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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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 -
Die-Cast Metal 7-Way Vehicle-Side RV Blade Connector Socket For Tail, Brake, Reverse, Turn Signals, Aux. Power
CURT MANUFACTURING
$13.197-Way Vehicle-Side RV Blade Connector Socket * High Quality RV Blade Connector Socket* Splices Into Vehicle Wiring To Provide A Connection For A Trailer Plug * 7-Way Connects Tail, Brake, Reverse, Turn Signals, Brakes And Auxiliary Power *...$13.19 -
Gloss Black 7-Way RV Blade Connector Mounting Bracket - Packaged
CURT MANUFACTURING
$5.297-Way RV Blade Connector Mounting Bracket * High Quality Connector Mounting Bracket* Made Of Steel* Color: Black* Securely Mounts 7-Way RV Blade Connector Socket Number 09-055000021 (Not Included)* Allows For Attachment To The Vehicle Or Trailer Hitch *...$5.29 -
Molded Rubber 4-Way Flat Connector Dust Cover Set
CURT MANUFACTURING
$5.394-Way Flat Connector Dust Cover Set * High Quality Connector Dust Cover Set * Made Of Rubber* Protects Connectors From Water, Dust And Road Grime When Not In Use * Helps Prevent Internal Corrosion For A Long Operating Life * Fits Virtually Any 4-Way Flat...$5.39 -
7-Way RV Blade Connector Tester For Tail, Brake, Reverse, Turn Signal, Auxiliary Power
CURT MANUFACTURING
$16.69Curt 7-Way to RV Socket LED Circuit Tester - Vehicle EndMake sure your vehicle's trailer wiring is in good working order with this connector tester! It checks taillights, brake lights, reverse lights, turn signals, electric trailer brakes, and auxiliary...$16.69 -
Molded Rubber 4-Way Vehicle-Side Flat Connector Dust Cover
CURT MANUFACTURING
$0.99Molded Rubber Dust Cover For 4-Way Vehicle-Side Flat Connector * High Quality Connector Dust Cover* Made Of Rubber* Protects Connector From Water, Dust And Road Grime When Not In Use * Helps Prevent Internal Corrosion For A Long Operating Life * Fits...$0.99 -
7-Way Vehicle-Side RV Blade Connector Socket Connects Tail, Brake, Reverse, Turn Signals, Auxiliary Power
CURT MANUFACTURING
$10.09Black Plastic 7-Way Vehicle-Side RV Blade Connector Socket W/ Concealed Terminals * High Quality RV Blade Connector Socket* Made Of Plastic* Color: Black* Splices Into Vehicle Wiring To Provide A Connection For A Trailer Plug * 7-Way Connects Tail,...$10.09 -
Replacement 4-Way Flat Socket Plugs For USCAR Connection
CURT MANUFACTURING
$48.99Plug-And-Play 4-Way Flat Socket Plugs Into USCAR Connection * High Quality Socket Plugs* Plugs Into USCAR Connection To Add 4-Way Flat And Retain Use Of Existing Socket * Simple Plug-And-Play Design Eliminates The Need For Cutting Or Splicing * 4-Way...$48.99