HomeExhaust > Catalytic ConverterWalker 55581 Catalytic Converter
Part #: 55581

Walker 55581 Catalytic Converter

EPA
⚙️ 2 vehicles fit this part
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Select your vehicle to confirm fitment
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$462.37Free Shipping
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦EPA
🚗Fitment: Dodge, Ram 2500 and Ram 3500
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Overview of Walker EPA Catalytic Converter 55581

The Walker EPA Catalytic Converter 55581 is designed specifically for Dodge Ram 2500 and Ram 3500 models up to the year 2003. This direct fit catalytic converter ensures proper exhaust flow and emission control with its durable stainless steel construction and precise fitment.

  • Direct fit for Dodge Ram 2500 and Ram 3500 (up to 2003)
  • Constructed from stainless steel for corrosion resistance
  • Round body shape with dimensions: 9" length, 4.125" width and height
  • Dual inlet design with 3 bolt welded and loose flanges
  • Inlet and outlet inside diameter of 2.5 inches
  • Single outlet configuration
  • Regular grade type catalytic converter
  • Not CARB certified

Detailed Product Description

The Walker EPA catalytic converter part number 55581 features a round stainless steel body measuring 9 inches in length and 4.125 inches in both width and height. It is engineered with a dual inlet system, including one 3 bolt welded flange and one 3 bolt loose flange with spherical flare, both with an inside diameter of 2.5 inches. The converter has a single outlet with a 2.5-inch inside diameter, designed to maintain optimal exhaust flow and reduce emissions effectively. This specific fit catalytic converter is intended for direct replacement on Dodge Ram 2500 and Ram 3500 trucks manufactured up to 2003, ensuring compatibility and ease of installation.

About the Walker EPA Product Line

The EPA line from Walker focuses on meeting Environmental Protection Agency standards for emission control without CARB certification. These converters are designed to provide reliable performance and durability for vehicles requiring EPA-compliant parts. The 55581 model fits within this line by offering a direct fit solution for specific Dodge Ram trucks, balancing emission reduction and vehicle compatibility.

Common Applications and Problem Solving

  • Replacement for damaged or clogged catalytic converters on Dodge Ram 2500 and 3500
  • Helps resolve exhaust leaks caused by cracked or corroded converter bodies
  • Restores proper emission control to pass state inspections (non-CARB states)
  • Improves engine performance by ensuring efficient exhaust flow
  • Reduces harmful exhaust emissions to meet EPA standards

Installation Notes and Tips

This catalytic converter is a direct fit replacement designed for easy installation on compatible Dodge Ram 2500 and Ram 3500 models. It requires no modification to existing exhaust components. Note that mounting hardware is not included, so retain or source necessary bolts and gaskets separately. Proper torque on the 3 bolt flanges is essential to prevent exhaust leaks.

Quality Assurance and Warranty

Walker manufactures this catalytic converter with stainless steel materials to resist corrosion and extend service life. While this part is not CARB certified, it meets EPA emission standards for applicable vehicles. Warranty details should be confirmed with the distributor or manufacturer, as they may vary by region and application.

BrandWalker
Part Number55581
PositionEPA
Mounting Hardware IncludedNo
Universal Or Specific FitSpecific
Grade TypeRegular
Body ShapeRound
Inlet Inside Diameter2.5
Body Height4.125
Body Length8
Body Width4.125
Body MaterialStainless steel
Outlet Quantity1
California Air Resources Board (CARB) CertifiedNo
Overall Length54
Air TubeNo
Air Tube CountNo
Body Height4.125
Body Length9.000
Body MaterialStainless steel
Body ShapeRound
Body Width4.125
Converter Quantity1
FitmentDirect fit
Inlet 1 Type3 bolt welded flange
Inlet 2 Inside Diameter2.5
Inlet 2 Type3 bolt loose flange with spherical flare
Inlet Connection TypeDual
Inlet Count2
Inlet Quantity2
Inlet Type3 bolt loose flange with spherical flare
Inlet Type3 bolt welded flange
Max Year Covered2003

This part fits 2 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2003DodgeRam 25005.7LV8N/AFits 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
2003DodgeRam 35005.7LV8N/AFits 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:

20406244614965953796645807

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