JCE Racing carries the largest selection of Boost Gauges on the market including Defi, AutoMeter, AEM Electronics, Apexi and many more. A boost gauge is a pressure gauge that indicates manifold air pressure or turbocharger or supercharger boost pressure in an internal combustion engine. They are commonly mounted on the dashboard, on the driver's side pillar, or in a radio slot. Buy online 24/7 and enjoy our Free Shipping with no minimum purchase offer. If you don't see what you are looking for Chat with Us, We can help.