Porsche Light Ventilation Tube - 911 89-94 964-631-423-00 7L0422817D This round air filter is

This round air filter is a replacement filter designed to improve your vehicle's engine performance and airflow

0438100059

yet large chamfer in bushing hole allows for easier replacement of the bushing

It also known as "beauty rings"

Boxster S (2004)

Porsche Light Ventilation Tube - 911 89-94 964-631-423-00 7L0422817D This round air filter isPorsche Light Ventilation Tube For Porsche 964 (1989 1994) Models. This Light Ventilation Tube, 911 (89 94), designed for Porsche cars, is a high quality ventilation pipe for the rear centre light unit. With a durable construction and precise fit, it provides optimal airflow to the light unit for improved performance and longevity. A must have for Porsche owners.