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Walker 55581 Catalytic Converter
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.
| Brand | Walker |
| Part Number | 55581 |
| Position | EPA |
| Mounting Hardware Included | No |
| Universal Or Specific Fit | Specific |
| Grade Type | Regular |
| Body Shape | Round |
| Inlet Inside Diameter | 2.5 |
| Body Height | 4.125 |
| Body Length | 8 |
| Body Width | 4.125 |
| Body Material | Stainless steel |
| Outlet Quantity | 1 |
| California Air Resources Board (CARB) Certified | No |
| Overall Length | 54 |
| Air Tube | No |
| Air Tube Count | No |
| Body Height | 4.125 |
| Body Length | 9.000 |
| Body Material | Stainless steel |
| Body Shape | Round |
| Body Width | 4.125 |
| Converter Quantity | 1 |
| Fitment | Direct fit |
| Inlet 1 Type | 3 bolt welded flange |
| Inlet 2 Inside Diameter | 2.5 |
| Inlet 2 Type | 3 bolt loose flange with spherical flare |
| Inlet Connection Type | Dual |
| Inlet Count | 2 |
| Inlet Quantity | 2 |
| Inlet Type | 3 bolt loose flange with spherical flare |
| Inlet Type | 3 bolt welded flange |
| Max Year Covered | 2003 |
This part fits 2 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2003 | Dodge | Ram 2500 | 5.7L | V8 | N/A | Fits 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 |
| 2003 | Dodge | Ram 3500 | 5.7L | V8 | N/A | Fits 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.