Airaid Universal Air Filter - Cone 3-1/2in Flange x 6in Base x 4-5/8in Top x 9in Height - Synthaflow 2023-subaru-wrx-base-esi8102976 Replace the Polyphonic Harmonizer behind

Replace the Polyphonic Harmonizer behind the muffler in this ATAK® system with muffler 60679 to attain the S-Type sound level (quieter than ATAK®)

and precision computer controlled CNC manufacturing ensures an accurate fit

Includes a High-Flow 22" Stainless Steel Muffler

constructed of heat-resistant XLPE (cross-linked polyethylene) polymer

100 micron stainless steel (coarse) cleanable element

Airaid Universal Air Filter - Cone 3-1/2in Flange x 6in Base x 4-5/8in Top x 9in Height - Synthaflow 2023-subaru-wrx-base-esi8102976 Replace the Polyphonic Harmonizer behindThe AIRAID Premium Filter is a performance, high air flow air filter that is designed to increase horsepower and torque for your engine. The air filter is constructed with multiple layers of filter media combined with AIRAID's unique filtration technology resulting in a superior filtration system. AIRAID Premium Filters efficiently filter dirt particles in a way that ordinary cotton gauze performance filters are unable to. Whether you have a custom