This is a Subaru OEM factory battery harness. Excessive corrosion or amperage draw can necessitate the replacement of your battery cable; this replacement cable assembly is identical to what was originally supplied with your car.
The negative battery terminal is pre-installed to this harness. The positive battery terminal is sold separately HERE.
Product photo is representative; actual product appearance may vary slightly.
Fits all 2008-2014 Subaru STI cars.