Air Check Valve - 911 | 1984-1998 SMC-000-631-50--BKB The Retainer Trim (Left) for

The Retainer Trim (Left) for Porsche 911/Boxster/Cayman (05-12) is expertly designed and crafted in a sleek Volcano Grey color

Porsche Lower window aluminum trim for the right side of 928 (1978-1995) models

Numeric Racing's upgraded shifter delivers smooth

Stone Guard Decal on Quarter Panel (Rear Section) for 911 (1989-2013)

Color: Blue (as implied by "Blue Wireless Computer Mouse

Air Check Valve - 911 | 1984-1998 SMC-000-631-50--BKB The Retainer Trim (Left) forAir Check Valve For Porsche 911 (1984 1989) 964 (1989 1994) 993 (1995 1998) Models. The Air Check Valve for Porsche 911 controls airflow within the engines vacuum system, preventing backflow and ensuring proper operation of emission controls. Built for a precise fit, it helps maintain engine efficiency and supports clean emissions. An essential component for preserving your Porsches performance and environmental compliance.