---
product_id: 80610206
title: "MagnaFlow Performance Exhaust Muffler 12289 | Deep Signature Sound, 5x8x24\" Oval, Stainless Steel, 3\"/3\" Inlet/Outlet, Offset/Center"
brand: "magnaflow exhaust products"
price: "$472.06"
currency: USD
in_stock: true
reviews_count: 13
category: "Magna Flow Exhaust Products"
url: https://www.desertcart.us/products/80610206-magnaflow-performance-exhaust-muffler-12289-deep-signature-sound-5x8x24-oval
store_origin: US
region: United States of America
---

# Deep, signature MagnaFlow sound Dyno-proven power boost Stainless steel, rust-resistant durability MagnaFlow Performance Exhaust Muffler 12289 | Deep Signature Sound, 5x8x24" Oval, Stainless Steel, 3"/3" Inlet/Outlet, Offset/Center

**Brand:** magnaflow exhaust products
**Price:** $472.06
**Availability:** ✅ In Stock

## Summary

> 🔧 Turn heads and boost power with the exhaust that means business.

## Quick Answers

- **What is this?** MagnaFlow Performance Exhaust Muffler 12289 | Deep Signature Sound, 5x8x24" Oval, Stainless Steel, 3"/3" Inlet/Outlet, Offset/Center by magnaflow exhaust products
- **How much does it cost?** $472.06 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/80610206-magnaflow-performance-exhaust-muffler-12289-deep-signature-sound-5x8x24-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

- • **Smooth Operator:** Straight-through perforated core with two-stage acoustic packing ensures a refined, drone-minimized exhaust note.
- • **Built to Outlast:** Premium stainless steel construction resists rust and corrosion, backed by a limited lifetime warranty.
- • **Power Meets Precision:** Dyno-tested design optimizes exhaust flow, unlocking measurable horsepower and torque gains.
- • **Resonate with Authority:** Signature 5x8" oval body delivers that iconic deep MagnaFlow exhaust tone that commands attention.
- • **Custom Fit, Ultimate Flexibility:** Universal 3" inlet/outlet and reversible design allow tailored installation for your unique ride.

## Overview

The MagnaFlow Performance Exhaust Muffler 12289 features a 3" inlet/outlet and a 5x8" oval stainless steel body engineered for deep, smooth sound and improved engine performance. Its straight-through perforated core with acoustic packing optimizes exhaust flow, delivering dyno-proven power gains while minimizing drone. Designed for universal fitment and built in the USA, it offers durable rust resistance and is backed by a limited lifetime warranty, making it the go-to upgrade for enthusiasts seeking lasting quality and that unmistakable MagnaFlow growl.

## Description

Fully reversible and featuring a free-flowing, straight-through perforated stainless steel core, stainless mesh wraps our acoustic fiber fill to deliver a smooth, deep tone for your custom exhaust project.

Review: Durable, Great Tone, and Still Rust-Free After Plenty of Miles - I’ve been running this MagnaFlow muffler on my 2005 Jeep Grand Cherokee for a good while now, and it’s been rock-solid. No rust anywhere — even after wet roads and heat cycles. The stainless steel just picked up that light golden and blue tint from exhaust temps, which is totally normal. Welds and seams still look tight with zero corrosion. Sound-wise, it hits that sweet spot: deep and smooth without being obnoxious. Around town it’s mellow, but when you get on the throttle it’s got a clean growl that sounds legit — not like a coffee-can. It could use some drone control because on the highway there’s a little bit of drone around 2k RPM, so adding a small resonator near the tailpipe would probably make it perfect. If you’re after a muffler that lasts, has great flow, great performance, resists rust, and actually sounds like quality stainless steel instead of tin foil, this one’s a solid buy.
Review: 2016 f150 twin turbo v6, better turbo response, whistle, and sound - Had my local muffler guy install this for $120, and it was the right choice. Ford tuned these ecoboost engines to be super quiet and i wanted a little more exhaust sound to cover up the sound of moving metal parts, like a giant obnoxous prius. They tuned the turbo whistle super high so most people couldn't hear it, but i could and it was driving me crazy. This exhaust added a nice deep tone and lowered the turbo whistle into a less ear splitting range. It sounds very very good for a v6, nothing like a v8, but something all together different and unique. The long body design leads to no cabin drone and the strait through flow reduces back pressure and gives it a nice throaty turbo noise. There is a hint of tinnyness to the rattle some times but its very minimal and could be fixed with a tuned tip. I have been getting nods of approval from other F150 drivers since installing this muffler, and the minimal performance and mileage are just a bonus.

