Search Bar
Search by Part Number or Keywords
  • My Garage
  • My Account
  • Cart
  • Body & Mirrors
  • Chassis & Brakes
  • Engine & Drivetrain
  • Electrical & Lighting
Help Center
< Back ×
Replacement and OEM Parts for 2003 Nissan Altima Catalytic Converters & Components

2003 Nissan Altima Catalytic Converters & Components

My Vehicle Change Vehicle
2003 Nissan Altima
Change Vehicle
Vehicle Options
We need more information about your vehicle to make a correct determination of fitment
< Back to View All
Engine & Drivetrain

20 products about 2003 Nissan Altima Catalytic Converters & Components found

Show Item:
  • 30
  • 60
  • 90
Sort by:
Recommended
Filter
Sort
View by
  • OEM (Genuine) 2003 Nissan Altima Gasket-Catalyst

    PartNumber: 20692-65J00
    OEM 2003 Nissan Altima Gasket-Catalyst - 20692-65J00
    Product Specifications
    • Notes: 2.5 Liter; 3.5 Liter
    • Item Dimensions: 6.2 x 5.2 x 0.1 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 20692-P9000, 20692-53F00
    • Part Description: 2003 Nissan Altima Gasket-Catalyst
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | Base, Hybrid, S, SE, SE-R, SL, SR | 4 Cyl 2.5 L ELECTRIC/GAS, 4 Cyl 2.5 L GAS, 6 Cyl 3.5 L GAS
    $11.54 MSRP: $15.75
    You Save: $4.21 (27%)
  • OEM (Genuine) 2003 Nissan Altima Three Way Catalyst Converter

    PartNumber: 208A1-8J400
    OEM 2003 Nissan Altima Three Way Catalyst Converter - 208A1-8J400
    Product Specifications
    • Notes: Altima; All; 3.5L; Front; Right Bank; 3.5 Liter
    • Location: Passenger Side
    • Other Names: Catalytic Converter, Preconverter
    • Item Dimensions: 14.3 x 10.8 x 9.4 inches
    • Item Weight: 11.50 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2003 Nissan Altima Three Way Catalyst Converter
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | Base, SE | 6 Cyl 3.5 L GAS
    $978.12 MSRP: $1351.22
    You Save: $373.10 (28%)
  • MagnaFlow OBDII Universal Fit Oval Body Catalytic Converter for 2003 Nissan Altima - 441305

    MagnaFlow® OBDII Universal Fit Oval Body Catalytic Converter for 2003 Nissan Altima

    PartNumber: 441305
    Product Specifications
    • Notes: CARB Executive Order D-193-96;Engine Family Number 3NSXV03.5C7A;Certification Level : LEV1 LEV; OE Spec; Cutting & Welding Reqd During Installation
    • Air Tube Adaptable: No
    • Body Height: 3.75
    • Body Length: 9
    • Body Material: Stainless Steel
    • Body Shape: Oval
    • Body Type: Clam Shell
    • Body Width: 5.5
    • Finish: Stainless Steel
    • Heat Shield Attached: Yes
    • Heat Shield Included: Yes
    • Heat Shield Material: Aluminized Steel
    • Inlet Attachment: Weld-On
    • Inlet Diameter: 2.25
    • Inlet Orientation: Straight
    • Inlet Quantity: 1
    • Material: Stainless Steel
    • Outlet Attachment: Weld-On
    • Outlet Diameter: 2.25
    • Outlet Orientation: Straight
    • Outlet Quantity: 1
    • Overall Length: 13
    • Oxygen Sensor Location: None
    • Sensor Port Count: 0
    • Series: California
    • Substrate Material: Ceramic
    • Title: California Universal
    • UPC: 841380069948
    • Part Description: 2003 Nissan Altima OBDII Universal Fit Oval Body Catalytic Converter
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | All Trims | 6 Cyl 3.5L
    $507.87
  • OEM (Genuine) 2003 Nissan Altima Three Way Catalytic Converter

