--- product_id: 14723824 title: "MagnaFlow Performance Exhaust Muffler 12249 | Deep Signature Sound, 5x8x18\" Oval, Stainless Steel, 3\"/3\" Inlet/Outlet, Center/Center" brand: "magnaflow exhaust products" price: "£217.27" currency: GBP in_stock: true reviews_count: 13 category: "Magna Flow Exhaust Products" url: https://www.desertcart.co.uk/products/14723824-magnaflow-performance-exhaust-muffler-12249-deep-signature-sound-5x8x18-oval store_origin: GB region: United Kingdom --- # Signature deep 5x8" oval sound Dyno-proven power boost Universal fit, custom install MagnaFlow Performance Exhaust Muffler 12249 | Deep Signature Sound, 5x8x18" Oval, Stainless Steel, 3"/3" Inlet/Outlet, Center/Center **Brand:** magnaflow exhaust products **Price:** £217.27 **Availability:** ✅ In Stock ## Summary > 🔊 Own the road with the deep growl that means business. ## Quick Answers - **What is this?** MagnaFlow Performance Exhaust Muffler 12249 | Deep Signature Sound, 5x8x18" Oval, Stainless Steel, 3"/3" Inlet/Outlet, Center/Center by magnaflow exhaust products - **How much does it cost?** £217.27 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/14723824-magnaflow-performance-exhaust-muffler-12249-deep-signature-sound-5x8x18-oval) ## Best For - magnaflow exhaust products enthusiasts ## Why This Product - Trusted magnaflow exhaust products brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Endure:** Crafted from premium stainless steel with a limited lifetime warranty—performance that lasts as long as your drive. - • **Subtle Yet Bold:** Aggressive when you want it, quiet when you don’t—perfect balance for the professional who values presence without the headache. - • **Power Meets Precision:** Dyno-tested to optimize exhaust flow, unlocking measurable horsepower gains and enhanced engine efficiency. - • **Tailored for Your Ride:** Universal 3" inlet/outlet and oval design allow flexible placement and seamless integration with your vehicle’s exhaust system. - • **Resonate with Authority:** Experience MagnaFlow’s iconic deep, smooth V8 rumble that commands respect without the noise pollution. ## Overview The MagnaFlow Performance Exhaust Muffler 12249 features a 5" x 8" oval stainless steel body engineered for a signature deep exhaust tone. Dyno-proven to improve engine power by optimizing exhaust flow, it offers universal 3" inlet/outlet fitment for versatile installation. Designed with a straight-through perforated core and two-stage acoustic packing, it balances aggressive sound with quiet cruising. Backed by a limited lifetime warranty, this muffler delivers durable, high-performance exhaust enhancement tailored for cars, trucks, and vans. ## Description Buy MagnaFlow Performance Exhaust Muffler 12249 | Deep Signature Sound, 5x8x18" Oval, Stainless Steel, 3"/3" Inlet/Outlet, Center/Center: Mufflers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: The best 5.0 F-150 muffler for a respectable, confident V8 rumble - The PERFECT aftermarket muffler for the 5.0 f-150. After much research, and watching many YouTube videos of 5.0 f-150’s with this muffler, I decided to pull the trigger. The muffler arrived faster than expected, and I had a local muffler shop weld it on my truck in 40 minutes for less than $60.00. As for the sound, it couldn’t be a more perfect tone for me. There is a nice low rumble at all times, and it sounds aggressive when you lay into the gas, but it’s quiet at highway cruising speeds and during light acceleration. I’ve always loved the deep rumble of a V8, and this muffler lets that motor sing without pissing off my wife or being obnoxious in public. If you’re hoping to look tough by having the loudest and most obnoxiously truck and be that guy that everyone loves to hate, this isn’t your muffler. If you’re looking for a muffler that’s a very respectable step up from your stock muffler, and you love the low rumble of a powerful V8 without alerting the neighborhood to your presence, this muffler is absolutely perfect. Review: F150 5.0 - Love the sound on my 2016 F150 5.0. Kept the stock exhaust just had a shop cut out the muffler and weld this on. All they needed was a 2.5 to 3 inch adapter and some extra pipe to make up for the shorter muffler. Sounds great but not over the top! ## Features - SIGNATURE MAGNAFLOW SOUND - The 5" x 8" Oval body of muffler 12249 is engineered to deliver the deep, resonating sound that MagnaFlow mufflers are famous for. - DYNO-PROVEN PERFORMANCE - Extensive dyno testing is used to ensure that this 5" x 8" Oval muffler increases engine power and performance by improving the flow dynamics and evacuation of exhaust gases. - OPTIMAL ARCHITECTURE & CONSTRUCTION - The internal architecture of this muffler features a straight-through perforated core with two-stage acoustic packing which maintains the velocity of exhaust flow while generating a smooth, deep exhaust tone. Proudly made in the USA. - UNIVERSAL FITMENT - 12249’s universal design enables custom muffler placement and orientation to meet the particular spacing and mechanical requirements of your vehicle. Professional installation is highly recommended. - LIMITED LIFETIME CONSTRUCTION WARRANTY - Performance that lasts. Enjoy worry-free ownership knowing that you're backed by MagnaFlow’s limited lifetime construction warranty. