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Catalytic Converter for 2003 Infiniti M45

We have 6 Items In-stock. Select your vehicle's Submodel to continue.

Evan Fischer 48-State Legal (No CA and NY) Catalytic Converter

This Evan Fischer 48-State Legal (No CA and NY) Direct Fit Catalytic Converter is manufactured from high quality and durable stainless steel catalytic case, 16-gauge aluminized steel tubes, and heat shield for long lasting durability and better protection for your vehicle. It also features honeycomb catalyst that has maximum surface area flow. OBD-II and EPA compliant catalytic converter; It is a high quality aftermarket replacement for the OEM catalytic converter. Designed for easy installation - it requires no cutting or welding!

Evan Fischer also offers comprehensive manifold converter assemblies for newer vehicle models!

  • OBD-II And EPA compliant catalytic converter
  • Requires NO cutting or welding
  • Honeycomb catalyst with maximum surface area flow
  • Covered by 5-year or 50,000-mile limited warranty
  • Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses

Evan Fischer Rear Catalytic Converter - Traditional Converter, Direct Fit

Best Seller
$328.68 $560.15 You Save $231.47 (41%)
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Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Evan Fischer REPI960307
  • Location: Rear
  • 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: 5-year or 50,000-mile limited warranty
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Fits the following 2003 Infiniti M45 Submodels

  • 8 Cyl 4.5L | Base
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Benchmark - OE Replacement Catalytic Converters (48-State Legal - No CA, No NY)

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

Benchmark's OE replacement catalytic converters set the industry standard in terms of fitment and durability. Their performance is closely monitored and backed by Benchmark's emissions laboratory, ensuring quality loadings that eliminate OBDII issues caused by many universal catalytic converters.

Notes:

  • 48-state legal - cannot be shipped to New York or California; not for sale or use in New York or California.

Benchmark Driver Side Catalytic Converter - Manifold Converter, Direct Fit

$558.33 $1,675.00 You Save $1,116.67 (67%)
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Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Benchmark 4522D
  • Location: Driver Side
  • Type: Manifold 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: 5-year or 50,000-mile Benchmark limited warranty
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Fits the following 2003 Infiniti M45 Submodels

  • 8 Cyl 4.5L | Base
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Benchmark Center Catalytic Converter - Traditional Converter, Direct Fit

$575.00 $1,725.00 You Save $1,150.00 (67%)
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Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Benchmark 4522
  • Location: Center
  • 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
  • Replaces OE Number: 20020AR21A, 20020CR91A
  • Warranty: 5-year or 50,000-mile Benchmark limited warranty
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Fits the following 2003 Infiniti M45 Submodels

  • 8 Cyl 4.5L | Base
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Benchmark Passenger Side Catalytic Converter - Manifold Converter, Direct Fit

$558.33 $1,675.00 You Save $1,116.67 (67%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Benchmark 4522P
  • Location: Passenger Side
  • Type: Manifold 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: 5-year or 50,000-mile Benchmark limited warranty
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Fits the following 2003 Infiniti M45 Submodels

  • 8 Cyl 4.5L | Base
See more

Benchmark Catalytic Converter (50-State Legal)

Benchmark Catalytic Converters

The Benchmark catalytic converters are known as the leader in making the industry's best catalytic converters. Known to have the quality that you can count on, the Benchmark catalytic converter's performance results are continually tracked by the brand's emission laboratories, guaranteeing top-class loadings that effectively eliminate OBDII issues that plague universal catalysts.

Benchmark Center Catalytic Converter - Traditional Converter, Direct Fit

$598.33 $1,795.00 You Save $1,196.67 (67%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Benchmark 94522
  • Location: Center
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • E O Number: D-562-64
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-year or 50,000-mile Benchmark limited warranty
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Fits the following 2003 Infiniti M45 Submodels

  • 8 Cyl 4.5L | Base
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