    PartNumber: 208A2-8J110
    OEM 2003 Nissan Altima Three Way Catalytic Converter - 208A2-8J110
    Product Specifications
    • Notes: Altima; All; 3.5L; Front; Left Bank; To 11/02; 3.5 Liter
    • Location: Driver Side
    • Other Names: Catalytic Converter, Preconverter
    • Item Dimensions: 14.7 x 8.4 x 6.3 inches
    • Item Weight: 10.90 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2003 Nissan Altima Three Way Catalytic Converter
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | Base, SE | 6 Cyl 3.5 L GAS
    $780.09 MSRP: $1076.18
    You Save: $296.09 (28%)
  • Davico Direct Fit Catalytic Converter and Pipe Assembly for 2003 Nissan Altima - 18316

    Davico® Direct Fit Catalytic Converter and Pipe Assembly for 2003 Nissan Altima

    PartNumber: 18316
    Product Specifications
    • Notes: Not legal for use in Calif; Illegal for installation in NY on vehicles equipped w/Calif emission systems; No O2 port
    • Catalytic Converter Overall Length: 39"
    • Converter Configuration: Direct Fit
    • Inlet Type: 3 Bolt Fixed Flange (2)
    • O2 Sensor Port: No
    • Outlet Type: 2 Bolt Fixed Flange
    • Position: Rear
    • UPC: 841809115379
    • Part Description: 2003 Nissan Altima Direct Fit Catalytic Converter and Pipe Assembly
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | All Trims | 6 Cyl 3.5L
    $260.01
  • MagnaFlow OBDII Universal Fit Oval Body Catalytic Converter for 2003 Nissan Altima - 457105

    MagnaFlow® OBDII Universal Fit Oval Body Catalytic Converter for 2003 Nissan Altima

    PartNumber: 457105
    Product Specifications
    • Notes: Engine Family Number 3NSXV02.5D5A;CARB Executive Order D-193-124;Certification Level : LEV1 ULEV; OE Spec; Cutting & Welding Reqd During Installation
    • Air Tube: No
    • Body Type: Clam Shell
    • Catalytic Converter Body Length: 9"
    • Catalytic Converter Body Shape: Oval
    • Catalytic Converter Format: Pre-Catalytic Converter and Main Catalytic Converter
    • Catalytic Converter Overall Length: 13"
    • Catalytic Converter Oxygen Sensor Location: None
    • Catalytic Converter Substrate Material: Ceramic
    • Catalytic Converter Width: 5.5"
    • Catalytic Inlet Diameter: 2.25"
    • Catalytic Outlet Diameter: 2.25"
    • Catalytic Series: OBDII
    • Converter Body Material: Stainless Steel
    • Converter Configuration: Universal Fit
    • Inlet Connection Type: Weld-On
    • Inlet Position: Center
    • Installation Complexity: Professional Installation Recommended
    • Main Piping Diameter: 2.25"
    • O2 Sensor Port: No
    • Outlet Connection Type: Weld-On
    • Outlet Position: Center
    • UPC: 888563012032
    • Part Description: 2003 Nissan Altima OBDII Universal Fit Oval Body Catalytic Converter
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | All Trims | 4 Cyl 2.5L
    $344.95
  • OEM (Genuine) 2003 Nissan Altima Three Way Catalyst Converter

    PartNumber: 208A2-8J12A
    OEM 2003 Nissan Altima Three Way Catalyst Converter - 208A2-8J12A
    Product Specifications
    • Notes: Altima; All; 3.5L; Front; Left Bank; From 11/02
    • Other Names: Catalytic Converter, Preconverter
    • Item Dimensions: 18.9 x 8.2 x 7.9 inches
    • Item Weight: 10.20 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 208A2-8J120, 208A2-8J112
    • Part Description: 2003 Nissan Altima Three Way Catalyst Converter
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | Base, S, SE, SE-R, SL | 6 Cyl 3.5 L GAS
    $556.42 MSRP: $759.20
    You Save: $202.78 (27%)
  • Bosal Direct Fit Catalytic Converter And Pipe Assembly for 2003 Nissan Altima - 099-1401

