---
product_id: 39693840
title: "Sierra 18-7234 Marine Flame Arrestor for Mercruiser Stern Drive"
brand: "sierra"
price: "€ 353.83"
currency: EUR
in_stock: true
reviews_count: 4
url: https://www.desertcart.fi/products/39693840-sierra-18-7234-marine-flame-arrestor-for-mercruiser-stern-drive
store_origin: FI
region: Finland
---

# 7" Outside Diameter precision fit Flame arrestor element 1.55" height Machined exterior for durability Sierra 18-7234 Marine Flame Arrestor for Mercruiser Stern Drive

**Brand:** sierra
**Price:** € 353.83
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay safe on the water with precision-engineered flame protection!

## Quick Answers

- **What is this?** Sierra 18-7234 Marine Flame Arrestor for Mercruiser Stern Drive by sierra
- **How much does it cost?** € 353.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/39693840-sierra-18-7234-marine-flame-arrestor-for-mercruiser-stern-drive)

## 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

- • **Lightweight Design:** At just 9.1 ounces, it adds minimal weight without compromising performance
- • **OEM Certified Quality:** Genuine Sierra part number 18-7234, compatible with Mercury Marine 805016A1 for trusted reliability
- • **Precision Engineered Fit:** 7-inch diameter ensures seamless integration with Mercruiser stern drives
- • **Durable Machined Exterior:** Robust construction designed to withstand marine environments and extend lifespan
- • **Optimized Flame Arrestor Element:** 1.55-inch height element maximizes safety by effectively preventing flame propagation

## Overview

The Sierra 18-7234 Marine Flame Arrestor is a high-quality, machined flame arrestor designed specifically for Mercruiser stern drives. Featuring a 7-inch outside diameter and a 1.55-inch flame arrestor element height, it offers reliable flame suppression while maintaining a lightweight profile of 9.1 ounces. This OEM-certified component ensures optimal safety and durability for marine engine applications.

## Description

Sierra 18-7234 Marine Flame Arrestor for Mercruiser Stern Drive

## Features

- Element : 1.55
- Height : 2.28
- Outside Diameter : 7" or 177.8mm
- Throat: 3.1
- Vent Tubes: 0

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Sierra |
| Brand | Sierra |
| Model | Sierra 18-7234 Flame Arrestor |
| Item Weight | 9.1 ounces |
| Product Dimensions | 9.49 x 2.48 x 9.02 inches |
| Item model number | 18-7234 |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | 187234 |
| OEM Part Number | MERCURY MARINE 805016A1 |
| Lift Type | MOTOR |

## Images

![Sierra 18-7234 Marine Flame Arrestor for Mercruiser Stern Drive - Image 1](https://m.media-amazon.com/images/I/41ffGkeChqL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Most excellent flame arrestor
*by J***H on April 23, 2022*

Metal rather the the fragile standard Mercruiser item

### ⭐⭐⭐⭐⭐ Fit and works
*by A***R on September 23, 2020*

Fit and is doing the job. Will most likely buy a second to match on my other engine.

### ⭐⭐⭐⭐⭐ Half inch taller than stock better airflow
*by S***P on August 5, 2020*

Half inch taller than my stock one better airflow good quality

## Frequently Bought Together

- Sierra 18-7234 Marine Flame Arrestor for Mercruiser Stern Drive
- Manifold Engine Block Drain Plug Kit Replaces Sierra 18-4226 for Mercruiser 22-806608a02 Compatible with GLM 13992 Pack of 5
- Quicksilver 802893Q01 Water Separating Fuel Filter for Mercury and Mariner Outboards and MerCruiser Stern Drive and Inboard Engines

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**Shop now:** [https://www.desertcart.fi/products/39693840-sierra-18-7234-marine-flame-arrestor-for-mercruiser-stern-drive](https://www.desertcart.fi/products/39693840-sierra-18-7234-marine-flame-arrestor-for-mercruiser-stern-drive)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-08*