HomeExhaust > Catalytic ConverterWalker 52503 Catalytic Converter - Right
Part #: 52503

Walker 52503 Catalytic Converter - Right

EPA, Right
11 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
EPA, Right
Fitment: Cadillac, CTS, SRX, and STS
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Overview of Walker EPA Catalytic Converter 52503

The Walker EPA Catalytic Converter 52503 is designed specifically for select Cadillac models from 2004 to 2007. Engineered for direct fit installation, this catalytic converter ensures proper exhaust flow and emission control for your Cadillac CTS, SRX, or STS.

  • Direct fit catalytic converter for Cadillac CTS, SRX, and STS (2004-2007)
  • Constructed with durable stainless steel body
  • Round body shape with dimensions: 3.5" height, 3.5" width, 5.25" length
  • Single inlet and outlet with 2 bolt welded flange connections
  • Regular grade type for standard emission requirements
  • Overall length of 19 inches for precise fitment

Walker EPA Product Line Details

The EPA line from Walker focuses on meeting Environmental Protection Agency standards for emission control without requiring California Air Resources Board (CARB) certification. This product line offers reliable, specific-fit catalytic converters designed to maintain factory emission performance for vehicles like the Cadillac SRX and CTS. The 52503 part number is part of this line, providing a balance of quality and compliance for applicable states.

Product Features and Specifications

This catalytic converter features a stainless steel round body that measures 3.5 inches in height and width, with a length of 5.25 inches. It includes one inlet and one outlet, both equipped with 2 bolt welded flange connections to ensure a secure and leak-free fit. The converter is designed as a direct fit for Cadillac CTS, SRX, and STS models from 2004 through 2007, making it a precise replacement part. The regular grade type construction supports standard emission control requirements without additional air tubes or complex fittings.

Common Applications and Problem Solving

  • Replacement for damaged or clogged catalytic converters on Cadillac CTS, SRX, and STS (2004-2007)
  • Restores proper exhaust flow and reduces harmful emissions
  • Helps resolve check engine light issues related to catalytic converter failure
  • Improves vehicle emission compliance in non-CARB states
  • Addresses exhaust leaks caused by flange or body damage

Installation Notes and Tips

The Walker EPA Catalytic Converter 52503 is designed for direct fit installation, matching factory mounting points and flange connections. It requires a 2 bolt welded flange connection on both inlet and outlet sides. Mounting hardware is not included, so ensure you have the necessary bolts and gaskets for installation. Professional installation is recommended to verify proper sealing and alignment to avoid exhaust leaks.

Quality Assurance and Warranty

Walker catalytic converters are manufactured with stainless steel bodies to resist corrosion and withstand high temperatures. While this EPA line catalytic converter is not CARB certified, it meets EPA emission standards for the specified Cadillac models. Warranty details should be confirmed with the distributor or manufacturer, as coverage may vary.

BrandWalker
Part Number52503
PositionEPA, Right
Mounting Hardware IncludedNo
Universal Or Specific FitSpecific
Grade TypeRegular
Body ShapeRound
Body Height3.5
Body Length5.25
Body Width3.5
Inlet Quantity1
Body MaterialStainless steel
Outlet Quantity1
California Air Resources Board (CARB) CertifiedNo
Overall Length19
Air TubeNo
Air Tube CountNo
Body Height3.500
Body Length5.250
Body MaterialStainless steel
Body ShapeRound
Body Width3.500
Converter Quantity1
FitmentDirect fit
Inlet 1 Type2 bolt welded flange
Inlet Connection Type2 bolt welded flange
Inlet Count1
Inlet Type2 bolt welded flange
Max Year Covered2007
Min Year Covered2004
Most Popular Make / ModelCadillac srx
Most Popular Year2004
Outlet 1 Type2 bolt welded flange

This part fits 11 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2008CadillacSTS3.6LV6RightFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Ultra Direct Fit Type; EPA
2007CadillacCTS3.6LV6RightEPA
2007CadillacSRX3.6LV6RightFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Ultra Direct Fit Type; EPA
2007CadillacSTS3.6LV6RightFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Ultra Direct Fit Type; EPA
2006CadillacCTS3.6LV6RightEPA
2006CadillacSRX3.6LV6RightFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Ultra Direct Fit Type; EPA
2006CadillacSTS3.6LV6RightFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Ultra Direct Fit Type; EPA
2005CadillacCTS3.6LV6RightEPA
2005CadillacSRX3.6LV6RightFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Ultra Direct Fit Type; EPA
2005CadillacSTS3.6LV6RightFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Ultra Direct Fit Type; EPA
2004CadillacSRX3.6LV6RightFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Ultra Direct Fit Type; EPA

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

079-523724403249314619498855044451617642131

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.