    Bosal® Direct Fit Catalytic Converter And Pipe Assembly for 2003 Nissan Altima

    PartNumber: 099-1401
    Product Specifications
    • Notes: Not Legal For Sale In CA. Not Legal In NY For Vehicles w/Calif Emissions.
    • CARB Compliant: No
    • Catalytic Converter Air Tube Adaptable: Not Air Tube Kit Adaptable
    • Catalytic Converter Format: Main Catalytic Converter
    • Catalytic Converter Housing Material: Stainless Steel
    • Catalytic Converter Length (in): 41.0
    • Catalytic Converter Oxygen Sensor Location: No Port Location
    • Catalytic Converter Substrate Material: Ceramic
    • Exhaust Component Mount Type: Uses Factory Hangers
    • Exhaust Pipe Inlet Connection Type: Flange or slip fit
    • Exhaust Pipe Outlet Connection Type: Flange or slip fit
    • Fitment: Direct OE Replacement
    • Internet Product Code (IPC): 7BB3156B78A
    • Item Grade: Standard Replacement
    • Item has MSDS (SDS): N
    • MFG Brand Name: Bosal
    • MFG Model # (Series): 099-1401
    • MFG Name: Bosal
    • Supplier Company Name: Bosal
    • UPC: 623920311928
    • Part Description: 2003 Nissan Altima Direct Fit Catalytic Converter And Pipe Assembly
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | Base | 4 Cyl 2.5L
    • 2003 Nissan Altima | S | 4 Cyl 2.5L
    • 2003 Nissan Altima | SL | 4 Cyl 2.5L
    Show More
    $266.51
  • Davico Direct Fit Catalytic Converter for 2003 Nissan Altima - 18032

    Davico® Direct Fit Catalytic Converter for 2003 Nissan Altima

    PartNumber: 18032
    Product Specifications
    • Notes: Not legal for use in Calif; Illegal for installation in NY on vehicles equipped w/Calif emission systems; 1 O2 Port
    • Height: 7 in.
    • Inlet 1 Gsk.: CEG743
    • Inlet 1 Type: 6 Bolt Fixed Flange
    • Large Pkg. Fee: No
    • Number of O2 Sensors: 1
    • Outlet 1 Gsk.: EG24004
    • Outlet 1 Type: 3 Bolt Fixed Flange
    • Over All Length: 13.75 in.
    • UPC: 841809112798
    • Use Davico Decarbonizing Induction Kit 1540ea: Yes
    • Width: 6.5 in.
    • Part Description: 2003 Nissan Altima Direct Fit Catalytic Converter
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | All Trims | 6 Cyl 3.5L
    $197.04
  • OEM (Genuine) 2003 Nissan Altima Gasket - Exhaust

    PartNumber: 20691-8J100
    OEM 2003 Nissan Altima Gasket - Exhaust - 20691-8J100
    Product Specifications
    • Notes: 3.5 Liter
    • Location: Passenger Side; Driver Side
    • Other Names: Catalytic Converter Gasket
    • Item Dimensions: 3.1 x 3.1 x 0.2 inches
    • Item Weight: 0.40 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2003 Nissan Altima Gasket - Exhaust
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | SE, SE-R, SL | 6 Cyl 3.5 L GAS
    $9.99 MSRP: $13.63
    You Save: $3.64 (27%)
  • MagnaFlow OBDII Universal Fit Oval Body Catalytic Converter for 2003 Nissan Altima - 444105

    MagnaFlow® OBDII Universal Fit Oval Body Catalytic Converter for 2003 Nissan Altima

