---
product_id: 4272643
title: "Sierra 18-2945-9 Marine Drain Screw Gasket - Pack of 2"
brand: "sierra"
price: "€ 20.99"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/4272643-sierra-18-2945-9-marine-drain-screw-gasket-pack-2
store_origin: HR
region: Croatia
---

# Marine-grade stainless steel Pack of 2 3/8-16 fastener size Sierra 18-2945-9 Marine Drain Screw Gasket - Pack of 2

**Brand:** sierra
**Price:** € 20.99
**Availability:** ✅ In Stock

## Summary

> 🔩 Upgrade Your Marine Gear with Confidence!

## Quick Answers

- **What is this?** Sierra 18-2945-9 Marine Drain Screw Gasket - Pack of 2 by sierra
- **How much does it cost?** € 20.99 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/4272643-sierra-18-2945-9-marine-drain-screw-gasket-pack-2)

## Best For

- sierra enthusiasts

## Why This Product

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

## Key Features

- • **💧 Leak-Proof Design:** Ensures a secure fit to prevent any unwanted leaks.
- • **📏 Compact Dimensions:** Perfectly sized at 4 x 4 x 1 inches for versatile applications.
- • **⚙️ Easy Installation:** Quick and hassle-free setup for your lower units and sea water pumps.
- • **🌟 Durable Construction:** Crafted from high-grade stainless steel for long-lasting performance.
- • **🔧 Precision Engineering:** Designed for optimal compatibility with MerCruiser and Mercury/Mariner O/B's.

## Overview

The Sierra 18-2945-9 Marine Drain Screw Gasket is a reliable and durable solution for your boating needs. This pack of 2 features high-quality stainless steel construction, ensuring compatibility with most lower units and sea water pumps, specifically designed for 3/8-16 drain/fill screws found on MerCruiser and most Mercury/Mariner outboards. With a compact size and easy installation, it's the perfect addition to your marine maintenance toolkit.

## Description

The Sierra 18-2945-9 Drain Screw Gasket is used with the 3/8-16 drain/fill screw found on all Mercruiser and most Mercury/Mariner O/B's, along with most lower units and sea water pumps. It is interchangeable with the following: Chrysler/Force/US Marine F8186, F50556, F8077, 12-19183, Evinrude/Johnson 307552, Mallory 9-60101, 9-60102, Mercruiser 12-20260B, 12-19183B, 12-20260, 12-19183, 12-191832, 12-191833, Mercury 12-191833, 12-20260, 12-19183, 12-191832. Each drain screw gasket meets or exceeds the original part it replaces. Fit specific, check part numbers before purchase to ensure proper fit.

## Features

- Used in: most lower units and sea water pumps
- Used with: 3/8-16 drain/fill screw found on all MerCruiser and most Mercury/Mariner O/B's

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Stainless Steel |
| Washer Type | Fender |
| Exterior Finish | Stainless Steel |
| Fastener Size | 3/8-16 |
| Metal Type | Stainless Steel |
| Brand | Sierra |
| Item Weight | 4.54 g |
| Color | Original Version |
| Number of Pieces | 2 |
| Item dimensions L x W x H | 4 x 4 x 1 inches |
| Fastener Type | Drain Screw |
| Grade Rating | Stainless Steel |
| Compatible groove diameter | 0.38 Inches |
| UPC | 808282164324 |
| Manufacturer | Sierra |
| Global Trade Identification Number | 00808282164324 |
| Model | SR18.2945.9 |
| Item Weight | 0.16 ounces |
| Product Dimensions | 4 x 4 x 1 inches |
| Country of Origin | China |
| Item model number | 18-2945-9 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 18-2945-9 |
| OEM Part Number | 307552 |

## Product Details

- **Material:** Stainless Steel
- **Washer Type:** Fender
- **Exterior Finish:** Stainless Steel
- **Fastener Size:** 3/8-16
- **Metal Type:** Stainless Steel

## Images

![Sierra 18-2945-9 Marine Drain Screw Gasket - Pack of 2 - Image 1](https://m.media-amazon.com/images/I/51R7RP7PwJL.jpg)

## Frequently Bought Together

- Sierra 18-2945-9 Marine Drain Screw Gasket - Pack of 2
- Quicksilver 858064Q01 High Performance SAE 90 Gear Lube for Mercury Outboards and MerCruiser Sterndrives, 32 oz
- Slippery Pete - Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine Boat Outboard Motors (NOT COMPATIBLE WITH VOLVO PENTA)

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**Shop now:** [https://www.desertcart.hr/products/4272643-sierra-18-2945-9-marine-drain-screw-gasket-pack-2](https://www.desertcart.hr/products/4272643-sierra-18-2945-9-marine-drain-screw-gasket-pack-2)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-16*