The STM MAF extension harness for 2015-2021 Subaru WRX is needed to install most aftermarket intakes to extend the factory wiring for a proper fit. This is a 16" extension, making the harness 19" overall. Direct plug and play with a protective loom around the wires.
Vehicle Fitment: 2015-2021 Subaru WRX
Features: • Direct Plug & Play • 19" Long • High Quality Wire • Protective Loom