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Vendor:iWireiWire Rear O2 Sensor Extension Harness
Regular price $74.99Sale price $74.99 Regular priceUnit price per -
Vendor:iWireiWire Speed Density Wiring Kit 08-14 WRX, 08-21 STI w/Top Mount
Regular price $99.99Sale price $99.99 Regular priceUnit price per -
Vendor:iWireiWire Speed Density Wiring Kit 02-07 WRX, 04-07 STI w/Top Mount
Only 2 leftRegular price $84.99Sale price $84.99 Regular priceUnit price per -
Vendor:iWireiWire Hybrid MAF Wiring Kit for 02-07 Subaru WRX , 04-07 STI w/ Top Mount
Regular price $119.99Sale price $119.99 Regular priceUnit price per -
Vendor:iWireiWire Hybrid MAF Wiring Kit for 08-14 Subaru WRX , 08-21 STI w/ Top Mount
Regular price $119.99Sale price $119.99 Regular priceUnit price per -
UP TO 12% OFFVendor:AEMAEM 20 Amp Relay Wiring Kit - 30-2062
Only 7 leftRegular price $69.69Sale price $69.69 Regular priceUnit price per$78.95 -
UP TO 11% OFFVendor:AEMAEM CD-7/CD-7L Plug & Play Adapter Harness for OBDII CAN Bus - 30-2217
Only 8 leftRegular price $42.94Sale price $42.94 Regular priceUnit price per$48.31 -
UP TO 11% OFFSold OutVendor:AEMAEM Main Harness for X-Series Temp Gauge (30-0302) - 30-3443
Regular price $23.18Sale price $23.18 Regular priceUnit price per$26.08 -
UP TO 11% OFFVendor:AEMAEM Replacement Sensor Harness for Digital Wideband Gauge (30-4110) - 30-3441
Only 8 leftRegular price $42.94Sale price $42.94 Regular priceUnit price per$48.31 -
UP TO 11% OFFVendor:AEMAEM Power Harness for 30-0300 X-Series Wideband Gauge - 30-3459
Only 1 leftRegular price $22.03Sale price $22.03 Regular priceUnit price per$24.78 -
UP TO 11% OFFVendor:AEMAEM CD Carbon Dash 2-Button External Button Kit - 30-3610
Only 2 leftRegular price $67.39Sale price $67.39 Regular priceUnit price per$75.95
Wiring Harnesses
Shop aftermarket wiring harnesses for Subaru WRX, STI, BRZ, and other performance vehicles at IAG Performance. We carry high-quality harnesses from trusted brands like AEM, HKS, and TurboXS designed to support ECU upgrades, gauges, sensors, and other performance electronics while ensuring reliable electrical connections for street, track, and custom builds.