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1999 Infiniti QX4

Mufflers

Avoid the headache caused by a faulty muffler. Get your vehicle back on the road in no time by shopping for an exhaust muffler here at CarParts.com. Choose from our selection of high-quality replacement and performance mufflers. We have weld-on, clamp-on, and bolt-on mufflers. Our products are built tough by the best manufacturers. Don’t wait until your engine misfires. Take advantage of our unbeatable prices and check out our products today!
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Muffler -
Part Number: KV150108
Guaranteed to Fit
$89.49
Vehicle Fitment
  • 1999 Infiniti QX4 Base 6 Cyl 3.3L
Product Details
Inlet Size : 2.25 in. Inlet SizeOutlet Size : 3.25 in. Outlet SizeColor Finish : PolishedQuantity Sold : Sold individuallyWarranty : 1-year Kool Vue limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Sound Level : MildProduct Fit : UniversalReturns Policy : 30-Day Return PolicyInlet Quantity : SingleOutlet Quantity : DualInlet Location : CenterHeight : 4.5 in. HeightBody Length : 10 in. Body LengthWidth : 4.5 in. WidthAttachment Style : Clamp-OnMaterial : Made of Stainless SteelRecommended Use : Performance ReplacementExhaust Tip Material : Tip Made of SteelOutlet Location : CenterCase Shape : RoundExhaust Tip Finish : Polished TipOverall Length : 18.5 in. overall lengthInterchange Part Number : GM2707
Muffler
Part Number: KV150103
Guaranteed to Fit
$70.99
Vehicle Fitment
  • 1999 Infiniti QX4 Base 6 Cyl 3.3L
Product Details
Inlet Size : 2.25 in. Inlet SizeOutlet Size : 4 in. Outlet SizeColor Finish : PolishedQuantity Sold : Sold individuallyWarranty : 1-year Kool Vue limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Sound Level : MildReturns Policy : 30-Day Return PolicyInlet Quantity : SingleOutlet Quantity : SingleInlet Location : CenterHeight : 6 in. HeightBody Length : 13.75 in. Body LengthWidth : 6 in. WidthAttachment Style : Clamp-OnTip Diameter : 4 in. Tip DiameterMaterial : Made of Stainless SteelRecommended Use : Performance ReplacementExhaust Tip Material : Tip Made of SteelOutlet Location : CenterCase Shape : RoundExhaust Tip Finish : Polished TipOverall Length : 17.5 in. overall lengthInterchange Part Number : 842448
Muffler -
Part Number: DAV475240
Guaranteed to Fit
$66.49
Vehicle Fitment
  • 1999 Infiniti QX4 Base 6 Cyl 3.3L
Product Details
Quantity Sold : Sold individuallyWarranty : 25,000-mile Davico limited warranty on catalyst emission properties and 5-year or 50,000-mile limited warranty on tube, shell and weldsProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Recommended Use : OE Replacement
Muffler -
Part Number: WK18964
Guaranteed to Fit
$83.49
Vehicle Fitment
  • 1999 Infiniti QX4 Base 6 Cyl 3.3L
Product Details
Notes : Reflection Muffler TypeQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : SoundFX SeriesOverall Length : 30 in. overall lengthInterchange Part Number : RN96110001Material : Made of SteelRecommended Use : OE Replacement
Muffler -
Part Number: WK53111
Guaranteed to Fit
$95.49
Vehicle Fitment
  • 1999 Infiniti QX4 Base 6 Cyl 3.3L
Product Details
Quantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Quiet-Flow3 SeriesMaterial : Made of Aluminized SteelRecommended Use : OE Replacement
Muffler
Part Number: ANSADA31347
Guaranteed to Fit
$107.99
Vehicle Fitment
  • 1999 Infiniti QX4 Base 6 Cyl 3.3L
Product Details
Location : RearColor Finish : NaturalQuantity Sold : Sold individuallyWarranty : Ansa 1-Year Limited WarrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Attachment Style : Weld-On or Clamp-OnCase Shape : OvalInterchange Part Number : REPN961107, 54084Material : Made of Aluminized SteelRecommended Use : Performance Replacement
Muffler, Natural, Four Wheel Drive, Welded Assembly -
Part Number: APE7371
Guaranteed to Fit
$100.49
Vehicle Fitment
  • 1999 Infiniti QX4 Base 6 Cyl 3.3L 4WD; Welded Assembly
Product Details
Color Finish : NaturalQuantity Sold : Sold individuallyWarranty : Lifetime limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Recommended Use : OE ReplacementProduct Fit : Direct Fit
Muffler
Part Number: BO278375
Guaranteed to Fit
$153.99
Vehicle Fitment
  • 1999 Infiniti QX4 Base 6 Cyl 3.3L
Product Details
Location : RearQuantity Sold : Sold individuallyWarranty : Lifetime BRExhaust limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : REPN961107, DA31347, 54084Material : Made of Aluminized SteelRecommended Use : OE Replacement
Muffler
Part Number: ANSADA32045
Guaranteed to Fit
$197.99
Vehicle Fitment
  • 1999 Infiniti QX4 Base 6 Cyl 3.3L
Product Details
Location : CenterColor Finish : NaturalQuantity Sold : Sold individuallyWarranty : Ansa 1-Year Limited WarrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Attachment Style : Weld-On or Clamp-OnCase Shape : OvalInterchange Part Number : REPN961106Material : Made of Aluminized SteelRecommended Use : Performance Replacement
