{
"lazyNodes": false,
"abFitnotesFlag": false,
"abCrawlReviews": true,
"productOptionsCookie": false,
"orderDelayFlag": false,
"skipSessionCookie": false,
"covidMessage": false,
"fullTitleCookie": false,
"nrLoggerCookie": true,
"checkoutReviewCookie": false,
"productOptionSeqCookie": false,
"maintenanceFlag": false,
"bufferETACookie": false,
"multiShippingDiscountFlag": false,
"newFitmentFlag": false,
"surveyOptInFlag": true,
"crossSellFlag": false,
"skuMappingFlag": false,
"paySplitCookie": false,
"callDisableFlag": true,
"zipPaymentFlag": "c",
"hassleFreeReturn": true,
"lifetimeReplacement": true,
"cpn_off": false
}Need help?Chat with us
2003 Toyota Sienna
2003 Toyota Sienna Catalytic Converters
Refine by:
Shop Catalog
Showing 1 - 15 of 61 results
Display item:
15
30
45
Sort by:
Part Number: REPT960324
Guaranteed to Fit
$231.89
Vehicle Fitment
- 2003 Toyota Sienna CE 6 Cyl 3.0L California Emissions, Radiator Side
- 2003 Toyota Sienna XLE 6 Cyl 3.0L California Emissions, Radiator Side
- 2003 Toyota Sienna LE 6 Cyl 3.0L California Emissions, Radiator Side
Product Details
Location : Front, Driver SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : Manifold Converter; 12 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Manifold ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEPA : N/TB6000/501-405Gasket Included : With GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile Evan Fischer limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :
WARNING: 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.
Part Number: REPT960305
Guaranteed to Fit
$261.99
Vehicle Fitment
- 2003 Toyota Sienna XLE 6 Cyl 3.0L With 36 in. Overall Length
- 2003 Toyota Sienna CE 6 Cyl 3.0L With 36 in. Overall Length
- 2003 Toyota Sienna LE 6 Cyl 3.0L With 36 in. Overall Length
Product Details
Location : CenterEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 72 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEPA : N/TB6000/64805NNGasket Included : Without GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile Evan Fischer limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :
WARNING: 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.
Part Number: DAV18288
Guaranteed to Fit
$272.49
Vehicle Fitment
- 2003 Toyota Sienna CE 6 Cyl 3.0L Eng Des: 1MZ-FE, With California Emission; Vehicles With 3 Converter System
- 2003 Toyota Sienna XLE 6 Cyl 3.0L Eng Des: 1MZ-FE, With California Emission; Vehicles With 3 Converter System
- 2003 Toyota Sienna LE 6 Cyl 3.0L Eng Des: 1MZ-FE, With California Emission; Vehicles With 3 Converter System
Product Details
Location : Front, Driver SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 14.75 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Manifold ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 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: 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.
Part Number: DAV18025
Guaranteed to Fit
$308.99
Vehicle Fitment
- 2003 Toyota Sienna XLE 6 Cyl 3.0L Vehicles With 3 Converter System
- 2003 Toyota Sienna CE 6 Cyl 3.0L Vehicles With 3 Converter System
- 2003 Toyota Sienna LE 6 Cyl 3.0L Vehicles With 3 Converter System
Product Details
Location : RearEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : Without air tube port provision; 35.25 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 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: 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.
Part Number: DAV16139
Guaranteed to Fit
$417.49
Vehicle Fitment
- 2003 Toyota Sienna XLE 6 Cyl 3.0L Vehicles With 3 Converter System
- 2003 Toyota Sienna CE 6 Cyl 3.0L Vehicles With 3 Converter System
- 2003 Toyota Sienna LE 6 Cyl 3.0L Vehicles With 3 Converter System
Product Details
Location : FrontEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 36 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 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: 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.
Part Number: DAV48025
Guaranteed to Fit
$488.99
Vehicle Fitment
- 2003 Toyota Sienna XLE 6 Cyl 3.0L Vehicles With 3 Converter System
- 2003 Toyota Sienna CE 6 Cyl 3.0L Vehicles With 3 Converter System
- 2003 Toyota Sienna LE 6 Cyl 3.0L Vehicles With 3 Converter System
Product Details
Location : RearEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : With air tube port provision; 35.25 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 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: 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.
Part Number: DAV122281
Guaranteed to Fit
$649.99
Vehicle Fitment
- 2003 Toyota Sienna XLE 6 Cyl 3.0L Efn: 3Tyxt03.0Ffp; Emission Std: LEV1 LEV; Vehicle Class: Ldt2
- 2003 Toyota Sienna CE 6 Cyl 3.0L Efn: 3Tyxt03.0Ffp; Emission Std: LEV1 LEV; Vehicle Class: Ldt2
- 2003 Toyota Sienna LE 6 Cyl 3.0L Efn: 3Tyxt03.0Ffp; Emission Std: LEV1 LEV; Vehicle Class: Ldt2
Product Details
Location : Front, Passenger SideEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 9 in. W x 10.5 in. H; 36 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-709Gasket Included : With GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 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: 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.
