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Manufacturer Part Nos: 13581AA051 (Upper)
Dampening the transfer of valvetrain shock reduces stress and increases the life of components
Max Boost = 50psi
and 32 radial groove valve locks
Upgrade valve springs required
COBB Intake Tube & Filter Kit - VB WRX 22433AA542 Manufacturer Part Nos: 13581AA051 (Upper)SMOOTH FLOW COBB 3 inch mandrel bent aluminum tube with smooth flow and minimal restriction connects the factory airbox to the turbocharger inlet. The high flow replacement panel filter is designed to permit very high flow rates with long life. Reinforced silicone hose couplers complete the package. Because the factory airbox on these models now incorporates a hydrocarbon trap (an emissions device), a full intake system is no longer street legal. This
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