---
product_id: 31001877
title: "Sierra International 68398P Tachometer"
brand: "seastar"
price: "₩274621"
currency: KRW
in_stock: true
reviews_count: 10
url: https://www.desertcart.kr/products/31001877-sierra-international-68398p-tachometer
store_origin: KR
region: South Korea
---

# Night readability 3" display U.S. & metric scales Sierra International 68398P Tachometer

**Brand:** seastar
**Price:** ₩274621
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate Your Performance with Precision!

## Quick Answers

- **What is this?** Sierra International 68398P Tachometer by seastar
- **How much does it cost?** ₩274621 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/31001877-sierra-international-68398p-tachometer)

## Best For

- seastar enthusiasts

## Why This Product

- Trusted seastar brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Design:** Crafted with a smooth exterior, built to withstand the rigors of marine environments.
- • **Lightweight & Compact:** Weighing only 9.2 ounces, it’s easy to install and won’t weigh down your dashboard.
- • **Precision at a Glance:** Experience unparalleled clarity with a 3-inch scratch-resistant domed glass lens.
- • **Versatile Measurement:** Equipped with both U.S. and metric scales, this tachometer adapts to your needs effortlessly.
- • **Illuminate Your Readings:** Perimeter lighting ensures you can read your tachometer even in the darkest conditions.

## Overview

The Sierra International 68398P Tachometer features a 3-inch scratch-resistant lens and perimeter lighting for optimal readability, offering both U.S. and metric scales. Designed for durability and ease of use, this lightweight tachometer is perfect for any marine enthusiast.

## Description

Sierra International 68398P Tachometer

## Features

- Sierra 68398P 3 inch
- Scratch-resistant domed glass lens
- Perimeter lighting for excellent readability at night
- U.S. and metric scales, with ISO symbols, where appropriate

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | SeaStar |
| Brand | Sierra International |
| Model | 3003.7379 |
| Item Weight | 9.2 ounces |
| Product Dimensions | 20 x 16.75 x 7 inches |
| Country of Origin | China |
| Item model number | 68398P |
| Exterior | Smooth |
| Manufacturer Part Number | 68398P |

## Images

![Sierra International 68398P Tachometer - Image 1](https://m.media-amazon.com/images/I/51p3c7Rc+HL.jpg)
![Sierra International 68398P Tachometer - Image 2](https://m.media-amazon.com/images/I/81vV1PnVYsL.jpg)
![Sierra International 68398P Tachometer - Image 3](https://m.media-amazon.com/images/I/81RCS2vQqjL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Attractive
  

*by D***E on Reviewed in the United States on October 12, 2022*

This was a replacement for the original tachometer on our 1987 Newport 27 sailboat that has a Universal M18 inboard diesel engine with an alternator. Very similar to the original. Had to calculate the crankshaft to alternator pulley size ratio (simple math) and determine the number of poles in the alternator (12 in my case) in order to select the correct setting on the back of the new tachometer. Don’t be concerned if the dial indicator on the front of the tach seems stuck on something other than zero out of the box. It zeros when power is applied after installation. Instructions are good.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Not Plug and Play with Yanmar 2GM20
  

*by G***  on Reviewed in the United States on May 29, 2023*

I bought this and returned it for a couple reasons. When it arrived in a shipping bag (not a box with protective foam) it was bouncing around in the bag and had come out of the original fold-and-snap shut style packaging. It looked like a nice tach though however my Yanmar 2GM20 has a plug and the leads are not exposed on the back. You likely can get this to work if you troubleshoot the wiring and use butt connectors but I decided to get the OEM tach even though it was $220 more. It cost me ~$320 for a brand new complete engine panel that has the OEM Yanmar tach.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    works just like original
  

*by F***N on Reviewed in the United States on September 5, 2019*

This tach is attractive, fits easily and is a spitting image for the original unit I am replacing, other than the handsome black finish that looks great with the other gauges on my Catalina 30 Mk II sailboat.  Time will tell how reliable it is but the first month is good.  I would take a chance on this unit.

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**Shop now:** [https://www.desertcart.kr/products/31001877-sierra-international-68398p-tachometer](https://www.desertcart.kr/products/31001877-sierra-international-68398p-tachometer)

---

*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-11*