Engines don't like high water temperatures, Heat is the enemy of performance and reliability. Keep tabs on your temps with the most accurate, quickest responding water temperature gauge on the market. AutoMeter's advanced bourdon tube meter movement provides unparalleled performance in the most demanding applications. A 6' capillary tube and 1/2” NPT mounting nut are included.Features: Luminescent dials glow green at night for dimly lit tracks when no battery is available to light conventional instruments For racing use only - Not intended for street applications No electrical system required for gauge operation - compatible with every street or race vehicle Liquid dampened movement provides smooth pointer movement and extended service life in harsh environment applications. Liquid filled design for superior resistance to shock, vibration, and the elements. Gauge kit includes 1/2" NPT adapter, bulb and socket assembly, red and green bulb covers, mounting hardware, and detailed instructions for installation Product Description: 2-5/8" Water Temperature Gauge, Liquid Filled, 140-280°F, Ultra-NitePit Stop USA offers Auto Meter 2-5/8" Ultra-Nite Water Temp Gauge - 140-280 4231 at low everyday prices. Be sure to check out all our products from Auto Meter including Auto Meter Mechanical Water Temp Gauges.