Ferrea 35mm Competition Plus Intake Valve Subaru WRX / STI EJ25 EJ257 2004-2021 (QTY 8) vendor_Ferodo The K&N intake system also

The K&N intake system also utilizes a heat shield designed to keep ambient engine heat away from the filter

The GrimmSpeed Blow Off Valve Flange Gasket is a direct replacement of the OEM gasket to provide an optimal seal between your blow-off

Part Number: 19

5 horsepower at 5

and do not require modification or re-gapping to run safely on your Mazdaspeed3

Ferrea 35mm Competition Plus Intake Valve Subaru WRX / STI EJ25 EJ257 2004-2021 (QTY 8) vendor_Ferodo The K&N intake system alsoPart #: F1520P Ferrea Competition Plus Valves have built a reputation as the industry's most reliable extreme duty valve. Constructed from aerospace quality alloys, for high tensile strength, Ferrea valves undergo an exclusive two step slow forging process to ensure proper grain flow and virtually eliminate any damage to the material structure. The valves are then heat treated and stress relieved over a 48 hour period, which is the crucial base of our