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Replacement and OEM Parts for 2003 Infiniti QX4 Muffler

2003 Infiniti QX4 Muffler

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2003 Infiniti QX4
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Exhaust Manifolds, Pipes & Mufflers
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6 Products found

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  • OEM 2003 Infiniti QX4 Muffler Assy-Exhaust Main Diagram - 20100-5W015
    View Related Parts

    OEM (Genuine) 2003 Infiniti QX4 Muffler Assy-Exhaust Main

    PartNumber: 20100-5W015
    OEM 2003 Infiniti QX4 Muffler Assy-Exhaust Main - 20100-5W015
    Product Specifications
    • Notes: 2001-03, W/4WD;2001-03, W/O 4WD
    • Other Names: Muffler
    • Item Dimensions: 67.3 x 37.8 x 13.3 inches
    • Item Weight: 35.00 Pounds
    • Replaces: 20100-5W002, 20100-5W014, 20100-5W000, 20100-5W012, 20100-5W01E, 20100-5W010, 20100-5W004
    • Part Description: Muffler Assy-Exhaust Main
    More Info
    $790.81 MSRP: $1084.80
    You Save: $293.99 (28%)
  • Walker Soundfx Front Aluminized Steel Oval Direct Fit Exhaust Muffler for 2003 Infiniti QX4 - 18963

    Walker® Soundfx Front Aluminized Steel Oval Direct Fit Exhaust Muffler for 2003 Infiniti QX4

    PartNumber: 18963
    Product Specifications
    • Notes: If welded Assy, replace all Reqd parts; Optional; SoundFX for 54377
    • Body Height: 5.500
    • Body Length: 18.000
    • Body Material: Steel
    • Body Width: 11.000
    • Finish: Aluminized
    • Grade Type: Regular
    • Inlet 1 Inside Diameter: 1.750
    • Inlet 1 Type: Pipe Connection
    • Inlet 2 Inside Diameter: 1.750
    • Inlet 2 Type: Pipe Connection
    • Inlet Configuration: Dual
    • Inlet Offset: 1.5
    • Internet Product Code (IPC): A021B8B9135
    • Item has MSDS (SDS): N
    • Max Year Covered: 2004
    • MFG Brand Name: Walker Exhaust
    • MFG Model # (Series): 18963
    • MFG Name: Tenneco, Inc
    • Min Year Covered: 2001
    • Most Popular Make / Model: Nissan Pathfinder
    • Most Popular Year: 2001
    • Muffler Body Height: 5.5
    • Muffler Body Length: 18.0
    • Muffler Body Material: Steel
    • Muffler Body Width: 11.0
    • Muffler Color / Finish: Aluminized
    • Muffler Inlet: Dual Inlet - Offset
    • Muffler Inlet Connection Type: Pipe Connection
    • Muffler Inlet Count: 2
    • Muffler Inlet Diameter (in): 1.75
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet: Offset
    • Muffler Outlet Connection Type: 2-Bolt Welded Flange
    • Muffler Outlet Count: 1
    • Muffler Outlet Diameter (in): 2.0
    • Muffler Outlet Diameter Designation: Outside Diameter
    • Muffler Overall Length: 39.5
    • Muffler Reversible: No
    • Muffler Shape: Oval
    • Outlet Configuration: Offset
    • Overall Length: 39.500
    • Product Grade: Economy
    • Reversible: No
    • Shape: Oval
    • Supplier Company Name: Tenneco, Inc
    • Total Part VIO: 158500
    • Universal Or Specific Fit: Specific
    • UPC: 086387189637
    • Part Description: Soundfx Front Aluminized Steel Oval Direct Fit Exhaust Muffler
    More Info
    $79.22
  • OEM 2003 Infiniti QX4 Post Muffler Assembly Diagram - 20350-4W020
    View Related Parts

    OEM (Genuine) 2003 Infiniti QX4 Post Muffler Assembly

    PartNumber: 20350-4W020
    OEM 2003 Infiniti QX4 Post Muffler Assembly - 20350-4W020
    Product Specifications
    • Notes: 2001-03
    • Other Names: Muffler, Resonator
    • Item Dimensions: 49.4 x 9.9 x 9.9 inches
    • Item Weight: 13.00 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 20350-4W01A, 20350-4W010
    • Part Description: Post Muffler Assembly
    More Info
    $303.27 MSRP: $416.02
    You Save: $112.75 (28%)
  • Walker Quiet Flow Rear Stainless Steel Round Aluminized Exhaust Muffler And Pipe Assembly for 2003 Infiniti QX4 - 54378

    Walker® Quiet Flow Rear Stainless Steel Round Aluminized Exhaust Muffler And Pipe Assembly for 2003 Infiniti QX4

