Collection: Auto - Leak

Identify and eliminate fluid loss before it leads to costly damage with our selection of Auto Leak diagnostic and repair components. At DIY Customs, we provide high-visibility UV leak detection dyes for oil, coolant, and A/C systems, durable UV flashlights and detection glasses, specialized stop-leak sealants, and heavy-duty smoke machine fluid designed for a perfect fit. Whether you are tracing a stubborn vacuum leak in a performance engine, sealing a minor radiator pinhole, or diagnosing a refrigerant leak in your climate control system, our professional-grade hardware offers the precision and effectiveness you need at unbeatable prices. From specialized fuel system dyes to comprehensive multi-system detection kits, we carry the essential gear to keep your vehicle leak-free. Don't see the specific dye type, detection light wattage, or specialized sealant for your repair? Hit the live chat or call 412-882-8346—we can special order and drop-ship exactly what you are looking for directly to your doorstep!