---
product_id: 1794844
title: "GLM Complete Water Pump KIT Part Number: 12120; Sierra Part Number: 18-3320; Mercury Part Number: 46-44292A4"
brand: "glm"
price: "€ 109.20"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.sk/products/1794844-glm-complete-water-pump-kit-part-number-12120-sierra-part
store_origin: SK
region: Slovakia
---

# Easy installation Boat compatibility Lightweight design GLM Complete Water Pump KIT Part Number: 12120; Sierra Part Number: 18-3320; Mercury Part Number: 46-44292A4

**Brand:** glm
**Price:** € 109.20
**Availability:** ✅ In Stock

## Summary

> 💧 Pump Up Your Performance!

## Quick Answers

- **What is this?** GLM Complete Water Pump KIT Part Number: 12120; Sierra Part Number: 18-3320; Mercury Part Number: 46-44292A4 by glm
- **How much does it cost?** € 109.20 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/1794844-glm-complete-water-pump-kit-part-number-12120-sierra-part)

## Best For

- glm enthusiasts

## Why This Product

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

## Key Features

- • **Light as a Feather:** Weighs only 0.95 pounds for effortless handling
- • **Durable Aluminum Build:** Crafted from high-quality aluminum for long-lasting performance
- • **Seamless Compatibility:** Designed specifically for Mercruiser MR / Alpha One (1984-1990)
- • **Hassle-Free Replacement:** Direct replacement for Sierra and Mercury part numbers
- • **Expert Installation Guidance:** Refer to manufacturer recommendations for a perfect fit

## Overview

The Complete Water Pump KIT (Part Number: 12120) is a lightweight, durable replacement sea water pump designed for Mercruiser MR / Alpha One models from 1984 to 1990. Made from high-quality aluminum, this pump ensures optimal performance and easy installation, making it the perfect choice for boat enthusiasts looking to maintain their vessels.

## Description

GLM Complete Water Pump KIT Part Number: 12120; Sierra Part Number: 18-3320; Mercury Part Number: 46-44292A4

## Features

- Replacement complete sea water pump
- Drive-mounted pump
- For use with Mercruiser
- MR / Alpha One (1984-1990)
- Refer to manufacturer recommendations for proper fit/installation information

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Compatible with Vehicle Type | Boat |
| Part Interchange Info | replacement |
| Weight Class | Lightweight |
| Item Weight | 0.95 Pounds |
| Material Type | Aluminum |

## Product Details

- **Brand:** GLM
- **Material:** Aluminum
- **Item Weight:** 0.95 Pounds
- **Vehicle Service Type:** Boat
- **Weight Class:** Lightweight
- **Manufacturer:** GLM
- **OEM Part Number:** GLM Part Number: 12120; Sierra Part Number: 18-3320; Mercury Part Number: 46-44292A4
- **UPC:** 754739121207

## Images

![GLM Complete Water Pump KIT Part Number: 12120; Sierra Part Number: 18-3320; Mercury Part Number: 46-44292A4 - Image 1](https://m.media-amazon.com/images/I/51xfZBI2NrL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    It is a complete replacement kit
  

*by B***L on Reviewed in the United States on June 15, 2021*

Installed easily, and solved my overheating at slow speeds.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Five Stars
  

*by B***E on Reviewed in the United States on January 11, 2018*

Thank you. Mercrusier 3.0 Liter sterndrive water pump kit

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Needs instructions or at least a diagram
  

*by D***Y on Reviewed in the United States on July 27, 2017*

It's exactly what you expect I would have given it 5 Stars except I would recommend them to put some instructions in with it. It comes with a full set of gaskets but not are all used mine was badly damaged so it makes it difficult to determine which gasket goes in one spot

## Frequently Bought Together

- GLM Complete Water Pump KIT Part Number: 12120; Sierra Part Number: 18-3320; Mercury Part Number: 46-44292A4
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**Shop now:** [https://www.desertcart.sk/products/1794844-glm-complete-water-pump-kit-part-number-12120-sierra-part](https://www.desertcart.sk/products/1794844-glm-complete-water-pump-kit-part-number-12120-sierra-part)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-03*