    PartNumber: 54378
    Product Specifications
    • Notes: Premium - Limited Lifetime Warranty
    • Body Height: 5.000
    • Body Length: 12.000
    • Body Material: Stainless Steel
    • Body Width: 5.000
    • Exhaust Component Mount Type: Uses Factory Hangers
    • Finish: Aluminized
    • Grade Type: Regular
    • Inlet 1 Outside Diameter: 2.100
    • Inlet 1 Type: 2 Bolt Welded Flange
    • Inlet Configuration: Center
    • Internet Product Code (IPC): 9903A28C6B5
    • Item has MSDS (SDS): N
    • Max Year Covered: 2004
    • MFG Brand Name: Walker Exhaust
    • MFG Model # (Series): 54378
    • MFG Name: Tenneco, Inc
    • Min Year Covered: 2001
    • Most Popular Make / Model: Nissan Pathfinder
    • Most Popular Year: 2001
    • Muffler Body Height: 5
    • Muffler Body Length: 12
    • Muffler Body Material: Stainless Steel
    • Muffler Body Width: 5
    • Muffler Color / Finish: Bare
    • Muffler Inlet: Centered
    • Muffler Inlet Connection Type: 2-Bolt Welded Flange
    • Muffler Inlet Count: 1
    • Muffler Inlet Diameter Designation: Outside Diameter
    • Muffler Outlet: Centered
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Count: 1
    • Muffler Outlet Diameter (in): 2.25
    • Muffler Outlet Diameter Designation: Outside Diameter
    • Muffler Overall Length: 46.55
    • Muffler Reversible: No
    • Muffler Shape: Round
    • Outlet 1 Outside Diameter: 2.250
    • Outlet Configuration: Center
    • Overall Length: 46.500
    • Product Grade: Economy
    • Shape: Round
    • Supplier Company Name: Tenneco, Inc
    • Total Part VIO: 158500
    • UPC: 086387543781
    • Part Description: Quiet Flow Rear Stainless Steel Round Aluminized Exhaust Muffler And Pipe Assembly
    More Info
    $75.15
  • Walker Soundfx Rear Aluminized Steel Round Direct Fit Exhaust Muffler for 2003 Infiniti QX4 - 18962

    Walker® Soundfx Rear Aluminized Steel Round Direct Fit Exhaust Muffler for 2003 Infiniti QX4

    PartNumber: 18962
    Product Specifications
    • Notes: optional; SoundFX for 54378
    • Body Height: 5.000
    • Body Length: 12.000
    • Body Material: Steel
    • Body Width: 5.000
    • Finish: Aluminized
    • Grade Type: Regular
    • Inlet 1 Type: 2 Bolt Welded Flange
    • Inlet Configuration: Center
    • Internet Product Code (IPC): 94A21ACA976
    • Item has MSDS (SDS): N
    • Max Year Covered: 2004
    • MFG Brand Name: Walker Exhaust
    • MFG Model # (Series): 18962
    • MFG Name: Tenneco, Inc
    • Min Year Covered: 2001
    • Most Popular Make / Model: Nissan Pathfinder
    • Most Popular Year: 2001
    • Muffler Body Height: 5.0
    • Muffler Body Length: 12.0
    • Muffler Body Material: Steel
    • Muffler Body Width: 5.0
    • Muffler Color / Finish: Aluminized
    • Muffler Inlet: Centered
    • Muffler Inlet Connection Type: 2-Bolt Welded Flange
    • Muffler Inlet Count: 1
    • Muffler Inlet Diameter (in): 2.0
    • Muffler Inlet Diameter Designation: Outside Diameter
    • Muffler Outlet: Centered
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Outlet Count: 1
    • Muffler Outlet Diameter (in): 2.25
    • Muffler Outlet Diameter Designation: Outside Diameter
    • Muffler Overall Length: 49.5
    • Muffler Reversible: No
    • Muffler Shape: Round
    • Outlet 1 Outside Diameter: 2.250
    • Outlet Configuration: Center
    • Overall Length: 49.500
    • Product Grade: Economy
    • Reversible: No
    • Shape: Round
    • Supplier Company Name: Tenneco, Inc
    • Total Part VIO: 158500
    • Universal Or Specific Fit: Specific
    • UPC: 086387189620
    • Part Description: Soundfx Rear Aluminized Steel Round Direct Fit Exhaust Muffler
    More Info
    $57.77
  • Bosal Rear Exhaust Muffler for 2003 Infiniti QX4 - 278-713

    Bosal® Rear Exhaust Muffler for 2003 Infiniti QX4

    PartNumber: 278-713
    Product Specifications
    • Exhaust Component Mount Type: Uses New Hangers (Included)
    • Inlet Flange Bolt Hole Quantity: 2
    • Internet Product Code (IPC): 60E69409117
    • Item has MSDS (SDS): No
    • MFG Brand Name: Bosal
    • MFG Model # (Series): 278-713
    • Muffler Body Height (in): 6.1
    • Muffler Body Length: 10.61
    • Muffler Body Material: Aluminized Steel
    • Muffler Color/Finish: Aluminized
    • Muffler Inlet: Centered
    • Muffler Inlet Connection Type: Flange Connection
    • Muffler Inlet Count: 1
    • Muffler Inlet Diameter (in): 2.03
    • Muffler Inlet Diameter Designation: Inside Diameter
    • Muffler Outlet: Centered
    • Muffler Outlet Connection Type: Pipe Connection
    • Muffler Overall Length (in): 49.0
    • Muffler Reversible: No
    • Muffler Shape: Oval
    • Muffler Type: Reflection
    • Pipe Material: Aluminized Steel
    • Resonator Shape: Round
    • Series: Direct-Fit Exhaust
    • Supplier Company Name: Bosal
    • UPC: 623920308157
    • Part Description: Rear Exhaust Muffler
    More Info