Flowmaster 842515

Flowmaster Super 10 Series Muffler (Model 842515) Instruction Manual

Model: 842515 | Brand: Flowmaster

1. Product Overview

The Flowmaster Super 10 Series Muffler, Model 842515, is engineered for vehicles requiring an aggressive exhaust tone. This single-chambered muffler features a 2.50-inch center inlet and a 2.50-inch center outlet, designed to enhance exhaust velocity and reduce back pressure for improved horsepower, torque, and throttle response.

It is constructed from durable 409 stainless steel and is fully MIG-welded to withstand demanding automotive conditions. The compact design allows for versatile installation in various custom and modified exhaust setups.

Flowmaster Super 10 Series Single Chambered Muffler, Part #842515, 2.50 inch Center In / 2.50 inch Center Out

Image 1: Flowmaster Super 10 Series Muffler, highlighting its part number and inlet/outlet dimensions.

2. What's in the Box

The package for the Flowmaster Super 10 Series Muffler (Model 842515) includes:

  • One (1) Flowmaster 842515 Super 10 Muffler 409S - 2.50 Center IN / 2.50 Center OUT

3. Installation Guidelines

Professional installation is recommended for this product. Ensure the vehicle is safely secured on a lift or jack stands before beginning work. Always wear appropriate personal protective equipment, including safety glasses and gloves.

  1. Preparation: Allow the vehicle's exhaust system to cool completely. Identify the section of the existing exhaust system where the new muffler will be installed.
  2. Removal of Old Muffler: Carefully cut or unbolt the existing muffler from the exhaust system. Ensure all hangers and clamps are removed.
  3. Fitment Check: Position the Flowmaster Super 10 muffler in the desired location. Verify that the 2.50-inch center inlet and outlet align correctly with the existing or new exhaust piping. The muffler features reversible flow paths for maximum versatility.
  4. Securing the Muffler: Use appropriate exhaust clamps or weld the muffler into place. Ensure all connections are secure and leak-free.
  5. Final Inspection: After installation, start the vehicle and check for any exhaust leaks. Listen for proper sound and ensure there is adequate clearance from other vehicle components.
Flowmaster Super 10 Series Muffler installed under a vehicle, demonstrating universal fitment.

Image 2: An installed Flowmaster Super 10 Series Muffler, showcasing its compact size and universal fitment.

4. Operating Characteristics

The Flowmaster Super 10 Series Muffler is designed to produce an aggressive exterior sound level with moderate interior resonance. This is Flowmaster's loudest and most aggressive chambered muffler, ideal for enthusiasts seeking a pronounced exhaust note.

Flowmaster Super 10 Series Muffler with a sound level comparison chart, indicating aggressive exterior sound and moderate interior resonance.

Image 3: Sound level comparison chart for Flowmaster mufflers, positioning the Super 10 Series as aggressive.

The patented Delta Flow Technology within the muffler increases exhaust velocity and reduces back pressure, contributing to enhanced engine performance.

Cutaway view of a Flowmaster muffler, showing the internal Delta Flow Technology chambered design.

Image 4: Internal view of a Flowmaster muffler, illustrating the Delta Flow Technology.

5. Maintenance

The Flowmaster Super 10 Series Muffler requires minimal maintenance. Regular inspection of the exhaust system is recommended to ensure optimal performance and longevity.

  • Visual Inspection: Periodically check the muffler and surrounding exhaust components for any signs of damage, corrosion, loose connections, or leaks.
  • Cleaning: Clean the exterior of the muffler as needed to remove dirt and road grime. Use mild soap and water, avoiding harsh chemicals that could damage the finish.
  • Connection Integrity: Ensure all clamps and welds remain secure. Tighten any loose clamps or consult a professional for weld repairs if necessary.

6. Troubleshooting

IssuePossible CauseSolution
Excessive Noise/RattlingLoose connections, damaged hangers, internal muffler damage.Inspect all connections and hangers. Tighten loose clamps. If internal damage is suspected, professional inspection is advised.
Exhaust LeakImproperly sealed connections, cracked welds.Check all joints and welds. Re-tighten clamps or seek professional welding repair.
Reduced PerformanceObstruction in exhaust path, incorrect installation.Verify correct installation and ensure no blockages are present. Consult a professional if issues persist.

7. Specifications

FeatureDetail
BrandFlowmaster
Model Number842515
Material409 Stainless Steel
Inlet/Outlet Configuration2.50" Center In / 2.50" Center Out
Item Dimensions (L x W x H)14.5 x 10 x 4.5 inches
Item Weight6.1 pounds
Sound LevelAggressive
Fitment TypeUniversal Fit
Diagram showing the dimensions of the Flowmaster Super 10 Series Muffler: 6.5 inches length, 9.5 inches width, 4.0 inches height.

Image 5: Dimensional diagram of the Flowmaster Super 10 Series Muffler.

8. Official Product Video

Video 1: Flowmaster Lifestyle Video. This video provides an overview of Flowmaster products and their manufacturing process.

9. Warranty and Support

This Flowmaster product comes with a 10 Year Limited Warranty from the manufacturer. For specific details regarding warranty coverage, claims, or technical support, please refer to the official Flowmaster website or contact their customer service directly.

For returns, please adhere to the retailer's return policy, which typically allows for refunds or replacements within 30 days of purchase.

Ask a question about this manual

Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.

After a successful submission, we securely hash the supplied account or form email before sending it to Microsoft Advertising for conversion attribution. Privacy details.