We recommend that all stock rubber vacuum lines be replaced with Silicone Vacuum Hose for reliability and safety. The stock lines have a tendency to harden and crack with age.

Stock Vacuum Lines	Vacuum Line Simplification

See example below. Please note that we now use Black Silicone Hose.

Example of FD3s Mazda RX-7 Vacuum Line Replacement
Vacuum Lines Side View	Vacuum Lines Top View	Front View	Solenoid Rack Before	Solenoid Rack After

Vacuum Line Simplification costs vary according to the vehicle modifications and application. Contact Sales for a quote to replace your vacuum lines.