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Catalytic Converter for 2003 Isuzu Ascender

We have 11 Items In-stock. Select your vehicle's Submodel to continue.

Magnaflow California Legal Semi-Universal Catalytic Converter

  • 50-State/California Legal
  • Semi-universal design – cut out your old catalytic converter and weld in the new one
  • Stainless Steel Construction
  • Legendary Magnaflow quality, power, and sound
  • Ceramic, honeycomb catalyst designed for maximum flow and surface area

When you want the best, you want Magnaflow!  These semi-universal 50-State Legal catalytic converters have a catalyst specifically designed for your vehicle – just cut out your old catalytic converter and weld in the new one.  Engineered to cut emissions and improve performance.

Magnaflow 50-State Semi-Universal Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$195.89 $253.51 You Save $57.62 (23%)
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Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 45006
  • Series: Magnaflow 50-State Semi-Universal
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • E O Number: D-193-66, D-193-91
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 16 in. overall length
  • Notes: Inlet/Outlet Size : 2.5in. I.D.
  • Warranty: Magnaflow 5 year / 50,000 Mile Warranty
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Fits the following 2003 Isuzu Ascender Submodels

  • 6 Cyl 4.2L | Base, LS, Limited
  • 8 Cyl 5.3L | Base, LS, Limited
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Customer Review: (see review/s)
  • Had these installed along with two Magnaflow mufflers and the exhaust sounds great, even the engine tem was reduced due to the free flowing exhaust.

    posted by: on September 4, 2009

Magnaflow 50-State Semi-Universal Catalytic Converter - Traditional Converter, Semi-Universal

$201.48 $260.73 You Save $59.25 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 445006
  • Series: Magnaflow 50-State Semi-Universal
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • E O Number: D-193-100
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 16 in. overall length
  • Notes: Oval body; Inlet/Outlet Size : 2.5in. I.D.
  • Warranty: Magnaflow 5 year / 50,000 Mile Warranty
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Fits the following 2003 Isuzu Ascender Submodels

  • 6 Cyl 4.2L | Base, LS, Limited
  • 8 Cyl 5.3L | Base, LS, Limited
See more

Flowmaster 50-State Legal Semi-Universal Catalytic Converter

FLOWMASTER – 50 STATE LEGAL SEMI-UNIVERSAL CATALYTIC CONVERTER

Failed the smog test because of a malfunctioning stock catalytic converter that has come to the end of its life? Don’t panic and send your vehicle off to the junkyard when everything else is running smoothly. Replace that old catalytic converter with a new Flowmaster 50 State Semi-Universal Catalytic Converter and go back in for a retest. Since installing a new converter from any car dealer is exceedingly expensive, using a Flowmaster is a much better alternative. After installing a Flowmaster 50 State Legal Semi-Universal Catalytic Converter, your car, truck or SUV will have a much better chance of passing the smog test and it will not trip check engine lights as well. Flowmaster known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Great for replacing worn out factory original catalytic converters
  • Designed and manufactured in U.S.A.
  • Meticulously engineered internals with the correct precious metals won’t set off check engine lights
  • Mandatory in all states that adopted strict California vehicle emission standards
  • All California Air Resources Board (CARB) requirements are met
  • Catalyst housing is made from stainless steel for longevity
  • Made for a wide selection of popular trucks, SUVs and cars

NOTE: Requires clamps, welding or custom fabrication to install

Flowmaster 50-State Legal Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$208.90 $273.07 You Save $64.17 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Flowmaster 3912024
  • Series: Flowmaster 50-State Legal
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • E O Number: D-280-101
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 12.5 in. L x 7.5 in. W 4.25 in. H
  • Notes: 2.5 in. Inlet/Outlet
  • Warranty: 5-Year Or 50,000-Mile Flowmaster Warranty On Exterior Casings
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Fits the following 2003 Isuzu Ascender Submodels

  • 6 Cyl 4.2L | Base, LS, Limited
  • 8 Cyl 5.3L | Base, LS, Limited
See more

Flowmaster 50-State Legal Catalytic Converter - Traditional Converter, Semi-Universal

$208.90 $273.07 You Save $64.17 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Flowmaster 3912025
  • Series: Flowmaster 50-State Legal
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • E O Number: D-280-101
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 12.5 in. L x 7.5 in. W 4.25 in. H
  • Notes: 2.5 in. Inlet/Outlet
  • Warranty: 5-Year Or 50,000-Mile Flowmaster Warranty On Exterior Casings
See more

Fits the following 2003 Isuzu Ascender Submodels

  • 6 Cyl 4.2L | Base, LS, Limited
  • 8 Cyl 5.3L | Base, LS, Limited
See more

Flowmaster 50-State Legal Catalytic Converter - Traditional Converter, Semi-Universal

$263.34 $344.24 You Save $80.90 (24%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Flowmaster 3910124
  • Series: Flowmaster 50-State Legal
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • E O Number: D-280-101
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 10 in. L x 5 in. W 4.25 in. H
  • Notes: 2.5 in. Inlet/Outlet
  • Warranty: 5-Year Or 50,000-Mile Flowmaster Warranty On Exterior Casings
See more

