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![K&N Universal Custom Air Filter - Round 1.625in Flange / 1.625in ID / 2.75in Overall Height 'Truck Exhaust'] Subaru WRX STI Type RA](https://cdn.shopify.com/s/files/1/0590/5131/1259/files/2665325c6ba2d07b49cd8a3a2cb3dcad.jpg?v=1751506450)
![K&N Universal Custom Air Filter - Round 1.625in Flange / 1.625in ID / 2.75in Overall Height 'Truck Exhaust'] Subaru WRX STI Type RA](https://cdn.shopify.com/s/files/1/0590/5131/1259/files/76502c40a6f0583878c3b5f14557c341.jpg?v=1751506450)
![K&N Universal Custom Air Filter - Round 1.625in Flange / 1.625in ID / 2.75in Overall Height 'Truck Exhaust'] Subaru WRX STI Type RA](https://cdn.shopify.com/s/files/1/0590/5131/1259/files/ef14658100dd7abc7ecc6de49a8bebd3_eba10eb6-a0fa-431a-9b16-e963bf4e94fd.jpg?v=1751506450)
Subaru WRX STI Type RA 2018
Reinforced Silicone Intake Tube:This intake system utilizes a flexible silicone intake tube that is reinforced with four layers of nylon material
Simple Installation
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K&N Universal Custom Air Filter - Round 1.625in Flange / 1.625in ID / 2.75in Overall Height 'Truck Exhaust'] Subaru WRX STI Type RAK&N Custom Air Filters for Single or Two Barrel Carburetors K&N custom air filter kits are designed to boost performance from your carburetor while keeping the dirt on the outside where it belongs. These assemblies come with custom chrome top and base plates and the famous K&N High Flow Washable Air Filter. K&N Custom Air Filter kits are designed to boost the performance from your carburetor while keeping dirt on the outside where it belongs. These
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