Afterburner Series Muffler, Natural, Universal
Part Number: F3150370
Universal Fit
$130.95
Product Details
Inlet Size : 3 in. Inlet SizeOutlet Size : 2.5 in. Outlet SizeColor Finish : NaturalQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Attachment Style : Weld-On or Clamp-OnSound Level : AggressiveMaterial : Made of Aluminized SteelRecommended Use : Performance ReplacementProduct Fit : UniversalInlet Quantity : SingleOutlet Location : OffsetSeries : Afterburner SeriesCase Shape : OvalOverall Length : 18 in. overall lengthOutlet Quantity : Dual Outlet(s)Internal Construction : ChamberedInlet Location : CenterHeight : 4 in. HeightBody Length : 13 in. Body LengthWidth : 10 in. Width
40 Series Delta Flow Series Muffler, Black, May Require Minor Modification
Part Number: F139425422
Universal Fit
$133.95
Product Details
Notes : May Require Minor ModificationInlet Size : 2.5 in. Inlet SizeOutlet Size : 2.25 in. Outlet SizeColor Finish : BlackQuantity Sold : Sold individuallyWarranty : 3-year Flowmaster limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Attachment Style : Clamp-On or Weld-OnSound Level : AggressiveMaterial : Made of Aluminized SteelRecommended Use : Performance ReplacementProduct Fit : May Require Minor ModificationInlet Quantity : SingleOutlet Location : Center (Dual)Series : 40 Series Delta Flow SeriesCase Shape : OvalOverall Length : 19 in. Overall LengthOutlet Quantity : Dual Outlet(s)Internal Construction : ChamberedInlet Location : CenterHeight : 4 in. HeightBody Length : 13 in. Body LengthWidth : 9.75 in. Width
Super 44 Series Muffler, Black, May Require Minor Modification
Part Number: F13942545
Universal Fit
$113.95
Product Details
Notes : May Require Minor ModificationInlet Size : 2.5 in. Inlet SizeOutlet Size : 2.5 in. Outlet SizeColor Finish : BlackQuantity Sold : Sold individuallyWarranty : 3-year Flowmaster limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Sound Level : AggressiveProduct Fit : May Require Minor ModificationInlet Quantity : SingleOutlet Quantity : Single Outlet(s)Internal Construction : ChamberedInlet Location : CenterHeight : 4 in. HeightBody Length : 13 in. Body LengthWidth : 9.75 in. WidthAttachment Style : Clamp-On or Weld-OnMaterial : Made of Aluminized SteelRecommended Use : Performance ReplacementOutlet Location : CenterSeries : Super 44 SeriesCase Shape : OvalOverall Length : 19 in. Overall LengthInterchange Part Number : REPC961101
Super 10 Series Muffler, Black
Part Number: F138430152
Universal Fit
$99.95
Product Details
Inlet Size : 3 in. Inlet SizeOutlet Size : 2.5 in. Outlet SizeColor Finish : BlackQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Attachment Style : Clamp-On or Weld-OnSound Level : AggressiveMaterial : Made of Stainless SteelRecommended Use : Performance ReplacementInlet Quantity : SingleOutlet Location : Center (Dual)Series : Super 10 SeriesCase Shape : OvalOverall Length : 12.5 in. overall lengthOutlet Quantity : Dual Outlet(s)Internal Construction : ChamberedInlet Location : CenterHeight : 4 in. HeightBody Length : 6.5 in. Body Length
Super 44 Series Muffler, Black, May Require Minor Modification
Part Number: F139430452
Universal Fit
$113.95
Product Details
Inlet Size : 3 in. Inlet SizeOutlet Size : 2.5 in. Outlet SizeColor Finish : BlackQuantity Sold : Sold individuallyWarranty : 3-year Flowmaster limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Attachment Style : Clamp-On or Weld-OnSound Level : AggressiveMaterial : Made of Aluminized SteelRecommended Use : Performance ReplacementProduct Fit : May Require Minor ModificationInlet Quantity : SingleOutlet Location : Center (Dual)Series : Super 44 SeriesCase Shape : OvalOverall Length : 19 in. Overall LengthOutlet Quantity : Dual Outlet(s)Internal Construction : ChamberedInlet Location : CenterHeight : 4 in. HeightBody Length : 13 in. Body LengthWidth : 9.75 in. Width
Super 44 Series Muffler, Black, May Require Minor Modification
Part Number: F139425472
Universal Fit
$113.95
Product Details
Notes : May Require Minor ModificationInlet Size : 2.5 in. Inlet SizeOutlet Size : 2.5 in. Outlet SizeColor Finish : BlackQuantity Sold : Sold individuallyWarranty : 3-year Flowmaster limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Sound Level : AggressiveProduct Fit : May Require Minor ModificationInlet Quantity : SingleOutlet Quantity : Dual Outlet(s)Internal Construction : ChamberedInlet Location : CenterHeight : 4 in. HeightBody Length : 13 in. Body LengthWidth : 9.75 in. WidthAttachment Style : Clamp-On or Weld-OnMaterial : Made of Aluminized SteelRecommended Use : Performance ReplacementExhaust Tip Material : Tip Made of Stainless SteelOutlet Location : Center (Dual)Series : Super 44 SeriesCase Shape : OvalExhaust Tip Finish : Polished TipOverall Length : 19 in. Overall Length
Page 1 of 32 | Showing 1 - 15 of 476 results

