PERRIN Master Cylinder Brace for 15-21 WRX/STi Fortune Auto • Replaces factory air filter

• Replaces factory air filter and intake tube

Mitsubishi Part Number Diagram PNC Old/Alternate Numbers MD372348 01221 MD050536

(3) Fittings

Designed to install easily into your stock air box and increase power

PERRIN Master Cylinder Brace for 15-21 WRX/STi Fortune Auto • Replaces factory air filterThe PERRIN Master Cylinder Brace prevents unwanted movement of the master cylinder, allowing for increased brake pedal stiffness. Fits these Applications: 2015 2021 Subaru WRX 2015 2021 Subaru STi REDUCE FLEX Your brake pedal is connected to the thin sheet metal firewall which flexes as you apply the brakes. The firewall is not stiff enough to deal with the constant and repeated forces while applying the brakes. The PERRIN Master Cylinder Brace