Best Diesel Muffler 4 Inch in 2025
Updated on August 2025
#1
Recommended
6% Off
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- Inlet and outlet diameter of 4 inches; overall length measures 30 inches, with a body length of 24 inches and a 7-inch round body type.
- Straight-through design enhances airflow by optimizing internal pipe space; constructed with four layers of material and CRF technology for a low, deep tone.
- Crafted from polished stainless steel for high temperature resistance; features factory-style welded structure for durability and extended lifespan.
- Universal fit for most vehicles; measure exhaust pipe size and space before purchase for compatibility.
- Requires welding or exhaust clamps for installation; professional installation is recommended.
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- Inlet and outlet diameter of 4 inches; overall length measures 30 inches, with a body length of 24 inches and a 7-inch round body type.
- Straight-through design enhances airflow by optimizing internal pipe space; constructed with four layers of material and CRF technology for a low, deep tone.
- Crafted from polished stainless steel for high temperature resistance; features factory-style welded structure for durability and extended lifespan.
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#2
Value for Money
13% Off
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- Inlet and outlet with 4" inner diameter; overall length of 30" and body length of 24"; features a 7" round design that is interchangeable at both ends.
- Durable diesel exhaust muffler featuring a fully welded design that enhances exhaust flow and performance.
- Constructed from stainless steel for long-lasting durability; utilizes Continuous Roving Fiberglass technology to minimize unwanted noise.
- Universal 4 inch inlet and outlet suitable for any 4 inch exhaust pipe, designed for seamless welding.
- Includes one 4 inch muffler; ensure the Brand Logo is "Upower" before purchase.
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- Inlet and outlet with 4" inner diameter; overall length of 30" and body length of 24"; features a 7" round design that is interchangeable at both ends.
- Durable diesel exhaust muffler featuring a fully welded design that enhances exhaust flow and performance.
- Constructed from stainless steel for long-lasting durability; utilizes Continuous Roving Fiberglass technology to minimize unwanted noise.
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#3
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- 4" inner diameter inlet and outlet, 30" overall length, 24" body length, 7" round body type
- Straight-through design with TIG welding
- Durable stainless steel construction, resistant to rust
- Reduces unwanted interior resonance
- Body features a polished surface finish
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- 4" inner diameter inlet and outlet, 30" overall length, 24" body length, 7" round body type
- Straight-through design with TIG welding
- Durable stainless steel construction, resistant to rust
- Reduces unwanted interior resonance
- Body features a polished surface finish
#4
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- 4inch Muffler Dimension: 4" Inlet (ID), 4" Outlet (ID), 24" Body length, 30" Overall length, 7" round body width. No Inlet or Outlet Difference.
- Straight Through Design: The diesel exhaust muffler has straight through design allowing a higher flow possible to improve exhaust veloctiy performance , brings a nice deep, throaty tone.
- Staninless Steel Material: This universal resonator is made of stainless steel ensuring long-lasting durability and anti-rust to improve the life span of the mufflers.
- High Quality Construction: Our diesel exhaust muffler features TIG welding design with 4 layers of material and CRF (Continuous Roving Fiberglass) technology to dampen exhaust noise and clear up the rasp, improving vehicle performance.
- Easy to Install: 4 inch inlet & outlet diesel resonator universal fit for all 4 inch exhaust pipe. Welding or exhaust clamps is required. Professional installation is recommended."
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- 4inch Muffler Dimension: 4" Inlet (ID), 4" Outlet (ID), 24" Body length, 30" Overall length, 7" round body width. No Inlet or Outlet Difference.
- Straight Through Design: The diesel exhaust muffler has straight through design allowing a higher flow possible to improve exhaust veloctiy performance , brings a nice deep, throaty tone.
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#5
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- 7" x 7" Round muffler designed for a deep, resonant sound typical of MagnaFlow products.
- Dyno-tested to enhance engine power and optimize exhaust gas flow dynamics.
- Features a straight-through perforated core and two-stage acoustic packing for a smooth exhaust tone.