Part Number: DAV124430
Guaranteed to Fit
$697.49
Vehicle Fitment
- 2003 Toyota Sienna XLE 6 Cyl 3.0L Eng Des: 1MZ-FE, Radiator Side; Manifold Converter - Radiator Side; With California Emission; Efn: 3Tyxt03.0Ffp; Emission Std: LEV1 LEV; Vehicle Class: Ldt2
- 2003 Toyota Sienna CE 6 Cyl 3.0L Eng Des: 1MZ-FE, Radiator Side; Manifold Converter - Radiator Side; With California Emission; Efn: 3Tyxt03.0Ffp; Emission Std: LEV1 LEV; Vehicle Class: Ldt2
- 2003 Toyota Sienna LE 6 Cyl 3.0L Eng Des: 1MZ-FE, Radiator Side; Manifold Converter - Radiator Side; With California Emission; Efn: 3Tyxt03.0Ffp; Emission Std: LEV1 LEV; Vehicle Class: Ldt2
Product Details
Location : Front, Driver SideEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 6.5 in. W x 11.5 in. H; 14.75 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-709Gasket Included : With GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 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: 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.
Part Number: DAV126168
Guaranteed to Fit
$732.49
Vehicle Fitment
- 2003 Toyota Sienna XLE 6 Cyl 3.0L Efn: 3Tyxt03.0Ffp; Emission Std: LEV1 LEV; Vehicle Class: Ldt2; Used With 16139
- 2003 Toyota Sienna CE 6 Cyl 3.0L Efn: 3Tyxt03.0Ffp; Emission Std: LEV1 LEV; Vehicle Class: Ldt2; Used With 16139
- 2003 Toyota Sienna LE 6 Cyl 3.0L Efn: 3Tyxt03.0Ffp; Emission Std: LEV1 LEV; Vehicle Class: Ldt2; Used With 16139
Product Details
Location : RearEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 9.25 in. W x 4.5 in. H; 35.25 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-709Gasket Included : With GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 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: 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.
Part Number: M6651205
Guaranteed to Fit
$194.00
Vehicle Fitment
- 2003 Toyota Sienna XLE 6 Cyl 3.0L Cutting And Welding Required
- 2003 Toyota Sienna CE 6 Cyl 3.0L Cutting And Welding Required
- 2003 Toyota Sienna LE 6 Cyl 3.0L Cutting And Welding Required
Product Details
Location : RearEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 2.25 in. Inlet/Outlet; 13 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketWarranty : Magnaflow 5 year / 50,000 Mile Limited WarrantyReturns Policy : NON-RETURNABLEProp 65 Warning :
WARNING: 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.
Part Number: M6651641
Guaranteed to Fit
$467.00
Vehicle Fitment
- 2003 Toyota Sienna CE 6 Cyl 3.0L
- 2003 Toyota Sienna XLE 6 Cyl 3.0L
- 2003 Toyota Sienna LE 6 Cyl 3.0L
Product Details
Location : FrontEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : Exhaust Manifold with Integrated Catalytic Converter OEM GRADE Federal (Exc.CA); 12.75 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Manifold ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : Magnaflow 25,000 Mile Limited WarrantyProp 65 Warning :
WARNING: 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.
Part Number: M6649932
Guaranteed to Fit
$489.00
Vehicle Fitment
- 2003 Toyota Sienna XLE 6 Cyl 3.0L
- 2003 Toyota Sienna CE 6 Cyl 3.0L
- 2003 Toyota Sienna LE 6 Cyl 3.0L
Product Details
Location : RearEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 33.75 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : Magnaflow 25,000 Mile Limited WarrantyProp 65 Warning :
WARNING: 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.
Part Number: M6623136
Guaranteed to Fit
$612.00
Vehicle Fitment
- 2003 Toyota Sienna XLE 6 Cyl 3.0L
- 2003 Toyota Sienna CE 6 Cyl 3.0L
- 2003 Toyota Sienna LE 6 Cyl 3.0L
Product Details
Location : FrontEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 36.75 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : Magnaflow 25,000 Mile Limited WarrantyProp 65 Warning :
WARNING: 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.
Part Number: M66447207
Guaranteed to Fit
$900.00
Vehicle Fitment
- 2003 Toyota Sienna XLE 6 Cyl 3.0L EO# D-193-103; Eng Fam No: 3Tyxt03.0Ffp
- 2003 Toyota Sienna CE 6 Cyl 3.0L EO# D-193-103; Eng Fam No: 3Tyxt03.0Ffp
- 2003 Toyota Sienna LE 6 Cyl 3.0L EO# D-193-103; Eng Fam No: 3Tyxt03.0Ffp
Product Details
Location : RearEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 35.13 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-103Gasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Magnaflow limited warrantyProp 65 Warning :
WARNING: 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.