    PartNumber: 444105
    Product Specifications
    • Notes: Engine Family Number 3NSXV03.5C7A;CARB Executive Order D-193-96;Certification Level : LEV1 LEV; OE Spec; Cutting & Welding Reqd During Installation
    • Air Tube: No
    • Body Type: Clam Shell
    • Catalytic Converter Body Length: 9"
    • Catalytic Converter Body Shape: Oval
    • Catalytic Converter Format: Pre-Catalytic Converter and Main Catalytic Converter
    • Catalytic Converter Overall Length: 13"
    • Catalytic Converter Oxygen Sensor Location: None
    • Catalytic Converter Substrate Material: Ceramic
    • Catalytic Converter Width: 5.5"
    • Catalytic Inlet Diameter: 2.25"
    • Catalytic Outlet Diameter: 2.25"
    • Catalytic Series: OBDII
    • Converter Body Material: Stainless Steel
    • Converter Configuration: Universal Fit
    • Inlet Connection Type: Weld-On
    • Inlet Position: Center
    • Installation Complexity: Professional Installation Recommended
    • Main Piping Diameter: 2.25"
    • O2 Sensor Port: No
    • Outlet Connection Type: Weld-On
    • Outlet Position: Center
    • Position: Front Passenger Side
    • Part Description: 2003 Nissan Altima OBDII Universal Fit Oval Body Catalytic Converter
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | All Trims | 6 Cyl 3.5L
    $335.85
  • Davico Direct Fit Catalytic Converter and Pipe Assembly for 2003 Nissan Altima - 18120

    Davico® Direct Fit Catalytic Converter and Pipe Assembly for 2003 Nissan Altima

    PartNumber: 18120
    Product Specifications
    • Notes: Not legal for use in Calif; Illegal for installation in NY on vehicles equipped w/Calif emission systems
    • Gaskets Included: Yes
    • Height: 6 in.
    • Inlet 1 Gsk.: 24749
    • Inlet 2 Gsk.: 24731
    • Large Pkg. Fee: No
    • Over All Length: 39.75 in.
    • UPC: 841809113641
    • Use Davico Decarbonizing Induction Kit 1540ea: Yes
    • Width: 8 in.
    • Part Description: 2003 Nissan Altima Direct Fit Catalytic Converter and Pipe Assembly
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | All Trims | 4 Cyl 2.5L
    $196.09
  • OEM (Genuine) 2003 Nissan Altima Bearing-Seal, Exhaust Joint

    PartNumber: 20695-8J010
    OEM 2003 Nissan Altima Bearing-Seal, Exhaust Joint - 20695-8J010
    Product Specifications
    • Notes: 2.5 Liter
    • Other Names: Catalytic Converter Seal, Front Pipe Seal
    • Item Dimensions: 3.7 x 3.6 x 1.0 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 20695-8H300
    • Part Description: 2003 Nissan Altima Bearing-Seal, Exhaust Joint
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | Base, S, SL | 4 Cyl 2.5 L GAS
    $9.17 MSRP: $12.52
    You Save: $3.35 (27%)
  • Bosal Stainless Steel Exhaust Manifold W Integrated Catalytic Converter for 2003 Nissan Altima - 096-1400

    Bosal® Stainless Steel Exhaust Manifold W Integrated Catalytic Converter for 2003 Nissan Altima

    PartNumber: 096-1400
    Product Specifications
    • Notes: Direct Fit; Not legal for sale in CA. Not legal in NY for vehicles w/CA Emissions.;Not Legal For Sale In CA. Not Legal In NY For Vehicles w/Calif Emissions.
    • CARB Compliant: No
    • Catalytic Converter Air Tube Adaptable: Not Air Tube Kit Adaptable
    • Catalytic Converter Format: Main Catalytic Converter
    • Catalytic Converter Housing Material: Stainless Steel
    • Catalytic Converter Length (in): 19.0
    • Catalytic Converter Oxygen Sensor Location: No Port Location
    • Catalytic Converter Substrate Material: Ceramic
    • Exhaust Component Mount Type: Uses Factory Hangers
    • Exhaust Pipe Inlet Connection Type: Flange or slip fit
    • Exhaust Pipe Outlet Connection Type: Flange or slip fit
    • Fitment: Direct OE Replacement
    • Internet Product Code (IPC): 9AB5BED00EB
    • Item Grade: Standard Replacement
    • Item has MSDS (SDS): N
    • MFG Brand Name: Bosal
    • MFG Model # (Series): 096-1400
    • MFG Name: Bosal
    • Supplier Company Name: Bosal
    • UPC: 623920334644
    • Part Description: 2003 Nissan Altima Stainless Steel Exhaust Manifold W Integrated Catalytic Converter
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | All Trims | 4 Cyl 2.5L
    • 2003 Nissan Altima | Base | 4 Cyl 2.5L
    • 2003 Nissan Altima | S | 4 Cyl 2.5L
    • 2003 Nissan Altima | SL | 4 Cyl 2.5L
    Show More
  • Bosal Premium Load Direct Fit Catalytic Converter And Pipe Assembly for 2003 Nissan Altima - 099-1402

