Wiring Harness

Genuine OEM Wiring Harnesses & Electrical Connectors

Eliminate diagnostic headaches and ensure reliable electrical communication with our selection of genuine OEM wiring harnesses. We carry authentic overstock harnesses for Mack, Volvo, PACCAR, and Cummins systems, designed to match your vehicle’s factory specifications for a true plug-and-play installation.

Our inventory features specialized looms for every part of the vehicle, including engine wiring harnesses, instrument gauge harnesses, and chassis lighting looms. We also stock essential repair components like pigtail connectors, terminal blocks, and trailer light adapters. By choosing factory-spec OEM harnesses, you avoid the voltage drops and circuit failures common with aftermarket repairs, ensuring your sensors, lights, and modules communicate perfectly.

Filters

Online Exclusive

SALE UP TO 25% OFF

Shop The Sale
Availability
Price
From $
To
To $
W94005 Proximity-Switch Wiring Harness for 2007840

W94005 Proximity-Switch Wiring Harness for 2007840

Regular price $23.63
Sale price $23.63 Regular price $0.00
Unit price
Volvo/MACK Truck 23171672 - Multi-Purpose Wiring Harness

Volvo/MACK Truck 23171672 - Multi-Purpose Wiring Harness

Regular price $287.63
Sale price $287.63 Regular price $0.00
Unit price
GRO 01 4811 82 Freightliner TURNSIGNAL W/HARNESS

GRO 01 4811 82 Freightliner TURNSIGNAL W/HARNESS

Regular price $88.76
Sale price $88.76 Regular price $0.00
Unit price
Cummins P/N: "2892084" ECM Calibration Bench Test Harness

Cummins P/N: "2892084" ECM Calibration Bench Test Harness

Regular price $113.44
Sale price $113.44 Regular price $162.05
Unit price
Cummins P/N | 4918802 ECM Calibration Bench Test Harness

Cummins P/N | 4918802 ECM Calibration Bench Test Harness

Regular price $198.77
Sale price $198.77 Regular price $283.96
Unit price
Cummins P/N | 3163151 ECM Bench Calibration Base Test Harness

Cummins P/N | 3163151 ECM Bench Calibration Base Test Harness

Regular price $188.08
Sale price $188.08 Regular price $268.69
Unit price
Cummins P/N 4352672 Wiring Harness Fits ISX Engines for Mack-Pete-Freightli

Cummins P/N 4352672 Wiring Harness Fits ISX Engines for Mack-Pete-Freightli

Regular price $272.56
Sale price $272.56 Regular price $389.37
Unit price
BX800717 by Bendix SENSOR Wheel Speed Transmitter

BX800717 by Bendix SENSOR Wheel Speed Transmitter

Regular price $96.64
Sale price $96.64 Regular price $0.00
Unit price
64MO2146M OEM Mack Instrument Gauge Wiring Harness NOS

64MO2146M OEM Mack Instrument Gauge Wiring Harness NOS

Regular price $24.93
Sale price $24.93 Regular price $0.00
Unit price
Complex automotive wiring harness on a white background
Complex automotive wiring harness on a white background

Genuine Cummins 5475059 ECM Wiring Harness | QSM11, ISM, ISM11, M11 Engines | OEM New

Regular price $2,145.05
Sale price $2,145.05 Regular price $3,180.49
Unit price
4497230180 Cable ABS Sensor Extension Wabco

4497230180 Cable ABS Sensor Extension Wabco

Regular price $31.63
Sale price $31.63 Regular price $0.00
Unit price
41MR21123M Harness for OEM Mack Truck

41MR21123M Harness for OEM Mack Truck

Regular price $62.37
Sale price $62.37 Regular price $0.00
Unit price
« 1 2 3 »
Sort by
  • Featured
  • Most relevant
  • Best selling
  • Alphabetically, A-Z
  • Alphabetically, Z-A
  • Price, low to high
  • Price, high to low
  • Date, old to new
  • Date, new to old