Part Number: M66447160
Guaranteed to Fit
$1,065.00
Vehicle Fitment
- 2003 Toyota Sienna XLE 6 Cyl 3.0L EO# D-193-103; Eng Fam No: 3Tyxt03.0Ffp
- 2003 Toyota Sienna CE 6 Cyl 3.0L EO# D-193-103; Eng Fam No: 3Tyxt03.0Ffp
- 2003 Toyota Sienna LE 6 Cyl 3.0L EO# D-193-103; Eng Fam No: 3Tyxt03.0Ffp
Product Details
Location : FrontEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : (1) Converter Quantity; 2 in. Main Piping Diameter; 6.63 in. Body Length x 4 in. Body Width x 4 in. Body Height; 2 in. ID x 2.38 in. OD; Round Body Shape; Spun Body Type; Bolt-On Inlet and Outlet Attachment; Stainless Steel Material; Includes Gasket; 36.75 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-103Gasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Magnaflow limited warrantyProp 65 Warning :
WARNING: 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.
Page 1 of 5 | Showing 1 - 15 of 61 results
Top Rated Products
Popular Products
FlowmasterNo Returns Accepted -Catalytic ConverterManufacturer #2250220
( Reviews) Questions, Answers
Flowmaster Catalytic Converter
Replace your old and worn-out catalytic converters with the help of Flowmaster. Flowmaster uses cutting-edge industrial design and manufacturing technique to produce a catalytic converter that meets or even exceeds the highest...
WalkerNo Returns Accepted - Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal, Semi-Universal (Welding Required)Manufacturer #81810
( Reviews) Questions, Answers
CARB AND FEDERAL EPA STANDARDS, 50-STATE LEGAL SEMI-UNIVERSAL (WELDING REQUIRED) WALKER CATALYTIC CONVERTER
Walker's semi-universal catalytic converter features a top-quality stainless steel design with thicker flanges, oxygen sensor fittings, heat-shield...
CatcoFront, Driver Side Catalytic Converter, 6, 3.0 Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Manufacturer #1076
( Reviews) Questions, Answers
FEDERAL EPA STANDARD, 46-STATE LEGAL (CANNOT SHIP TO OR BE USED IN VEHICLES ORIGINALLY PURCHASED IN CA, CO, NY OR ME) DIRECT FIT CATCO CATALYTIC CONVERTER
If a clogged or damaged converter’s got your emissions system on the fritz, trust CATCO’s direct fit c...
MagnaflowNo Returns Accepted - Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be used in vehicles originally purchased in CA, CO, NY or ME), Semi-Universal (Welding Required)Manufacturer #51205
( Reviews) Questions, Answers
FEDERAL EPA STANDARD, 46-STATE LEGAL (CANNOT SHIP TO OR BE USED IN VEHICLES ORIGINALLY PURCHASED IN CA, CO, NY OR ME) SEMI-UNIVERSAL (WELDING REQUIRED) MAGNAFLOW CATALYTIC CONVERTER
Meticulously constructed with premium stainless steel, MagnaFlow’s catal...
AP ExhaustRear Catalytic Converter, 6, 3.0 Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Manufacturer #645401
( Reviews) Questions, Answers
FEDERAL EPA STANDARD, 46-STATE LEGAL (CANNOT SHIP TO OR BE USED IN VEHICLES ORIGINALLY PURCHASED IN CA, CO, NY OR ME) DIRECT FIT AP EXHAUST CATALYTIC CONVERTER
The AP Exhaust catalytic converter has an eco-friendly and energy-efficient design to support maximum pollu...
Helpful Automotive Resources
P0430 Code: Catalyst System Efficiency Below Threshold (Bank 2)In most cases, a vehicle with an inefficient catalytic converter will continue to run just fine. But if the converter is obstructed internally, it can cause poor engine performance and may even damage the engine in the long run.
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3Bank 1 is the side of the engine where the #1 cylinder is located. P0042 code is set when your car’s PCM determines a potential problem with the heater element circuit of the oxygen sensor.
Can You Drive Without a Catalytic Converter?Technically, yes. Older cars ran just fine before catalytic converters became commonplace in the 1970s. So, if your question is whether your car will run without one, then it most certainly will. But the other question you should be asking is—should you risk it?
Removing or disabling the catalytic converter could
P0316 Code: Engine Misfire Detected on Startup (First 1000 Revolutions)The PCM may disable the misfiring cylinder or cylinders in order to prevent further damage to the engine. Code P0316 is often listed in addition to one or more of the P0300 series codes that are associated with the misfiring cylinder/s.
P0134: O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)The Bank 1 portion of the code refers to the side of the engine with the number one cylinder. Sensor 1 refers to the upstream O2 sensor.
How to Tell If the Catalytic Converter is CloggedA clogged catalytic converter will present symptoms, while a chemically failed cat con that’s not clogged typically just illuminates the check engine light or malfunction indicator lamp (MIL). Also, if the cat con that just fails chemically but doesn’t clog is not the light-off cat con (the cat con closest