Sierra 57900P Amega 3 Inch Speedometer Kit, 65 MPH, Black Dial

The Sierra 57900P is an Amega 3-inch speedometer kit rated to 65 MPH, built for boaters who want a clean, highly readable instrument with a black dial. The dial uses red graduations, white numerals, and a vivid white pointer staff for strong contrast and quick visibility both day and night, backed by perimeter and thru-dial lighting. The lens is scratch resistant curved glass set in a black, near-flush bezel for a low-profile finish that mounts cleanly into the dash. The dial reads in both U.S. And metric scales with ISO symbols where appropriate, making it suitable for boaters who reference either measurement system. This is part of the Amega line, a black-dial gauge series that has been offered since 1986 and remains a popular choice for boat dash upgrades and replacements. Installation requires a 3.43 inch mounting hole and the unit operates on 12 volts. The kit includes one speedometer gauge as the included component. Because it is sold as a standalone gauge, it can be paired with matching Amega instruments to build out a full dash, or used on its own to replace a failed or outdated speedometer.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 57900P
• Product Line: Amega
• Item Type: Speedo Kit, Amega 3 inch 65 mph
• Speed Range: 65 MPH
• Dial Diameter: 3 inches
• Mounting Hole Size: 3.43 inches
• Dial Color: Black
• Graduation Color: Red
• Numeral Color: White
• Pointer Color: White
• Lens: Scratch resistant curved glass
• Bezel: Black, near-flush
• Scale: U.S. And metric, with ISO symbols where appropriate
• Lighting: Perimeter and thru-dial lighting
• Voltage: 12 volts
• Material: Glass
• Item Dimensions: 8 x 8 x 8 inches
• Weight: 1.03 pounds
• Unit Count: 1
• UPC: 731957419989

Frequently Asked Questions

What speed range does the Sierra 57900P speedometer read? The Sierra 57900P Amega speedometer kit reads up to 65 MPH on a 3 inch black dial.

What size mounting hole does this speedometer need? A 3.43 inch mounting hole is required to install the Sierra 57900P Amega speedometer.

Does the 57900P speedometer show both mph and metric readings? Yes, the dial includes both U.S. And metric scales with ISO symbols where appropriate.

Is the 57900P speedometer illuminated for night use? It has both perimeter and thru-dial lighting, so the dial stays readable after dark.

What voltage does the Sierra 57900P speedometer run on? The 57900P operates on a 12 volt system, standard for most boats.

What is the lens made of on this speedometer? The 57900P uses a scratch resistant curved glass lens set in a black, near-flush bezel.

What color scheme does the Amega 57900P dial use? It has a black dial with red graduations, white numerals, and a vivid white pointer staff for high contrast readability.

What is included when I order the 57900P? The order includes one Amega 3 inch, 65 MPH speedometer gauge as a complete kit.

How big is the 57900P speedometer overall? The Sierra 57900P has overall item dimensions of 8 x 8 x 8 inches and weighs 1.03 pounds.

Is the Amega line a recent design or an established product? The Amega black-dial gauge line, which includes the 57900P, has been offered since 1986.

Can the 57900P be matched with other gauges for a full dash set? Yes, the 57900P Amega speedometer is designed to be paired with other Amega-series instruments for a matching dash layout.