Autometer makes checking your fuel level easy with their gauges. Their patented air core meter movement provides the durability & accuracy you expect. A single wire, 1/8" NPT Oil Pressure Sender is included. SPECIFICATIONS-Traditional Incandescent Lighting Illuminates Around the Perimeter of the Dial-Autometer has Proven Track Record in Delivering Quick & Accurate Readings-12 & 16 Volt Compatible, Compatible with Nearly Every Street & Race Car Electrical System-Gauge Kit Includes 1/8" NPT Pressure Sender, 1/4" NPT Adapter, Bulb & Socket Assemblies, Red & Green Bulb Covers, Mounting Hardware & Detailed Installation Instructions-Light Covers: Red 3214 & Green 3215-Sending Units: 2242-Mounting Hardware: 2230-Bulb & Socket: 3220-Size: 2-1/16" (52.4mm)-Type: Air-Core-Range: 0-100 PSI-Lighting: Incandescent