Sierra 68373P Tachometer, 3 Inch, 0-4000 RPM, Alternator Sender, White Bezel

The Sierra 68373P is a 3 inch tachometer built for boaters who want a clean, easy-to-read instrument that holds up to marine conditions. It uses a 0-4000 RPM scale and is designed for the Alternator sender code, making it a direct fit for engines using an alternator-based tach signal. The gauge features a stylish white bezel with black-on-white graphics for strong daytime contrast, and both through-dial and perimeter lighting so the face stays readable at night or in low light. The dial is protected by a domed glass lens that sheds water and resists scratching, holding up to spray, rain, and routine cleaning better than a flat plastic lens. Scales are marked in both U.S. And metric units, with ISO symbols included where appropriate, so the gauge reads correctly regardless of which system the helm is set up for. At 3 inches in diameter, the 68373P fits standard helm gauge cutouts common on runabouts, cruisers, and center consoles. Whether you are replacing a cracked, fogged, or non-functioning tachometer or building out a new helm panel, this gauge gives a consistent, factory-look appearance alongside other Sierra instruments.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 68373P
• Dial Size: 3 inches
• RPM Range: 0-4000 RPM
• Sender Code: Alternator
• Bezel Color: White
• Graphics: Black on white
• Lens: Domed glass, scratch resistant
• Lighting: Through-dial and perimeter lighting
• Scale Markings: U.S. And metric scales with ISO symbols where appropriate
• Material: Glass (lens)
• Weight: 0.75 pounds

Frequently Asked Questions

What RPM range does the Sierra 68373P tachometer cover? The Sierra 68373P reads from 0 to 4000 RPM, making it suited to engines whose operating range falls within that scale.

What size is this tachometer? The dial measures 3 inches, a common size for helm gauge cutouts on runabouts, cruisers, and center consoles.

What sender does the 68373P work with? This gauge is built for the Alternator sender code, so it is intended for engines that generate a tach signal from the alternator rather than other sender types.

Is the lens on the 68373P glass or plastic? The 68373P uses a domed glass lens rather than plastic, which sheds water and resists scratching better than a flat plastic cover.

Does the Sierra 68373P tachometer light up at night? Yes, the 68373P includes both through-dial and perimeter lighting so the face stays readable at night.

What color is the bezel and dial face on this gauge? The 68373P has a white bezel with black-on-white graphics for good daytime contrast.

Are the scales on the 68373P marked in metric units? Yes, the 68373P shows both U.S. And metric scales, with ISO symbols included where appropriate.

What is the weight of the Sierra 68373P tachometer? The Sierra 68373P weighs 0.75 pounds.

Can the 68373P replace a cracked or fogged tachometer at the helm? Yes, the 68373P is a 3 inch, 0-4000 RPM tachometer with an Alternator sender code, suited for replacing a damaged or non-functioning gauge of the same dial size and sender type.

Is the 68373P part of a matching gauge set? The 68373P shares its white bezel and black-on-white graphic styling, so it can be paired with other Sierra gauges finished the same way for a consistent helm panel look.