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000COTCRG | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #179,370 in Automotive ( See Top 100 in Automotive ) #51 in Automotive Performance Exhaust Mufflers #3,252 in Automotive Emission & Exhaust Products | | Brand | MagnaFlow Exhaust Products | | Brand Name | MagnaFlow Exhaust Products | | Compatible with Vehicle Type | Car, Truck, Van | | Configuration | Center/Center | | Customer Reviews | 4.7 out of 5 stars 181 Reviews | | Global Trade Identification Number | 00841380000866 | | Included Components | MagnaFlow 12249 Exhaust Muffler | | Inlet Connection Size | 3 inches | | Item Type Name | MagnaFlow 12249 Exhaust Muffler | | Item Weight | 12.5 pounds | | Manufacturer | MagnaFlow Exhaust Products | | Manufacturer Part Number | 12249 | | Manufacturer Warranty Description | Lifetime Parts Only | | Material | Stainless Steel | | Material Type | Stainless Steel | | Model Number | 12249 | | Number of Items | 1 | | OEM Equivalent Part Number | 12249 | | Outlet Connection Size | 3 inches | | Shape | Oval | | UPC | 841380000866 | | Unit Count | 1 Count | | Vehicle Service Type | Car, Truck, Van | ## Product Details - **Brand:** MagnaFlow Exhaust Products - **Configuration:** Center/Center - **Item Weight:** 12.5 pounds - **Material:** Stainless Steel - **Vehicle Service Type:** Car, Truck, Van ## Images ![MagnaFlow Performance Exhaust Muffler 12249 | Deep Signature Sound, 5x8x18" Oval, Stainless Steel, 3"/3" Inlet/Outlet, Center/Center - Image 1](https://m.media-amazon.com/images/I/51xDXlS2uTL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ The best 5.0 F-150 muffler for a respectable, confident V8 rumble *by A***. on February 19, 2020* The PERFECT aftermarket muffler for the 5.0 f-150. After much research, and watching many YouTube videos of 5.0 f-150’s with this muffler, I decided to pull the trigger. The muffler arrived faster than expected, and I had a local muffler shop weld it on my truck in 40 minutes for less than $60.00. As for the sound, it couldn’t be a more perfect tone for me. There is a nice low rumble at all times, and it sounds aggressive when you lay into the gas, but it’s quiet at highway cruising speeds and during light acceleration. I’ve always loved the deep rumble of a V8, and this muffler lets that motor sing without pissing off my wife or being obnoxious in public. If you’re hoping to look tough by having the loudest and most obnoxiously truck and be that guy that everyone loves to hate, this isn’t your muffler. If you’re looking for a muffler that’s a very respectable step up from your stock muffler, and you love the low rumble of a powerful V8 without alerting the neighborhood to your presence, this muffler is absolutely perfect. ### ⭐⭐⭐⭐⭐ F150 5.0 *by S***M on March 11, 2026* Love the sound on my 2016 F150 5.0. Kept the stock exhaust just had a shop cut out the muffler and weld this on. All they needed was a 2.5 to 3 inch adapter and some extra pipe to make up for the shorter muffler. Sounds great but not over the top! ### ⭐⭐⭐⭐⭐ Looks great *by M***4 on January 3, 2026* Not too loud and would say it’s perfect for someone that wants the noise but has close neighbors they don’t want to wake up. Drone isn’t horrible either ## Frequently Bought Together - MagnaFlow Performance Exhaust Muffler 12249: 3"/3" Inlet/Outlet, 5x8x18" Oval, Stainless Steel, Satin Finish - EVIL ENERGY 3'' Exhaust Clamp,Lap Joint Band Clamp Stainless Steel for Pipes,Mufflers,Catalytic Converters (2PCS, 3.0 inch) - EVIL ENERGY 3.0 Inch Exhaust Clamp,Butt Joint Band Clamp Sleeve Coupler Stainless Steel for Pipes,Mufflers,Catalytic Converters 2PCs --- ## 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.co.uk/products/14723824-magnaflow-performance-exhaust-muffler-12249-deep-signature-sound-5x8x18-oval](https://www.desertcart.co.uk/products/14723824-magnaflow-performance-exhaust-muffler-12249-deep-signature-sound-5x8x18-oval) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-09-02*