Chesapeake Black 2 Trim Gauge Mercury Mariner Mercruiser Volvo DP Yamaha 01 and newerPerimeter-lighted Black dial with stylish Blue and White graphics, polished stainless steel bezel, contoured White pointer and domed glass lens.2- Hole Size 2.0625 53mmFor Engine TypesMercury Mariner Mercruiser Volvo DP Yamaha 01 and newerSpecificationsAnti-scratch glass lensPerimeter lighted back light12 VDC negative groundCan be adapted for 24 VDC systemsFactory PN GP9402Sold as an IndividualGauge Cove