Sierra 65129P Lido 3 Inch Tachometer/Hourmeter, 0-7000 RPM, for 4-Stroke Gas Outboard Engines

The Sierra 65129P is a 3 inch electric tachometer/hourmeter from the Lido-Signature Series, built for 4-stroke gas engines. It combines RPM monitoring across a 0-7000 RPM range with an integrated hourmeter, giving boat owners a single gauge to track both engine speed and accumulated running hours for maintenance scheduling. The gauge is designed for outboard, alloy applications using a coil-trigger signal, so it reads engine speed directly from the ignition coil rather than requiring a separate RPM sensor kit.

Sierra builds its gauges to meet or exceed the performance of the original equipment they replace, engineered to hold up in the marine environment while keeping pace with the demands of modern gas outboard engines. The 65129P is sized for standard 3 inch dash cutouts, making it a straightforward swap for boats already fitted with a 3 inch gauge opening.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 65129P
• Product Type: Tachometer/Hourmeter
• Gauge Diameter: 3 inches
• RPM Range: 0-7000 RPM
• Engine Compatibility: 4-Stroke Gas Engines
• Application: Outboard, Alloy
• Trigger Type: Coil
• Power Type: Electric
• Material: Alloy Steel
• Series: Lido-Signature Series
• Package Dimensions: 4.5 inches L x 8 inches H x 6 inches W
• Weight: 0.69 pounds

Frequently Asked Questions

What is the RPM range of the Sierra 65129P tachometer? The Sierra 65129P reads from 0 to 7000 RPM, which covers the operating range of the 4-stroke gas engines it is designed for.

Does the 65129P include an hourmeter? Yes, the 65129P is a combination tachometer/hourmeter, so it tracks both engine RPM and accumulated running hours on the same 3 inch gauge face.

What size gauge cutout does the Sierra 65129P require? It is a 3 inch gauge, so it fits standard 3 inch dash openings already used for gauges of this type.

What engines is the Sierra 65129P tachometer designed for? It is designed for 4-stroke gas engines, specifically outboard, alloy applications that use a coil-trigger RPM signal.

How does the 65129P get its RPM signal? The 65129P is a coil-trigger tachometer, meaning it reads engine speed from the ignition coil rather than needing a separate magnetic pickup or sensor.

What is the Lido-Signature Series? The Lido-Signature Series is the gauge line the Sierra 65129P belongs to, covering tachometers and hourmeters built to Sierra's marine gauge standards.

Is the Sierra 65129P an electric or mechanical tachometer? The 65129P is an electric tachometer/hourmeter, not a mechanically driven unit.

What material is the Sierra 65129P gauge made from? The 65129P is constructed with an alloy steel build, in keeping with Sierra's marine-grade gauge construction.

How much does the Sierra 65129P weigh? The Sierra 65129P weighs 0.69 pounds as packaged.

Is the Sierra 65129P genuine Sierra or an aftermarket copy? The 65129P is a genuine Sierra product from its Lido-Signature Series gauge line, not a generic aftermarket substitute.

Will the Sierra 65129P work on a diesel engine? No, the 65129P is built for 4-stroke gas engines; diesel applications require a different Sierra tachometer designed for diesel coil or magnetic pickup signals.