Description
Overview
The Flowmaster 50 Series Big Block Chambered Muffler is engineered for drivers who demand serious sound control without sacrificing performance. Built for more than just big cubic inch engine applications, its large case size houses an internal tuning chamber that delivers mileage and power gains while keeping cabin noise to a minimum. If you’re looking for a mild, quiet interior tone that stays refined even under heavy loads, the 50 Series Big Block is purpose-built for the job.
Built for Heavy-Duty Work
This muffler is well suited to full-size trucks, SUVs, RVs, and tow vehicles — the kind of heavy-duty rigs that spend their days hauling, towing, and working hard. The 50 Series Big Block’s chambered design provides maximum sound control so you get a mild, comfortable tone inside the cab, even when the engine is under strain. It’s the ideal choice for owners who want the benefits of a performance exhaust muffler without an aggressive drone on long highway pulls.
Construction & Durability
Flowmaster constructs the 50 Series Big Block from 16 gauge aluminized steel and finishes it in a high-temperature paint to help it stand up to the elements. Every unit is fully MIG welded for maximum durability, making it ready for the demands of daily driving, towing, and heavy loads. This is a muffler designed to last through the tough working life of a truck or SUV.
Fitment & Configuration
This is a universal-fit muffler featuring a 3.00-inch inlet diameter with a dual inlet location, giving you flexibility across a wide range of heavy-duty exhaust setups. It carries an Emission Code of 5. Because it’s a universal design, it mounts using new hangers (not included), and exhaust tips are sold separately — so you can build the exact configuration your vehicle needs. Confirm your inlet requirements and plan your hangers and tips to complete the installation.
- Muffler Series: 50 Series Big Block
- Internal tuning chamber for mileage and power gains with maximum sound control
- Mild, quiet interior tone — stays refined even under heavy loads
- 16 gauge aluminized steel construction, fully MIG welded
- High-temperature paint finish
- Universal fitment with 3.00-inch dual inlet
- Uses new hangers (not included); exhaust tips sold separately
Whether you drive a full-size truck, tow regularly, or command an SUV or RV, the Flowmaster 50 Series Big Block Chambered Muffler brings proven Flowmaster chambered technology to your heavy-duty exhaust for a quieter, more comfortable ride with real performance benefits.