- Universal design allows for flexible installation options to suit various vehicle setups.
- Backed by a limited lifetime construction warranty for durable performance.
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- 7" x 7" Round muffler designed for a deep, resonant sound typical of MagnaFlow products.
- Dyno-tested to enhance engine power and optimize exhaust gas flow dynamics.
- Features a straight-through perforated core and two-stage acoustic packing for a smooth exhaust tone.
- Universal design allows for flexible installation options to suit various vehicle setups.
- Backed by a limited lifetime construction warranty for durable performance.
#6
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- Inlet and outlet diameter: 4"; overall length: 30"; body width: 7".
- Designed for optimal exhaust flow with a 100% welded construction that minimizes back pressure.
- Crafted with a free-flowing perforated stainless steel core and CRF technology to maintain a deep race tone while reducing engine noise.
- Universal fit for easy installation; features polished stainless steel for enhanced corrosion resistance and durability.
- Compatible with various vehicles, this exhaust tip's universal design fits tailpipes with a diameter of 4 inches (102mm).
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- Inlet and outlet diameter: 4"; overall length: 30"; body width: 7".
- Designed for optimal exhaust flow with a 100% welded construction that minimizes back pressure.
- Crafted with a free-flowing perforated stainless steel core and CRF technology to maintain a deep race tone while reducing engine noise.
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#7
37% Off
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- Compatible with select Ram and Dodge Ram models from 2007 to 2012
- Verify fit using the 'Amazon Confirmed Fit' service before purchase
- Easy installation with OE-style features, no special tools required
- Internal drainage design minimizes rust by reducing moisture
- Built for durability with features to manage temperature changes
- Acoustic design ensures reduced noise levels for better sound quality
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- Compatible with select Ram and Dodge Ram models from 2007 to 2012
- Verify fit using the 'Amazon Confirmed Fit' service before purchase
- Easy installation with OE-style features, no special tools required
- Internal drainage design minimizes rust by reducing moisture
- Built for durability with features to manage temperature changes
- Acoustic design ensures reduced noise levels for better sound quality
#8
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- 4 inch inlet and outlet with a total length of 13.7 inches; compatible with 4 inch OD pipes only; verify pipe measurements before purchasing
- Features a free-flowing perforated stainless steel core with mesh wrap and acoustical fiber fill, designed to absorb sound and produce a smooth, deep tone
- Straight-through design minimizes exhaust flow restriction and reduces back pressure, enhancing exhaust velocity
- Constructed from polished stainless steel for superior corrosion resistance and durability; professional installation recommended as no instructions are provided
- Customer support available through Amazon Mail for any installation issues, with a 24-hour response service
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- 4 inch inlet and outlet with a total length of 13.7 inches; compatible with 4 inch OD pipes only; verify pipe measurements before purchasing
- Features a free-flowing perforated stainless steel core with mesh wrap and acoustical fiber fill, designed to absorb sound and produce a smooth, deep tone
- Straight-through design minimizes exhaust flow restriction and reduces back pressure, enhancing exhaust velocity
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#9
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- 4" inner diameter for both inlet and outlet, with a total length of 30" and a body width of 7".
- Effectively reduces exhaust noise while improving sound quality.
- Produces a deep, throaty exhaust tone post-installation.
- Features a straight-through design for optimal airflow.
- Constructed from stainless steel for enhanced durability.
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- 4" inner diameter for both inlet and outlet, with a total length of 30" and a body width of 7".
- Effectively reduces exhaust noise while improving sound quality.
- Produces a deep, throaty exhaust tone post-installation.
- Features a straight-through design for optimal airflow.
- Constructed from stainless steel for enhanced durability.
#10
6% Off
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- Universal fit; verify product dimensions
- Research compatibility by entering vehicle details before purchase
- Durable aluminized steel construction
- Engineered for extended service life
- Reduces engine noise in-cab and externally
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- Universal fit; verify product dimensions
- Research compatibility by entering vehicle details before purchase
- Durable aluminized steel construction
- Engineered for extended service life
- Reduces engine noise in-cab and externally
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