Sierra 58935P: 3 inch tachometer for Johnson/Evinrude engines with 0-7000 RPM range Warranty coverage: All Sierra parts, including this tachometer, qualify for Sierra's customer satisfaction warranty High-quality materials: Engineered with durable stainless steel to withstand harsh marine environments Dimensions: Product measures 6 x 4.5 x 8 inches (width x length x height) Weight: Item weighs 12 ounces for easy installation Brand reputation: Sierra, a trusted name in the marine industry for 50 years, offers this product