--- product_id: 1886100 title: "40 Series Chambered Muffler – 3.00\" Center In / 2.50\" Dual Out | Original 40 Series, aggressive sound, 16-gauge aluminized steel, for muscle cars, street rods, trucks, and SUVs (430402)" brand: "flowmaster" price: "$328.57" currency: USD in_stock: true reviews_count: 13 category: "Flowmaster" url: https://www.desertcart.us/products/1886100-40-series-chambered-muffler-3-00-center-in-2-50 store_origin: US region: United States of America --- # Legendary aggressive sound Two-chambered internal design 16-gauge aluminized steel durability 40 Series Chambered Muffler – 3.00" Center In / 2.50" Dual Out | Original 40 Series, aggressive sound, 16-gauge aluminized steel, for muscle cars, street rods, trucks, and SUVs (430402) **Brand:** flowmaster **Price:** $328.57 **Availability:** ✅ In Stock ## Summary > 🔥 Own the street with the legendary roar of Flowmaster! ## Quick Answers - **What is this?** 40 Series Chambered Muffler – 3.00" Center In / 2.50" Dual Out | Original 40 Series, aggressive sound, 16-gauge aluminized steel, for muscle cars, street rods, trucks, and SUVs (430402) by flowmaster - **How much does it cost?** $328.57 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/1886100-40-series-chambered-muffler-3-00-center-in-2-50) ## Best For - flowmaster enthusiasts ## Why This Product - Trusted flowmaster brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Unmistakable Bold Bark:** Command attention with Flowmaster’s signature aggressive exhaust tone that turns heads everywhere you go. - • **Boosted Performance Edge:** Enhances horsepower, torque, and throttle response by reducing back pressure—feel the power surge. - • **Built to Outlast the Road:** Crafted from rugged 16-gauge aluminized steel with MIG welding to resist heat, vibration, and wear—no packing to fail. - • **Precision Two-Chambered Design:** Engineered for optimal airflow and that iconic rumble, perfect for muscle cars, trucks, and custom builds. - • **Universal Fit, Effortless Install:** Versatile center-in/dual-out configuration fits a wide range of vehicles, making upgrade installs quick and hassle-free. ## Overview The Flowmaster 40 Series Chambered Muffler delivers the iconic aggressive exhaust sound beloved by enthusiasts, thanks to its proven two-chambered design. Built from durable 16-gauge aluminized steel with MIG welding, it boosts horsepower and torque by optimizing airflow and reducing back pressure. Its universal fitment and dual outlet configuration make it an easy upgrade for muscle cars, trucks, and custom vehicles seeking bold performance and unmistakable street presence. ## Description Buy Flowmaster 40 Series Chambered Muffler – 3.00" Center In / 2.50" Dual Out | Original 40 Series, aggressive sound, 16-gauge aluminized steel, for muscle cars, street rods, trucks, and SUVs (430402): Mufflers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Easy to install - Very easy to install yourself, trusted brand that sounds great! Review: Quality - Did the job, I'm very impressed how it sounds on my particular vehicle, I was worried about it sounding like a fart can but it definitely is far from that. I definitely recommend flowmaster if you like a nice deep rumble ## Features - LEGENDARY SOUND: This is the original Flowmaster muffler that enthusiasts know and love! Famous for its bold, aggressive bark and signature tone. It delivers the unmistakable attitude and street presence that made Flowmaster a legend. - TWO-CHAMBERED INTERNAL DESIGN: Flowmaster’s classic two-chambered layout delivers that bold, aggressive exhaust sound Flowmaster is known for. Perfect for muscle cars, street rods, trucks, off-road rigs, and custom builds. - PROVEN PERFORMANCE: Enhances airflow and reduces back pressure to help boost horsepower, torque, and throttle response. - BUILT TO LAST: Made from 16-gauge aluminized steel and fully MIG-welded to withstand high heat and vibration with no internal packing to blow out or wear down. - UNIVERSAL FITMENT: Designed for custom and modified exhaust systems, with multiple inlet/outlet sizes and configurations (center/offset, dual) for simplified installation and optimal fit. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000182DO2 | | Automotive Fit Type | Universal Fit | | Best Sellers Rank | #25,871 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Performance Exhaust Mufflers #281 in Automotive Emission & Exhaust Products | | Brand | Flowmaster | | Brand Name | Flowmaster | | Compatible with Vehicle Type | Car | | Configuration | Center/Dual | | Customer Reviews | 4.8 out of 5 stars 515 Reviews | | Global Trade Identification Number | 00700042010448, 00700042029464 | | Included Components | Flowmaster 430402 40 Series Muffler - 3.00 Center IN / 2.50 Dual OUT - Aggressive Sound | | Item Dimensions | 20 x 10 x 5 inches | | Item Type Name | Flowmaster 430402 40 Series Muffler - 3.00 Center IN / 2.50 Dual OUT - Aggressive Sound | | Item Weight | 10 pounds | | Item dimensions L x W x H | 20 x 10 x 5 inches | | Manufacturer | Flowmaster | | Manufacturer Part Number | 430402 | | Manufacturer Warranty Description | Check with the manufacturer | | Material | Alloy Steel | | Material Type | Alloy Steel | | Model Number | 430402 | | Number of Items | 1 | | OEM Equivalent Part Number | 430402 | | Part Interchange Info | 430402 | | Shape | Oval | | UPC | 700042010448 700042029464 | | Unit Count | 1 Count | | Vehicle Service Type | Car | ## Product Details - **Brand:** Flowmaster - **Item Weight:** 10 pounds - **Item dimensions L x W x H:** 20 x 10 x 5 inches - **Material:** Alloy Steel - **Vehicle Service Type:** Car ## Images ![40 Series Chambered Muffler – 3.00" Center In / 2.50" Dual Out | Original 40 Series, aggressive sound, 16-gauge aluminized steel, for muscle cars, street rods, trucks, and SUVs (430402) - Image 1](https://m.media-amazon.com/images/I/61fz3c5fOgL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy to install *by A***A on June 23, 2026* Very easy to install yourself, trusted brand that sounds great! ### ⭐⭐⭐⭐⭐ Quality *by J***N on April 27, 2026* Did the job, I'm very impressed how it sounds on my particular vehicle, I was worried about it sounding like a fart can but it definitely is far from that. I definitely recommend flowmaster if you like a nice deep rumble ### ⭐⭐⭐⭐⭐ Great product *by R***1 on December 11, 2025* Excellent product from a exceptional company, sounds amazing ## Frequently Bought Together - Flowmaster 430402 40 Series Chambered Muffler - scottchen PRO Exhaust Clamp With Hanger fit 3" Exhaust Pipe, Exhaust System Hanger Exhaust Hanger - EVIL ENERGY 3.0 Inch Exhaust Clamp,Butt Joint Band Clamp Sleeve Coupler Stainless Steel for Pipes,Mufflers,Catalytic Converters --- ## 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/1886100-40-series-chambered-muffler-3-00-center-in-2-50](https://www.desertcart.us/products/1886100-40-series-chambered-muffler-3-00-center-in-2-50) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-31*