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Quiet the Clatter Without Losing the Torque
The CORSA 8004000 Duramax Diesel Muffler is a direct-fit replacement muffler engineered for 6.2L Duramax diesel powered GM trucks and vans. MPN 8004000 uses a straight-through design to reduce diesel clatter while maintaining exhaust flow, making it a reliable upgrade for the factory muffler on a wide range of Chevrolet and GMC platforms.
Key Features
- Direct-fit replacement muffler, MPN 8004000
- Straight-through, mandrel-bent internal design
- Reduces diesel clatter without sacrificing exhaust flow
- Aluminized steel construction for corrosion resistance
- Bolts in using factory-style connections
- Compatible with a wide range of 6.2L Duramax diesel GM trucks and vans
- Manufactured in Berea, Ohio
Specifications
| Detail | Value |
|---|---|
| MPN | 8004000 |
| Engine Application | 6.2L Duramax Diesel |
| Design | Straight-through muffler |
| Material | Aluminized steel |
| Prop 65 | Yes |
What's Included
- CORSA 8004000 muffler
- Installation hardware where applicable
- Installation instructions
About CORSA Performance
CORSA Performance has manufactured exhaust components from its Berea, Ohio facility since 1990, applying the same acoustic engineering used in its performance systems to diesel truck replacement mufflers.
Related Parts on Our Site
- Corsa Dodge Diesel 5.9L Muffler
Frequently Asked Questions
What is the 8004000?The CORSA 8004000 is a direct-fit replacement muffler for 6.2L Duramax diesel GM trucks and vans.
Will the 8004000 reduce diesel clatter?Yes, its straight-through design is engineered to quiet diesel clatter while preserving exhaust flow.
What material is the 8004000 made from?The muffler is constructed from aluminized steel for corrosion resistance.
Does the 8004000 require welding to install?No, it is designed for a direct, bolt-in style installation using factory-style connections.
Is the 8004000 compatible with both trucks and vans?Yes, it fits a wide range of GM 6.2L Duramax diesel trucks and vans across multiple model years.
Where is the 8004000 manufactured?CORSA manufactures the 8004000 in Berea, Ohio.
Will the 8004000 affect fuel economy?The straight-through design maintains factory flow characteristics, so no negative impact on fuel economy is expected.
Does the 8004000 include installation hardware?Yes, applicable mounting hardware is included with the muffler.
Installation Instructions
- Raise and safely support the vehicle, allowing the exhaust to cool completely.
- Locate and remove the factory muffler from the exhaust system.
- Position the CORSA 8004000 muffler in place and loosely secure with clamps.
- Align the muffler with factory hangers to ensure proper clearance.
- Tighten all clamps and hardware to specification.
- Start the vehicle and check for exhaust leaks.
WARNING: This product can expose you to chemicals including nickel compounds, which are known to the State of California to cause cancer, and carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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