If you're looking for a performance panel filter for your Subaru Impreza WRX or STI then the Cosworth Panel Filter is a great choice and our top selling panel filter.
Its a direct replacement for the original Subaru Panel Filter and provides excellent filtration and superior performance and as you'd expect from a Cosworth product.
Suitable as a direct fit for the following models
Impreza Turbo 1993-2000 including UK, GT, WRX and STI
Impreza WRX and STI 2001-2007 - Bugeye, Blobeye and Hawkeye.
Does not fit the Hatchback onwards model as these use a different version.
Being a dry Panel Filter theres no need to remove and re-oil at any time, simply replace at normal scheduled service intervals.
Theres no requirement for any adjustment to your ECU, or exhaust system, however its a popular choice for those going for a Stage 1 tune of Performance Exhaust and ECU remap.
Works great when combined with one of our exhaust systems alongside an ECU remap
Improved performance & Superior filtration.
Exceptional dust holding capacity.
Reduced restriction (10%+ compared to OE filters).
Over 98% efficiency (ISO5011:200 Fine Dust Test).