Engine Coolant Breather Line - 911 | 1999-2004 996-423-171-54 The K&N Engineering High-Flow Air

The K&N Engineering High-Flow Air Filter is a high-performance air filter designed to improve your vehicle's horsepower and acceleration

Upgrade your Porsche's climate control system with an authentic OEM Heater Control Knob

Durable: Designed to be lifetime filters for the vehicle

Porsche Air Conditioning Refrigerant Line For Porsche 993 (1996-1997) Models

Superior Adjustability: Left and right-hand threaded rod ends allow for simple length adjustments

Engine Coolant Breather Line - 911 | 1999-2004 996-423-171-54 The K&N Engineering High-Flow AirEngine Coolant Breather Line For Porsche 996 (1999 2004) Models. Engine Coolant Breather Line designed specifically for Porsche 911 models. This precision engineered component manages coolant system pressure and prevents air locks that can compromise engine performance. The breather line maintains optimal coolant circulation by allowing excess pressure to escape while preventing contaminants from entering the system. Essential for reliable cooling