---
product_id: 90435572
title: "Sierra International 18-3703 Prop Nut"
brand: "sierra"
price: "£17.72"
currency: GBP
in_stock: true
url: https://www.desertcart.co.uk/products/90435572-sierra-international-18-3703-prop-nut
store_origin: GB
region: United Kingdom
---

# Sierra International 18-3703 Prop Nut

**Brand:** sierra
**Price:** £17.72
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Sierra International 18-3703 Prop Nut by sierra
- **How much does it cost?** £17.72 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/90435572-sierra-international-18-3703-prop-nut)

## Best For

- sierra enthusiasts

## Why This Product

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

## Description

The Sierra 18-3703 Prop Nut is interchangeable with the following: Chrysler 11-88228, GLM 21242, Mallory 9-73963, Mercury 11-88228. Each Sierra product meets or exceeds the original equipment part it replaces.

## Features

- Sierra Prop Nut
- Meets or exceeds the original equipment quality
- Sierra part number: 18-3703
- Interchangeable with the following: Chrysler 11-88228, GLM 21242, Mallory 9-73963, Mercury 11-88228

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Aluminum |
| Fastener Type | Prop Nut |
| Thread Size | 3/8 inch |
| Exterior Finish | Machined |
| Color | silver |
| Metal Type | Alloy Steel, Stainless Steel |
| Brand | Sierra |
| Item Weight | 0.01 Kilograms |
| Thread Type | Unified National Coarse |
| Inside Thread Size | 3/8 inch - 16 UNC |
| Thread Style | Left Hand |
| Thread Coverage | Fully Threaded |
| Thread Class | Class 2B |
| Size | 3/8 inch |
| Item Diameter | 0.38 Inches |
| Number of Pieces | 1 |
| UPC | 808282111953 |
| Global Trade Identification Number | 00808282111953 |
| Manufacturer | Sierra |
| Model | Prop Nut |
| Item Weight | 0.352 ounces |
| Item model number | 18-3703 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 183703 |
| OEM Part Number | MERCURY MARINE 11-88228 |

## Product Details

- **Material:** Aluminum
- **Fastener Type:** Prop Nut
- **Thread Size:** 3/8 inch
- **Exterior Finish:** Machined
- **Color:** silver

## Images

![Sierra International 18-3703 Prop Nut - Image 1](https://m.media-amazon.com/images/I/41tlTBd-LCL.jpg)

---

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**Shop now:** [https://www.desertcart.co.uk/products/90435572-sierra-international-18-3703-prop-nut](https://www.desertcart.co.uk/products/90435572-sierra-international-18-3703-prop-nut)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-04*