Mercury – SC1000 Tach/Speed Kit | 80 MPH Speedometer & 7K Tachometer | Single Engine | Black Face | 79-8M0185920Mercury SC1000 Tach Speed Kit 80 MPH Speedometer & 7K Tachometer Single Engine Black Face 79 8M0185920 Overview The Mercury SC1000 Tach Speed Kit (79 8M0185920) gives your single engine boat a clean, factory style SmartCraft gauge package. The kit includes an 80 MPH SC1000 speedometer and a 7000 RPM SC1000 tachometer, both with black faces, white numerals, and glass lenses for a sharp, easy to read finish. Its designed for single engine SmartCraft