Sierra 57899P Amega Domed Pitot Type Speedometer, 3 Inch, 20-80 MPH

The Sierra 57899P Amega speedometer is a 3 inch pitot type speedometer kit built for boats using a pitot tube speed sensor. It reads boat speed across a 20-80 MPH range and features a domed, scratch resistant lens that protects the dial face from fogging, glare, and everyday wear at the helm. As part of Sierra's Amega gauge line, it is designed to give a clear, accurate speed readout while standing up to the vibration, sun exposure, and moisture common in a marine helm environment.

This kit uses a pitot tube for its speed input, meaning boat speed is measured directly from water pressure at the hull rather than through an engine sensor, making it a straightforward add or replacement for boats already set up with (or being fitted for) a pitot-type speed sensor. The domed face improves visibility and helps resist scratching compared to a flat lens, keeping the gauge legible over years of use.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 57899P
• Type: Speedometer, Pitot Type
• Face Style: Domed, Scratch Resistant
• Dial Size: 3 inches
• Speed Range: 20-80 MPH
• Sensor Type: Pitot Tube
• Item Dimensions: 8 x 8 x 8 inches
• Weight: 1.04 pounds
• UPC: 731957420244

Fitment

This is a universal pitot type speedometer kit and is not limited to a specific engine or boat model; it is intended for boats equipped with or being fitted for a pitot tube speed sensor.

Replaces (OEM)

No OEM cross-reference numbers are listed for this part.

Frequently Asked Questions

What speed range does the Sierra 57899P speedometer cover? The Sierra 57899P reads from 20 to 80 MPH, giving accurate speed tracking across typical recreational boating speeds.

What type of speed sensor does this gauge use? It is a pitot type speedometer, meaning it measures boat speed using a pitot tube that senses water pressure at the hull rather than reading off the engine.

What size is the 57899P speedometer dial? The dial is 3 inches, matching the standard 3 inch gauge cutout used across Sierra's Amega gauge line.

Does the 57899P have a scratch resistant face? Yes, the 57899P uses a domed, scratch resistant lens over the dial face to help maintain visibility and resist wear over time.

How much does the Sierra 57899P weigh? The Sierra 57899P weighs 1.04 pounds.

What are the boxed dimensions of this speedometer kit? The 57899P ships in an 8 x 8 x 8 inch package.

Is the 57899P a complete kit or just the gauge head? The 57899P is the full pitot type speedometer kit; a head-only version of the same gauge is sold under a separate part number for buyers who only need to replace the gauge head.

Will the 57899P work with any boat? The 57899P is a universal 3 inch pitot type speedometer intended for boats equipped with, or being fitted for, a pitot tube speed sensor, rather than being tied to one specific engine or boat model.

What brand makes the 57899P speedometer? The 57899P is manufactured by Sierra as part of its Amega gauge lineup.

Does the 57899P come with a warranty? Yes, the Sierra 57899P is covered under Sierra's customer satisfaction warranty, which covers defects in workmanship and materials for the useful life of the product.

What is the UPC for the Sierra 57899P? The UPC for the Sierra 57899P speedometer kit is 731957420244.