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Catalytic Converter for 2003 Pontiac Bonneville

We have 17 Items In-stock.

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

$347.74 $450.02 You Save $102.28 (23%)
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Availability: In Stock
Only from APW Rewards
  • Sku#: M66456005
  • 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-193-114
  • Anticipated Ship Out Time: 1-2 Business Days
  • Notes: Inlet/Outlet Size : 2.25in. I.D.
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
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Fits the following 2003 Pontiac Bonneville Submodels

  • 6 Cyl 3.8L | SSEi, SE, SLE
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Magnaflow 50-State Semi-Universal Catalytic Converter - Traditional Converter, Semi-Universal

$347.74 $450.02 You Save $102.28 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: M66456006
  • 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-193-114
  • Anticipated Ship Out Time: 1-2 Business Days
  • Notes: Inlet/Outlet Size : 2.5in. I.D.
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
See more

Fits the following 2003 Pontiac Bonneville Submodels

  • 6 Cyl 3.8L | SSEi, SE, SLE
See more

Magnaflow California Legal Direct-Fit Catalytic Converters

  • California/50-State Legal
  • Easy bolt-on Installation with no cutting, welding or bending required
  • 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 direct-fit 50-State Legal catalytic converters are specifically designed to fit your vehicle with a no-hassle installation – no cutting, welding, or bending required.  Engineered to cut emissions and improve performance.

Magnaflow 50-State Direct-Fit Catalytic Converter - Traditional Converter, Direct Fit

$483.84 $626.14 You Save $142.30 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: M66456010
  • Series: Magnaflow 50-State Direct-Fit
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • E O Number: D-193-114
  • Anticipated Ship Out Time: 1-2 Business Days
  • Notes: Gaskets Included
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
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Fits the following 2003 Pontiac Bonneville Submodels

  • 6 Cyl 3.8L | SSEi, SE, SLE
See more

Eastern - Universal Catalytic Converters (48-State Legal - No CA, No NY)

EASTERN - UNIVERSAL CATALYTIC CONVERTERS (48-STATE LEGAL - NO CA, NO NY)

Eastern's universal catalytic converters are durably designed and powered with NANO technology for highly efficient, long-lasting function. Since 1976, Eastern Catalytic has specialized in engineering world-class catalytic converters for the automotive aftermarket.

  • NANO technology delivers better converter efficiency
  • Brings optimum engine performance
  • Complete range of outlet and inlet diameters
  • Non-directional for ease of installation
Note:
  • 48-state legal - not for sale or use in California or New York; cannot be shipped to California or New York addresses.

Eastern ECO GM Catalytic Converter - Traditional Converter, Semi-Universal

$90.45 $106.73 You Save $16.28 (15%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: EAST99176
  • Series: Eastern ECO GM
  • Type: Traditional Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • 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 Pontiac Bonneville Submodels

  • 6 Cyl 3.8L | SE, SLE
See more

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

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

Eastern's OE replacement catalytic converters are equipped with advanced design elements and NANO technology for maximum performance. Since 1976, Eastern Catalytic has specialized in engineering world-class catalytic converters for the automotive aftermarket.

  • NANO technology provides greater converter efficiency
  • Designed with advanced materials and OE-style flex assemblies and flanges
  • Facilitates optimal engine performance
  • Full range of outlet and inlet diameters
Note:
  • 48-state legal - not for sale or use in New York or California; cannot be shipped to New York or California addresses.

Eastern ECO GM Catalytic Converter - Traditional Converter, Direct Fit

$292.98 $345.72 You Save $52.74 (15%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: EAST50316
  • Series: Eastern ECO GM
  • 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: 64.5 in. overall length
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
See more

Fits the following 2003 Pontiac Bonneville Submodels

  • 6 Cyl 3.8L | SE, SLE
See more
Customer Review: (see review/s)
  • took four bolts off of old converter and cut tailpipe put new one into place slide into tail pipe and tighten bolts and muffler clamp fit perfectly. 35minutes and was done

    posted by: on November 27, 2009

  • view all 3 reviews

Eastern ECO GM Catalytic Converter - Traditional Converter, Direct Fit

$192.86 $227.57 You Save $34.71 (15%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: EAST50433
  • Series: Eastern ECO GM
  • 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: 16 in. overall length
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
See more

Fits the following 2003 Pontiac Bonneville Submodels

  • 6 Cyl 3.8L | SE, SLE, SSEi
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

Best Seller
$172.59 $409.13 You Save $236.54 (58%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: DAV19030
  • 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: 22 in. L x 7 in. W x 4.25 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 Pontiac Bonneville Submodels

  • 6 Cyl 3.8L | SSEi, SE, SLE
See more

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

$179.30 $441.51 You Save $262.21 (59%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: DAV19230
  • 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: 18.25 in. L x 5.75 in. W x 4 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
See more

Fits the following 2003 Pontiac Bonneville Submodels

  • 6 Cyl 3.8L | SE, SLE, SSEi
See more

Davico Ultra Load Center Catalytic Converter - Traditional Converter, Direct Fit

$335.75 $396.19 You Save $60.44 (15%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: DAV49030
  • Location: Center
  • Series: Davico Ultra Load
  • 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
  • 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
See more

Fits the following 2003 Pontiac Bonneville Submodels

  • 6 Cyl 3.8L | SE, SLE, SSEi
See more

More results for 2003 Pontiac Bonneville Catalytic Converter

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

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

    Bosal's OE replacement catalytic converters are made to fit vehicle-specific requirements for backpressure, emissions, sound... (see more)

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