--- product_id: 39693823 title: "720-11 Aluminum Marine Flame Arrestor - 350-600 recommended CFM" brand: "holley" price: "$284.72" currency: USD in_stock: true reviews_count: 3 category: "Holley" url: https://www.desertcart.us/products/39693823-720-11-aluminum-marine-flame-arrestor-350-600-recommended-cfm store_origin: US region: United States of America --- # Compact 5 3/4" size fits marine engines 350-600 CFM airflow capacity Precision-engineered Holley quality 720-11 Aluminum Marine Flame Arrestor - 350-600 recommended CFM **Brand:** holley **Price:** $284.72 **Availability:** ✅ In Stock ## Summary > 🔥 Dominate your marine engine airflow with Holley precision! ## Quick Answers - **What is this?** 720-11 Aluminum Marine Flame Arrestor - 350-600 recommended CFM by holley - **How much does it cost?** $284.72 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/39693823-720-11-aluminum-marine-flame-arrestor-350-600-recommended-cfm) ## Best For - holley enthusiasts ## Why This Product - Trusted holley brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Perfect Marine Fit:** Specifically designed to fit popular MerCruiser and marine fuel-injected engines - • **Durable & Lightweight:** Constructed with high-quality plastic for corrosion resistance and easy handling - • **Optimal Airflow Control:** 350-600 CFM rating ensures peak engine breathing without compromise - • **Race-Proven Performance:** Trusted by NASCAR & NHRA champions for unmatched reliability - • **Easy Installation & Maintenance:** Compact design with included Holley stickers for that authentic pro look ## Overview The Holley 720-11 Aluminum Marine Flame Arrestor delivers 350-600 CFM airflow capacity in a compact 5 3/4" size, engineered with Holley's century-long expertise. Designed for marine fuel-injected engines like MerCruiser 4.3L V6, it prevents flame hazards while optimizing engine performance. Lightweight, durable, and easy to install, this flame arrestor is a must-have for serious boaters who demand race-proven quality and reliability. ## Description Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy Nascar Cup team and nearly every NHRA Pro–Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies we can give you the edge you need over the competition! Review: Fit my Mercruiser 4.3 v-6 - It’s pretty basic looking, but it does what it’s supposed to do. It fit perfectly on my fuel injected MerCruiser for v-6 4.3 liter in my Crownline boat. Came packaged well and came with two Holly stickers. Review: it works.. - no more burnt air filters this thing does what its supposed to do.. awesome prodcut and it fit inside my scoop ## Features - Genuine Holley Quality Parts ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000E0ECGO | | Best Sellers Rank | #883,701 in Automotive ( See Top 100 in Automotive ) #31 in Powersports Exhaust Spark Arrestors | | Brand Name | Holley | | Color | No Color | | Customer Reviews | 4.5 4.5 out of 5 stars (24) | | Date First Available | December 2, 2005 | | Included Components | Holley 720-11 Flame Arrestor | | Item Dimensions LxWxH | 6.75 x 6.75 x 10.5 inches | | Item Package Dimensions L x W x H | 6.9 x 6 x 4 inches | | Item Weight | 0.55 Pounds | | Manufacturer | Holley | | Material | Plastic | | Model Name | Holley 720-11 Flame Arrestor | | Number of Items | 1 | | Package Weight | 0.55 Pounds | | Part Number | 72011 | | Size | 5 3/4" | | Suggested Users | unisex-adult | | Warranty Description | Warranty | ## Images ![720-11 Aluminum Marine Flame Arrestor - 350-600 recommended CFM - Image 1](https://m.media-amazon.com/images/I/71MrBgkPITL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fit my Mercruiser 4.3 v-6 *by J***N on July 2, 2022* It’s pretty basic looking, but it does what it’s supposed to do. It fit perfectly on my fuel injected MerCruiser for v-6 4.3 liter in my Crownline boat. Came packaged well and came with two Holly stickers. ### ⭐⭐⭐⭐⭐ it works.. *by M***D on September 12, 2013* no more burnt air filters this thing does what its supposed to do.. awesome prodcut and it fit inside my scoop ### ⭐⭐⭐⭐⭐ Five Stars *by K***E on August 1, 2017* as expected. ## Frequently Bought Together - Holley 720-11 Aluminum Marine Flame Arrestor - 350-600 recommended CFM - Spectre Performance 42133 Air Cleaner Stud Kit --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/39693823-720-11-aluminum-marine-flame-arrestor-350-600-recommended-cfm](https://www.desertcart.us/products/39693823-720-11-aluminum-marine-flame-arrestor-350-600-recommended-cfm) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-10*