Flushes cooling system of salts and sediments, which allows engine to idle for tuning and engine adjustment in your own driveway. The universal engine flusher simply slips over the engine's side water intakes. Coated spring steel arms clamp suction cup securely over the engine's side water intakes. Corrosion resistant dicromate finish. Installs in seconds. Use with a standard garden hose. No tools required.