HomeExhaust > Catalytic ConverterWalker 16552 Catalytic Converter - Left
Part #: 16552

Walker 16552 Catalytic Converter - Left

EPA, Left
⚙️ 2 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦EPA, Left
🚗Fitment: Ford, Expedition
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Overview of Walker EPA Catalytic Converter 16552

The Walker EPA Catalytic Converter 16552 is designed specifically for Ford Expedition models from 2003 to 2004. This direct fit catalytic converter ensures proper exhaust flow and emission control with its stainless steel construction and precise dimensions.

  • Direct fit for 2003-2004 Ford Expedition
  • Constructed with durable stainless steel body
  • Standard oval body shape measuring 8" length, 7" width, and 4" height
  • Single inlet and outlet with 2.5" outside diameter inlet flange
  • 2 bolt loose flange with spherical flare inlet connection
  • Converter positioned on the left-hand under floor side
  • Part number 16552 from Walker's EPA product line

Detailed Product Features and Specifications

This catalytic converter features a stainless steel body designed for longevity and resistance to corrosion. The standard oval shape with dimensions of 8 inches in length, 7 inches in width, and 4 inches in height provides a precise fit for the specified Ford Expedition models. It includes one inlet and one outlet, both designed for a 2.5-inch outside diameter connection using a 2 bolt loose flange with a spherical flare, ensuring a secure and leak-free installation. The converter is positioned on the left-hand side under the floor, matching the original equipment location for a direct fit replacement.

About the Walker EPA Product Line

The Walker EPA product line focuses on providing catalytic converters that meet Environmental Protection Agency (EPA) standards for emissions control. While this part is not California Air Resources Board (CARB) certified, it is engineered to maintain compliance with federal emissions regulations. The EPA line balances quality materials and fitment accuracy to support emission system integrity on specific vehicle applications like the Ford Expedition.

Common Applications and Problem Resolution

  • Replacement for damaged or clogged catalytic converters on 2003-2004 Ford Expedition
  • Restores proper exhaust flow and reduces harmful emissions
  • Addresses check engine light issues related to catalytic converter failure
  • Helps resolve poor engine performance caused by exhaust restrictions
  • Prevents exhaust leaks and associated noise from faulty converter connections

Installation Notes and Tips

This catalytic converter is designed for direct fit installation on compatible Ford Expedition models, minimizing modification requirements. Ensure the vehicle is safely lifted and cooled before beginning installation. Verify the inlet flange type and dimensions match the existing exhaust system to avoid fitment issues. Proper torque on the 2 bolt loose flange connections is essential to prevent exhaust leaks. It is recommended to inspect surrounding exhaust components during installation for wear or damage.

Quality Assurance and Warranty

Walker manufactures this catalytic converter with stainless steel materials to provide durability and corrosion resistance. The part number 16552 is backed by Walker's quality standards, although specific warranty details should be confirmed with the supplier or manufacturer documentation. This product is engineered to meet EPA emissions requirements for the specified Ford Expedition models, supporting regulatory compliance and vehicle performance.

BrandWalker
Part Number16552
PositionEPA, Left
Mounting Hardware IncludedYes
Universal Or Specific FitSpecific
Grade TypeRegular
Body Height4
Body Length8
Body Width7
Inlet Quantity1
Body MaterialStainless steel
Outlet Quantity1
California Air Resources Board (CARB) CertifiedNo
Overall Length36
Air TubeNo
Air Tube CountNo
Body Height4.000
Body Length8.000
Body MaterialStainless steel
Body ShapeOval
Body ShapeStandard oval
Body Width7.000
Converter PositionLh under floor
Converter Quantity2
FitmentDirect fit
Inlet 1 Type2 bolt loose flange with spherical flare
Inlet Connection Type2 bolt loose flange
Inlet Count1
Inlet Diameter 12.500
Inlet Diameter DesignationOutside diameter
Inlet Type2 bolt loose flange with spherical flare
Max Year Covered2004
Min Year Covered2003

This part fits 2 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2004FordExpedition4.6LV8LeftFits 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
2003FordExpedition4.6LV8LeftFits 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:

079-40602444030456496056454339191

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