## Features

- SIGNATURE MAGNAFLOW SOUND - The 5" x 8" Oval body of muffler 12289 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 - 12289’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 | B000COWUJS |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #138,720 in Automotive ( See Top 100 in Automotive ) #32 in Automotive Performance Exhaust Mufflers #2,304 in Automotive Emission & Exhaust Products |
| Brand | MagnaFlow Exhaust Products |
| Brand Name | MagnaFlow Exhaust Products |
| Compatible with Vehicle Type | Car, Truck, Van |
| Configuration | Offset/Center |
| Customer Reviews | 4.7 out of 5 stars 91 Reviews |
| Global Trade Identification Number | 00841380001030 |
| Included Components | MagnaFlow 12289 Exhaust Muffler |
| Inlet Connection Size | 3 Inches |
| Item Dimensions | 30.75 x 9 x 5.5 inches |
| Item Type Name | MagnaFlow 12289 Exhaust Muffler |
| Item Weight | 1.2 Pounds |
| Item dimensions L x W x H | 30.75 x 9 x 5.5 inches |
| Manufacturer | MagnaFlow Exhaust Products |
| Manufacturer Part Number | 12289 |
| Manufacturer Warranty Description | Lifetime |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Model Number | 12289 |
| OEM Equivalent Part Number | 12289 |
| Outlet Connection Size | 3 Inches |
| Shape | Oval |
| UPC | 841380001030 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | Car, Truck, Van |

## Product Details

- **Brand:** MagnaFlow Exhaust Products
- **Configuration:** Offset/Center
- **Item Weight:** 1.2 Pounds
- **Material:** Stainless Steel
- **Vehicle Service Type:** Car, Truck, Van

## Images

![MagnaFlow Performance Exhaust Muffler 12289 | Deep Signature Sound, 5x8x24" Oval, Stainless Steel, 3"/3" Inlet/Outlet, Offset/Center - Image 1](https://m.media-amazon.com/images/I/51ZIKYdNz6L.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Durable, Great Tone, and Still Rust-Free After Plenty of Miles
*by R***O on October 23, 2025*

I’ve been running this MagnaFlow muffler on my 2005 Jeep Grand Cherokee for a good while now, and it’s been rock-solid. No rust anywhere — even after wet roads and heat cycles. The stainless steel just picked up that light golden and blue tint from exhaust temps, which is totally normal. Welds and seams still look tight with zero corrosion. Sound-wise, it hits that sweet spot: deep and smooth without being obnoxious. Around town it’s mellow, but when you get on the throttle it’s got a clean growl that sounds legit — not like a coffee-can. It could use some drone control because on the highway there’s a little bit of drone around 2k RPM, so adding a small resonator near the tailpipe would probably make it perfect. If you’re after a muffler that lasts, has great flow, great performance, resists rust, and actually sounds like quality stainless steel instead of tin foil, this one’s a solid buy.

### ⭐⭐⭐⭐⭐ 2016 f150 twin turbo v6, better turbo response, whistle, and sound
*by D***S on April 14, 2017*

Had my local muffler guy install this for $120, and it was the right choice. Ford tuned these ecoboost engines to be super quiet and i wanted a little more exhaust sound to cover up the sound of moving metal parts, like a giant obnoxous prius. They tuned the turbo whistle super high so most people couldn't hear it, but i could and it was driving me crazy. This exhaust added a nice deep tone and lowered the turbo whistle into a less ear splitting range. It sounds very very good for a v6, nothing like a v8, but something all together different and unique. The long body design leads to no cabin drone and the strait through flow reduces back pressure and gives it a nice throaty turbo noise. There is a hint of tinnyness to the rattle some times but its very minimal and could be fixed with a tuned tip. I have been getting nods of approval from other F150 drivers since installing this muffler, and the minimal performance and mileage are just a bonus.

### ⭐⭐⭐⭐⭐ This thing is QUIET
*by R***B on May 20, 2025*

Exactly what I was looking for on my cammed 5.3 chevy. Had a 18" magnaflow for years, but the cam swap made it super noisy sitting in city traffic & gassing it at all beyond 2.5k rpm. Simple diy install with flux core welder. Used 3" pipe, 3" i.d. adapter, band clamp for y pipe, cut pipe to attach a turndown. True off road exhaust that leaves room for bigger spare tire. Easy removal. Had to mock up the exhaust hangar & tack weld with muffler on jack stand

## Frequently Bought Together

- MagnaFlow Performance Exhaust Muffler 12289: 3"/3" Inlet/Outlet, 5x8x24" Oval, Stainless Steel, Satin Finish
- YOLANDO 3'' Mild Steel Custom Exhaust Kit Tubing Mandrel Bend Pipe Straight & U-Bend 16 Gauge Universal 8PCS

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-14*