality Connector Socket* Made Of Rubber* Color Coded Wires* Splices Into Vehicle Wiring To Provide A Connection For A Trailer Plug * 4-Way Flat Output Connects Tail Lights,...$10.59 -
Vehicle-Side 7-Way RV Blade Connector Socket W/ Concealed Terminals
CURT MANUFACTURING
$12.79Black Plastic Vehicle-Side 7-Way RV Blade Connector Socket For Tail, Brake, Reverse, Turn Signals & Brakes * High Quality RV Blade Connector Socket* Made Of Plastic* Splices Into Vehicle Wiring To Provide A Connection For A Trailer Plug * 7-Way Connects...$12.79 -
Plug-And-Play Replacement OE 7-Way RV Blade Socket For USCAR Socket
CURT MANUFACTURING
$19.39Replacement OE 7-Way RV Blade Socket For USCAR Socket * High Quality 7-Way RV Blade Socket* Plugs Into USCAR Socket To Provide 7-Way RV Blade Trailer Wiring Connector * Simple Plug-And-Play Design Eliminates The Need For Cutting Or Splicing * 7-Way...$19.39 -
Dual-Output 4-Way Flat, 7-Way RV Blade Connector Plugs Into USCAR Socket
CURT MANUFACTURING
$45.29Plug-And-Play Dual-Output 4-Way Flat & 7-Way RV Blade Connector * High Quality Dual-Output 7 And 4 Way Connector-* Plugs Into USCAR Socket To Provide 4-Way And 7-Way Trailer Wiring Connectors * Fits USCAR-Equipped Vehicles With Factory Tow Plugs Only *...$45.29 -
Replacement USCAR 7-Way Socket W/ 24 Inch Wires
CURT MANUFACTURING
$25.99USCAR 7-Way Socket W/ 24 Inch Color-Coded Bonded Wires * High Quality USCAR Socket * Made Of Plastic* Color Coded Wires* Replaces Damaged Or Missing USCAR Vehicle Harness * Includes 24 Inch Color-Coded, Bonded Wires For Easy Installation * Made In USA*...$25.99