Sierra 57898P Amega Domed Pitot Speedometer, 3 Inch Gauge, 0-50 MPH, Scratch Resistant Lens

The Sierra 57898P Amega speedometer is a pitot type gauge built for boaters who want a clear, accurate read on hull speed at the helm. It uses a domed, scratch resistant lens over a 3 inch gauge face, reading from 0 to 50 mph, and is constructed from glass and plastic for durability in a marine helm environment. As a pitot type speedometer, it works with a pitot tube pickup mounted on the transom or hull that senses water pressure created by boat speed and translates that pressure into a needle reading on the gauge face, giving a direct mechanical speed reading without relying on a paddlewheel sensor.

This gauge is sold as part of the Amega series from Sierra, a brand that has supplied engine and drive parts to the marine industry for decades, with products engineered to meet or exceed the equipment they are designed to work with. The 3 inch size and domed lens make it a straightforward panel-mount upgrade or replacement for boaters standardizing their helm gauges on a matching Amega set, and the scratch resistant lens helps the face stay legible after years of sun, spray, and cleaning.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 57898P
• Product Type: Pitot type speedometer
• Gauge Size: 3 inches
• Speed Range: 0 to 50 mph
• Lens: Domed, scratch resistant
• Material: Glass, plastic
• Item Dimensions: 8 x 8 x 4.38 inches
• Package Dimensions: 10.2 cm L x 17.3 cm W x 19.3 cm H
• Weight: 1 pound
• UPC: 731957420046
• GTIN: 00731957420046
• Country of Origin: United States
• Package Quantity: 1

Frequently Asked Questions

What type of speedometer is the Sierra 57898P? The Sierra 57898P Amega speedometer is a pitot type gauge, meaning it reads boat speed from water pressure sensed by a pitot tube pickup rather than a paddlewheel sensor.

What speed range does this gauge read? It reads from 0 to 50 mph on a 3 inch gauge face, part of the Sierra Amega series (part number 57898P).

How big is the 57898P gauge face? The gauge face measures 3 inches, a common panel-mount size for boat helm speedometers in the Amega lineup.

What is the lens made of and how durable is it? The 57898P uses a domed, scratch resistant lens over a glass and plastic gauge housing, designed to stay legible despite sun and spray exposure at the helm.

What are the overall dimensions of this speedometer? The Sierra 57898P measures 8 x 8 x 4.38 inches as an item, and ships in a package measuring 10.2 cm L x 17.3 cm W x 19.3 cm H.

How much does the 57898P speedometer weigh? This gauge weighs 1 pound.

Is a pitot tube included with the 57898P kit? The listing covers the Amega speedometer gauge itself (part number 57898P); it does not specify an included pitot tube pickup, so confirm your existing pitot tube setup is compatible before ordering.

What brand makes the 57898P speedometer? The 57898P is a Sierra product, sold under Sierra's Amega gauge series.

Is the Sierra 57898P a genuine Sierra part or aftermarket? Yes, part number 57898P is a genuine Sierra Amega speedometer, not a third-party aftermarket copy.

How many units come in the package? The Sierra 57898P ships as a single gauge, with a package quantity of 1.

Where is the 57898P speedometer manufactured? The Sierra 57898P is manufactured in the United States.

What is the UPC for the Sierra 57898P speedometer? The UPC for the Sierra 57898P Amega speedometer is 731957420046.