The Life Blood Of Your Engine, A Lack Of Oil Pressure Is One Of The Most Catastrophic Scenarios That Can Happen. Knowing The Precise Pressure Is Critical To Both Its Longevity And Performance, As Well As Your Peace Of Mind. Autometers Mechanical Oil Pressure Gauge Utilizes The Most Advanced Bourdon Tube Meter Movement On The Market To Deliver Accuracy And Durability You Wont Find Anywhere Else. A Simple 1/8" Npt Connection Makes Installation Easy. Optional Braided Stainless Line Kits Are Available Separately.