Brand: AEM Electronics Manufacturer's Part Number: 30-4406 Part Type: Gauges Product Line: AEM Electronics Digital Display Gauges Automotive Fittings Part Number: AVM-30-4406 UPC: 840879016524 Gauge Type: Boost/Vacuum OEM Replacement: No Gauge Style: Digital Sending Unit: Electrical Gauge Diameter (in.): 2 1/16 in. Gauge Diameter (mm): 52mm Gauge Range: 30 in. Hg/35 psi Gauge Shape: Round Sweep: Digital numeric Gauge Face Color: Black/White Gauge Number Color: Red Bezel Color: Black/Silver Illuminated: Yes Memory Recall: No Playback: No Liquid-Filled: No Shift Light Included: No Tripometer: No Sending Unit Included: Yes Sending Unit Thread Size: 1/8 in. NPT Remanufactured: No Quantity: Sold individually. Description: AEM Electronics digital display gauges feature 24 color-coded LED lights that change from green to yellow to red for immediate reference to the measured parameter. They use a standard 52mm diameter housing that fits in most gauge pods and can be remotely mounted virtually anywhere. The gauges include interchangeable silver and black bezels and white and black faceplates that allow you to personalize the look to your liking. Choose from among a half-dozen instruments provide feedback for specific functions. A harness and sensor are included, so you can easily wire up the gauges and begin monitoring your engine.