Top Rated Products

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Muffler, Polished
$89.49( Review)
Good quality parts, fast service and exact fit...3 of my favorite things when lookingSee More
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Fit perfect in my car
Nathanael C.
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Shopping for Muffler

Muffler Shopping Info

How Much Does a Muffler Replacement Cost?

A replacement muffler can cost you anywhere between $50 and $250 on parts alone. An auto repair shop may charge you $80 to $100 for labor, but this may vary depending on your specific vehicle and the rates in your area.

What Is a Muffler?

A muffler is a flask-shaped metal device installed along the exhaust pipe underneath your car. It comes in different designs and sizes but the function remains all the same. It reduces the airborne noise coming from your car’s engine. It suppresses and controls the engine noise by breaking the soundwaves down inside the assembly.

Aside from muffling and improving your vehicle’s performance, mufflers also keep toxic fumes away from the cabin. Some modern mufflers are also known to improve a vehicle’s performance.

Mufflers are highly regulated in different states and modifications are often strictly prohibited. Remember to check your state’s regulations before purchasing an aftermarket muffler.

Shop for Aftermarket Mufflers on CarParts.com

Here at CarParts.com, we have a selection of aftermarket mufflers for various makes and models. Choose from weld-on, clamp-on, or bolt-on mufflers in various finishes for your ride. We source our products from only the most trusted brands in the industry, so you're sure to get one that's built to last.

Our mufflers are also competitively priced, allowing you to get back on the road safely without going over budget. Need to repair your ride right away? Don't worry, our distribution centers are strategically located around the country for fast, efficient shipping. Get your order in as fast as two business days! Our friendly customer service team is also available round the clock to answer any concerns or questions you might have about the product you’re looking to buy.

Ready to shop? Enter your ride’s year, make, and model into our website's vehicle selector to start shopping. You may also use our search filters to narrow down your options by brand, price range, or quantity. Why pay dealership prices when you can get the same quality for less? Check out our products now and get the best deals on aftermarket mufflers today!

Helpful Automotive Resources

Improve Your Exhaust Note With These Exhaust System Parts
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Common Types of Mufflers
Common Types of MufflersLet’s check out the most common types of mufflers: Chambered Mufflers
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The Most Common Types of Car Damage from Speed Bumps and How to Prevent ThemLet’s find out which vehicle components may fail when you aren’t too careful about driving on speed bumps. Which Parts May Get Damaged When You Drive Too Fast On Speed Bumps?