This 52mm 2 inch mechanical turbo boost and vacuum gauge is an essential monitoring instrument for turbocharged modified vehicles. The gauge supports dual scale readings ranging from -30 In.Hg vacuum up to 35 PSI boost pressure, allowing drivers to observe intake vacuum and turbo boost value in real time during driving. It comes as a complete kit including pressure tubing, wiring harness and detailed installation manual to support straightforward DIY assembly. Equipped with backlight dial, the gauge provides clear readability under dark driving environments. The 52mm standard circular housing fits most universal gauge pods and dashboard mounting openings commonly used in automotive modification. The internal mechanical structure delivers stable and responsive pressure feedback, helping drivers avoid excessive boost pressure which may cause damage to turbochargers and engines. Proper boost monitoring assists enthusiasts in tuning fuel and boost settings for optimized engine performance. This mechanical boost gauge requires no complex electronic sensors; pressure signals are transferred directly via tubing, reducing failure points compared to electronic gauges. Suitable for most gasoline turbocharged passenger cars, pickup trucks and modified racing vehicles. It is a cost-effective interior upgrade accessory for tuners and offroad enthusiasts, offering reliable pressure data to keep turbo systems operating within safe working parameters during daily driving and track use.