    Bosal® Premium Load Direct Fit Catalytic Converter And Pipe Assembly for 2003 Nissan Altima

    PartNumber: 099-1402
    Product Specifications
    • Notes: Rear Main; Not Legal For Sale In CA. Not Legal In NY For Vehicles w/Calif Emissions.
    • CARB Compliant: No
    • Catalytic Converter Air Tube Adaptable: Not Air Tube Kit Adaptable
    • Catalytic Converter Format: Main Catalytic Converter
    • Catalytic Converter Housing Material: Stainless Steel
    • Catalytic Converter Length (in): 45.0
    • Catalytic Converter Oxygen Sensor Location: No Port Location
    • Catalytic Converter Substrate Material: Ceramic
    • Exhaust Component Mount Type: Uses Factory Hangers
    • Exhaust Pipe Inlet Connection Type: Flange or slip fit
    • Exhaust Pipe Outlet Connection Type: Flange or slip fit
    • Fitment: Direct OE Replacement
    • Internet Product Code (IPC): 5125F72BFC2
    • Item Grade: Standard Replacement
    • Item has MSDS (SDS): N
    • MFG Brand Name: Bosal
    • MFG Model # (Series): 099-1402
    • MFG Name: Bosal
    • Supplier Company Name: Bosal
    • UPC: 623920320517
    • Part Description: 2003 Nissan Altima Premium Load Direct Fit Catalytic Converter And Pipe Assembly
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | Base | 6 Cyl 3.5L
    • 2003 Nissan Altima | S | 6 Cyl 3.5L
    • 2003 Nissan Altima | SL | 6 Cyl 3.5L
    • 2003 Nissan Altima | SE | 6 Cyl 3.5L
    Show More
  • DEC Standard Direct Fit Catalytic Converter for 2003 Nissan Altima - NIS2536

    DEC® Standard Direct Fit Catalytic Converter for 2003 Nissan Altima

    PartNumber: NIS2536
    Product Specifications
    • Notes: Radiator Side (Bank# 2); E.P.A COMPLIANT
    • Part Description: 2003 Nissan Altima Standard Direct Fit Catalytic Converter
    Vehicle Fitment
    • 2003 Nissan Altima | All Trims | 6 Cyl 3.5L
  • DEC Direct Fit Catalytic Converter and Pipe Assembly for 2003 Nissan Altima - NIS2544

    DEC® Direct Fit Catalytic Converter and Pipe Assembly for 2003 Nissan Altima

    PartNumber: NIS2544
    Product Specifications
    • Notes: Y-Pipe w/Flex; E.P.A COMPLIANT
    • Part Description: 2003 Nissan Altima Direct Fit Catalytic Converter and Pipe Assembly
    Vehicle Fitment
    • 2003 Nissan Altima | All Trims | 6 Cyl 3.5L
  • Bosal Direct Fit Catalytic Converter for 2003 Nissan Altima - 099-1430

