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Product DescriptionSierra 3" Amega tachometer/hour meter. Smart white and red graphics on a black dial background add a sharp, classic style to any dash. These very low profile bezels follow the curve of the lens to eliminate water trapping. Scratch-resistant domed glass lenses shed water. Through-dial and perimeter lighting provides excellent readability at night. Sierra Part #57897P.
• Dial Range: 0-6000 RPM
• Tachometer/Hourmeters (Electric): O/B & 4-Stroke Gas Engines
• Sender Code: O/B ALT./COIL
• Tachometer: Mariner 30 & 40 HP (2-cylinder) engines require a module (Mercury 17461A2)
• Operating Temperature: -40C to +70C
• Ingress Protection: IP65
• Bezel O.D.: 3.78"
• Housing O.D.: 3.39"
• Hole Size: 3.43"