ST203

Diagnostic Leak Detector

FOXWELL ST203 Automotive Smoke Machine Kit with Pressure Gauge & Flow Meter

The FOXWELL ST203 is a professional-grade diagnostic smoke machine designed for technicians and experienced DIYers, offering a complete solution to check readings, trace leaks, and verify repairs. Unlike standard visual testers, it features a front-mounted pressure gauge and flow meter that provide real-time, visual data feedback—allowing you to precisely locate hard-to-spot vacuum leaks and solve tough trouble codes rather than blindly replacing parts. Powered directly by a 12V vehicle battery, its built-in air pump eliminates the need for a bulky external compressor and long hoses, making it highly portable for driveways, home garages, or roadside testing. The dual-mode workflow (Air Mode for pre-checking seals and Smoke Mode for tracing) combined with precise smoke-flow control saves fluid and streamlines your troubleshooting process. Built for repeat use, it features a rugged metal housing, rapid dense smoke output, and comes with a comprehensive 23-piece adapter kit for out-of-the-box convenience—making it a highly cost-effective, professional-grade tool for your workshop.