Cobb Hardware Kit for SS 3-inch Cat Back Exhaust Subaru WRX 2015-2021 / STI 2015-2021 | 515132-HW Vehicle Model_Z RZ34 Radiators are Chassis specific not

Radiators are Chassis specific not motor specific

The 3-inch piping allows for excellent flow while the 4

but it appears that they will be compatible (Rally Armor and Rokblokz)

5-Ply Silicone Couplers - custom molded and reinforced for demanding environments

helping protect your engine during spirited driving

Cobb Hardware Kit for SS 3-inch Cat Back Exhaust Subaru WRX 2015-2021 / STI 2015-2021 | 515132-HW Vehicle Model_Z RZ34 Radiators are Chassis specific notFitment Information: 2015 2021 Subaru WRX 2015 2021 Subaru STI Note: This replacement hardware kit has been specifically designed for the Cobb Stainless Steel 3 inch Cat Back Exhaust systems for your 15 21 WRX & 15 21 STI, and are available to purchase separately. Features: Has your hardware for your Cat Back gone missing or need to be replaced? COBB Tuning is happy to offer you a Hardware Kit to replace those components that have decided to walk