    Bosal® Direct Fit Catalytic Converter for 2003 Nissan Altima

    PartNumber: 099-1430
    Product Specifications
    • Notes: Radiator Side; Not Legal For Sale In CA. Not Legal In NY For Vehicles w/Calif Emissions.
    • CARB Compliant: No
    • Catalytic Converter Air Tube Adaptable: Not Air Tube Kit Adaptable
    • Catalytic Converter Format: Main Catalytic Converter
    • Catalytic Converter Housing Material: Stainless Steel
    • Catalytic Converter Length (in): 23.0
    • Catalytic Converter Oxygen Sensor Location: No Port Location
    • Catalytic Converter Substrate Material: Ceramic
    • Exhaust Component Mount Type: Uses Factory Hangers
    • Exhaust Pipe Inlet Connection Type: Flange or slip fit
    • Exhaust Pipe Outlet Connection Type: Flange or slip fit
    • Fitment: Direct OE Replacement
    • Internet Product Code (IPC): AD44ADCDCEF
    • Item Grade: Standard Replacement
    • Item has MSDS (SDS): N
    • MFG Brand Name: Bosal
    • MFG Model # (Series): 099-1430
    • MFG Name: Bosal
    • Supplier Company Name: Bosal
    • UPC: 623920318590
    • Part Description: 2003 Nissan Altima Direct Fit Catalytic Converter
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | Base | 6 Cyl 3.5L
    • 2003 Nissan Altima | S | 6 Cyl 3.5L
    • 2003 Nissan Altima | SL | 6 Cyl 3.5L
    • 2003 Nissan Altima | SE | 6 Cyl 3.5L
    Show More
  • Davico Direct Fit Catalytic Converter and Pipe Assembly for 2003 Nissan Altima - 48120

    Davico® Direct Fit Catalytic Converter and Pipe Assembly for 2003 Nissan Altima

    PartNumber: 48120
    Product Specifications
    • Notes: Not legal for use in Calif; Illegal for installation in NY on vehicles equipped w/Calif emission systems; Dealer Alternative
    • Catalytic Converter Body Height: 6"
    • Catalytic Converter Overall Length: 40.5"
    • Catalytic Converter Width: 8"
    • Converter Configuration: Direct Fit
    • Position: Rear
    • Part Description: 2003 Nissan Altima Direct Fit Catalytic Converter and Pipe Assembly
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | All Trims | 4 Cyl 2.5L
  • Bosal Stainless Steel Exhaust Manifold W Integrated Catalytic Converter for 2003 Nissan Altima - 099-1431

    Bosal® Stainless Steel Exhaust Manifold W Integrated Catalytic Converter for 2003 Nissan Altima

    PartNumber: 099-1431
    Product Specifications
    • Notes: Firewall Side; Not Legal For Sale In CA. Not Legal In NY For Vehicles w/Calif Emissions.
    • CARB Compliant: No
    • Catalytic Converter Air Tube Adaptable: Not Air Tube Kit Adaptable
    • Catalytic Converter Format: Main Catalytic Converter
    • Catalytic Converter Housing Material: Stainless Steel
    • Catalytic Converter Length (in): 24.0
    • Catalytic Converter Oxygen Sensor Location: No Port Location
    • Catalytic Converter Substrate Material: Ceramic
    • Exhaust Component Mount Type: Uses Factory Hangers
    • Exhaust Pipe Inlet Connection Type: Flange or slip fit
    • Exhaust Pipe Outlet Connection Type: Flange or slip fit
    • Fitment: Direct OE Replacement
    • Internet Product Code (IPC): 14751738C22
    • Item Grade: Standard Replacement
    • Item has MSDS (SDS): N
    • MFG Brand Name: Bosal
    • MFG Model # (Series): 099-1431
    • MFG Name: Bosal
    • Supplier Company Name: Bosal
    • UPC: 623920318606
    • Part Description: 2003 Nissan Altima Stainless Steel Exhaust Manifold W Integrated Catalytic Converter
    More Info
    Vehicle Fitment
    • 2003 Nissan Altima | Base | 6 Cyl 3.5L
    • 2003 Nissan Altima | S | 6 Cyl 3.5L
    • 2003 Nissan Altima | SL | 6 Cyl 3.5L
    • 2003 Nissan Altima | SE | 6 Cyl 3.5L
    Show More