Product Description
The WALKER 18853 SoundFX® Exhaust Muffler is engineered as a direct-fit replacement for heavy-duty Dodge Ram 2500 and 3500 models equipped with the 5.9L Cummins diesel engine. Built from 100% aluminized steel, this muffler significantly improves durability and corrosion resistance compared to standard low-carbon steel.
Its robust design includes mechanically joined internal tubes, spun-locked heads, and an integrated internal drainage system to reduce moisture buildup—common in diesel exhaust systems. The result is a long-lasting, reliable muffler capable of withstanding thermal stress and harsh operating conditions.
OE-style hangers and pipe routing ensure simple, bolt-on installation without fabrication. Louvered internal tubes deliver a controlled, factory-like exhaust tone suitable for diesel applications while maintaining optimal flow characteristics.
Key Features
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Aluminized Steel Construction for corrosion resistance and long service life
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Direct-Fit Bolt-On Replacement with OE-style hangers
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Louvered Tubes provide factory-style sound control
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Durable Spun-Locked Heads minimize distortion during heat cycles
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Internal Drainage System reduces moisture accumulation
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Designed and Tested for extended performance in heavy-duty applications
Technical Specifications
| Specification |
Detail |
| Shape |
Round |
| Finish |
Aluminized |
| Body Material |
Steel |
| Inlet Type |
Pipe Connection |
| Outlet Type |
Pipe Connection |
| Inlet Inside Diameter |
4.000 in |
| Outlet Inside Diameter |
3.000 in |
| Body Height |
8.375 in |
| Body Length |
25.000 in |
| Body Width |
8.375 in |
| Inlet Location |
Offset |
| Outlet Location |
Offset |
| Inlet Quantity |
1 |
| Outlet Quantity |
1 |
| Hanger Included |
Yes |
| Reversible |
No |
| Tunable |
No |
| Overall Length |
33.500 in |
| Inlet Offset |
1.750 in |
| Universal or Specific Fit |
Specific |
| Grade Type |
Premium |
Vehicle Compatibility
Dodge
Ram 2500
Ram 3500
Installation & Warranty Notes
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Direct-fit installation with OE-style mounting points
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No welding or fabrication required
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Designed to replicate factory acoustic performance
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Built for heavy-duty diesel operating environments