Sierra 68374P Tachometer 3 Inch, 0-7000 RPM, Arctic White, O/B ALT./COIL Sender

The Sierra 68374P is a 3 inch Arctic-style tachometer built for gasoline-powered outboards, stern drives, and inboards. It displays a 0-7000 RPM range with a sender code of O/B ALT./COIL, matching it to outboard alternator/coil-based tach signal wiring. The gauge face uses a white bezel with black on white graphics for high-contrast readability, and both U.S. And metric scales are printed on the dial, with ISO symbols where appropriate, so it reads clearly for a wide range of boaters.

The dial is covered by a scratch-resistant domed glass lens that sheds water and resists scratching in a marine environment. Lighting is both through-dial and around the perimeter of the gauge, which keeps the face legible at night without washing out the numbers. At 3 x 5 x 5 inches and 0.75 pounds, the 68374P is sized to fit standard 3 inch instrument panel cutouts alongside matching Sierra Arctic-series gauges.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 68374P
• Item Type: Tach 7K, Arctic 3 inch
• Dial Range: 0-7000 RPM
• Sender Code: O/B ALT./COIL
• Dial Size: 3 inches
• Item Dimensions: 3 x 5 x 5 inches
• Weight: 0.75 pounds
• Lens Material: Glass
• Bezel Color: White
• Graphics: Black on white
• Lens Type: Scratch-resistant domed glass
• Illumination: Through-dial and perimeter lighting
• Scale: U.S. And metric, with ISO symbols where appropriate
• UPC: 808282267018

Fitment

• Suited for most gasoline-powered outboards, stern drives, and inboards using an O/B ALT./COIL tachometer sender signal.

Frequently Asked Questions

What RPM range does the Sierra 68374P tachometer cover? The Sierra 68374P has a dial range of 0-7000 RPM, printed with both U.S. And metric scales and ISO symbols where appropriate.

What size is the 68374P gauge? This tachometer has a 3 inch dial and overall item dimensions of 3 x 5 x 5 inches, sized for standard 3 inch instrument panel cutouts.

What sender does the 68374P work with? The 68374P is coded for an O/B ALT./COIL sender, meaning it reads tach signal from an outboard alternator or coil source.

Will this tachometer work on a stern drive or inboard engine? Yes, the Sierra 68374P is built for most gasoline-powered outboards, stern drives, and inboards, not outboards alone.

What is the lens made of on the 68374P? A scratch-resistant domed glass lens covers the dial face, which sheds water and resists scratching in marine use.

Is the 68374P lit for nighttime use? Yes, the gauge has both through-dial and perimeter illumination, which keeps the RPM numbers readable at night.

How much does the Sierra 68374P weigh? The 68374P weighs 0.75 pounds.

What color is the bezel and dial graphics on the 68374P? The 68374P has a white bezel with black on white dial graphics for high-contrast readability.

Does the 68374P show metric readings as well as RPM? The dial includes both U.S. And metric scales, with ISO symbols where appropriate, in addition to its 0-7000 RPM range.

Is the 68374P sold as a single gauge? Yes, the Sierra 68374P is an individual 3 inch tachometer with its own part number, UPC, and sender code.