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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 3 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 $16.23 OFFVendor:AEMAEM 20 Amp Relay Wiring Kit - 30-2062
Only 5 leftRegular price $62.72Sale price $62.72 Regular priceUnit price per$78.95 -
Up to $9.66 OFFVendor:AEMAEM CD-7/CD-7L Plug & Play Adapter Harness for OBDII CAN Bus - 30-2217
Only 7 leftRegular price $38.65Sale price $38.65 Regular priceUnit price per$48.31 -
Up to $5.22 OFFVendor:AEMAEM Main Harness for X-Series Temp Gauge (30-0302) - 30-3443
Only 2 leftRegular price $20.86Sale price $20.86 Regular priceUnit price per$26.08 -
Up to $9.66 OFFVendor:AEMAEM Replacement Sensor Harness for Digital Wideband Gauge (30-4110) - 30-3441
Only 7 leftRegular price $38.65Sale price $38.65 Regular priceUnit price per$48.31 -
Up to $4.95 OFFVendor:AEMAEM Power Harness for 30-0300 X-Series Wideband Gauge - 30-3459
Only 3 leftRegular price $19.83Sale price $19.83 Regular priceUnit price per$24.78 -
Up to $15.30 OFFVendor:AEMAEM CD Carbon Dash 2-Button External Button Kit - 30-3610
Only 2 leftRegular price $60.65Sale price $60.65 Regular priceUnit price per$75.95 -
Vendor:Turbo XSTurbo XS 15-21 Subaru WRX STI Hella Horn Wiring Harness - WS15-HHWH
Regular price $48.00Sale price $48.00 Regular priceUnit price per
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.