Fits the following 2003 Isuzu Ascender Submodels

  • 6 Cyl 4.2L | Base, LS, Limited
See more

Flowmaster 50-State Legal Direct-Fit Catalytic Converter

FLOWMASTER – 50 STATE LEGAL DIRECT-FIT CATALYTIC CONVERTERS

Failed the smog test because of a malfunctioning stock catalytic converter that has come to the end of its life? Don’t panic and send your vehicle off to the junkyard when everything else is running smoothly. Replace that old catalytic converter with a new Flowmaster 50 State Legal Direct-Fit Catalytic Converter and go back in for a retest. Since installing a new converter from any car dealer is exceedingly expensive, bolting on a Flowmaster is a much better alternative. After installing a Flowmaster 50 State Legal Direct-Fit Catalytic Converter, your car, truck or SUV will have a much better chance of passing the smog test and it will not trip check engine lights as well. Flowmaster known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Great for replacing worn out factory original catalytic converters
  • Designed and manufactured in U.S.A.
  • Meticulously engineered internals with the correct precious metals won’t set off check engine lights
  • 409S stainless steel mandrel bent housing and tubing
  • Mandatory in all states that adopted strict California vehicle emission standards
  • All California Air Resources Board (CARB) requirements are met
  • Built-in pre and post catalytic converter O2 sensor locations
  • Comes with all necessary hardware
  • Simple to install - just bolts directly on without needing any welding or cutting
  • Made for a wide selection of popular trucks, SUVs and cars

Flowmaster 50-State Legal Direct-Fit Catalytic Converter - Traditional Converter, Direct Fit

$349.00 $456.21 You Save $107.21 (24%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Flowmaster 3010051
  • Series: Flowmaster 50-State Legal Direct-Fit
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • E O Number: D280-101
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-Year Or 50,000-Mile Flowmaster Warranty On Exterior Casings
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Fits the following 2003 Isuzu Ascender Submodels

  • 6 Cyl 4.2L | Base, LS, Limited
See more

Davico - OE Replacement Catalytic Converters (48-State Legal - No CA, No NY)

DAVICO - OE REPLACEMENT CATALYTIC CONVERTERS (48-STATE LEGAL - NO CA, NO NY)

When it comes to catalytic converters, turn to Davico. Davico's line of OE replacement catalytic converters is specifically designed to work like the original unit that came installed on your vehicle, delivering solid performance and an exact fit. Each and every one of Davico's OE replacement catalytic converters is crafted within strict standards.

Davico Exact Fit Center Catalytic Converter - Traditional Converter, Direct Fit

$227.54 $568.70 You Save $341.16 (60%)
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Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Davico 19100
  • Location: Center
  • Series: Davico Exact Fit
  • Type: Traditional Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 50 in. L x 11 in. W x 11.5 in. H
  • Warranty: 2-year or 25,000-mile Davico limited warranty on catalyst emission properties and 5-year or 50,000-mile limited warranty on tube, shell and welds
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Fits the following 2003 Isuzu Ascender Submodels

  • 6 Cyl 4.2L | Base, Limited, LS
See more
Customer Review: (see review/s)
  • I believe that s why my light came back on is that the catylitic converter is only for federal emissions not California emissions

    posted by: on May 19, 2015

Eastern - 50-State Semi-Universal Catalytic Converters

EASTERN – 50-STATE LEGAL SEMI-UNIVERSAL CATALYTIC CONVERTERS

Whip your exhaust system back into shape with the optimum engineering and maximum-flow performance offered by Eastern’s 50-state legal semi-universal catalytic converters. Since 1976, Eastern Catalytic has specialized in engineering world-class catalytic converters for the automotive aftermarket.

  • Semi-universal fit – readily adaptable to suit your specific vehicle
  • CARB-compliant – legal in all 50 states, including New York and California
  • Engineered with NANO technology chemistry for optimum efficiency
  • Designed for maximum flow
  • Thoroughly tested to guarantee secure fit and performance
  • Aluminized and 409 stainless steel construction for superior anti-rust protection
  • Built with full heat shields, both top and bottom (depending on application)

Eastern 50-State Semi-Universal Center Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$202.68 $239.16 You Save $36.48 (15%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Eastern 640003
  • Location: Center
  • Series: Eastern 50-State Semi-Universal
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • E O Number: D-665-17
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
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Fits the following 2003 Isuzu Ascender Submodels

  • 6 Cyl 4.2L | Base, LS, Limited
  • 8 Cyl 5.3L | Base, LS, Limited
See more

Eastern 50-State Semi-Universal Center Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$150.18 $177.21 You Save $27.03 (15%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Eastern 640012
  • Location: Center
  • Series: Eastern 50-State Semi-Universal
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • E O Number: D-665-18
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
See more

Fits the following 2003 Isuzu Ascender Submodels

  • 6 Cyl 4.2L | Base, LS, Limited
  • 8 Cyl 5.3L | Base, LS, Limited
See more

Eastern 50-State Semi-Universal Center Catalytic Converter - Traditional Converter, Semi-Universal

$146.16 $172.47 You Save $26.31 (15%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Eastern 865018
  • Location: Center
  • Series: Eastern 50-State Semi-Universal
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • E O Number: D-665-14
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
See more

Fits the following 2003 Isuzu Ascender Submodels

  • 6 Cyl 4.2L | Base, LS, Limited
See more

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