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Walker 70401 Catalytic Converter - Right
Overview of Walker EPA Catalytic Converter 70401
The Walker EPA Catalytic Converter 70401 is designed specifically for Ford B4000 and Mazda Ranger models. Engineered with a stainless steel body and ceramic substrate, this catalytic converter ensures reliable exhaust emission control tailored to your vehicle's specifications.
- Specific fit for Ford B4000 and Mazda Ranger
- Stainless steel body material for durability
- Standard oval body shape with dimensions: 10" length, 6.12" width, 4.25" height
- Dual inlet design with 2.5" inside diameter each
- Single outlet with 2.25" outside diameter
- Oxygen sensor locations pre-catalyst and midbed for accurate emissions monitoring
- 2 bolt welded and loose flange inlet/outlet types for secure mounting
- Ceramic substrate for effective catalytic conversion
Detailed Product Description
The Walker EPA 70401 catalytic converter is a specific-fit exhaust component engineered for the Ford B4000 and Mazda Ranger. It features a stainless steel body constructed in a standard oval shape, measuring 10 inches in length, 6.12 inches in width, and 4.25 inches in height. The converter includes two inlets, each with a 2.5-inch inside diameter, utilizing a combination of 2 bolt welded and loose flanges with spherical flare for precise installation. The single outlet has a 2.25-inch outside diameter with a 2 bolt welded flange. This part incorporates a ceramic substrate designed to facilitate efficient catalytic reactions, reducing harmful emissions. Oxygen sensors are positioned both pre-catalyst and midbed to ensure optimal engine management and emissions control.
Walker EPA Product Line Information
The EPA line from Walker focuses on meeting environmental standards with components designed to provide reliable emissions control. This catalytic converter aligns with the EPA product line's goal of delivering specific-fit parts that maintain vehicle performance while addressing exhaust emissions. Although this part is not CARB certified, it is engineered to meet regular grade requirements for emission control in applicable vehicles.
Common Applications and Issues Addressed
- Replacement for damaged or clogged catalytic converters on Ford B4000 and Mazda Ranger
- Restores proper exhaust flow and reduces harmful emissions
- Helps resolve check engine light issues related to catalytic converter efficiency
- Improves oxygen sensor readings by providing accurate pre-catalyst and midbed sensor locations
- Addresses exhaust leaks caused by flange or body damage
Installation Notes and Tips
- Designed for specific fitment; verify compatibility with Ford B4000 or Mazda Ranger before installation
- Mounting hardware is not included; use existing or purchase separately
- Ensure oxygen sensors are properly reinstalled at pre-catalyst and midbed locations
- Check flange surfaces for damage and clean before mounting to prevent leaks
- Professional installation recommended to maintain exhaust system integrity
Quality Assurance and Warranty
Walker catalytic converters are manufactured with durable stainless steel and ceramic substrates to provide consistent performance. While this part is not CARB certified, it meets regular grade standards for emissions control. Warranty details should be confirmed with the supplier or manufacturer, as they may vary based on application and region.
| Brand | Walker |
| Part Number | 70401 |
| Position | EPA, Right |
| Mounting Hardware Included | No |
| Universal Or Specific Fit | Specific |
| Grade Type | Regular |
| Inlet Inside Diameter | 2.5 |
| Body Height | 4.25 |
| Body Length | 10 |
| Body Width | 6.12 |
| Body Material | Stainless steel |
| Outlet Quantity | 1 |
| California Air Resources Board (CARB) Certified | No |
| Overall Length | 47.875 |
| Air Tube | No |
| Air Tube Count | No |
| Body Shape | Standard oval |
| Converter Quantity | 1 |
| Inlet 1 Type | 2 bolt welded flange |
| Inlet 2 Inside Diameter | 2.5 |
| Inlet 2 Type | 2 bolt loose flange with spherical flare |
| Inlet Quantity | 2 |
| Inlet Type | 2 bolt loose flange with spherical flare |
| Inlet Type | 2 bolt welded flange |
| Outlet 1 Outside Diameter | 2.25 |
| Outlet 1 Type | 2 bolt welded flange |
| Outlet Outside Diameter | 2.25 |
| Outlet Type | 2 bolt welded flange |
| Oxygen Sensor Location | Pre catalyst and midbed |
| Substrate Material | Ceramic |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2011 | Ford | Ranger | 4.0L | V6 | Right | 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; Additional part(s) needed to complete installation - 31534 and 31372; Ultra Direct Fit Type; EPA |
| 2010 | Ford | Ranger | 4.0L | V6 | Right | 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; Additional part(s) needed to complete installation - 31534 and 31372; Ultra Direct Fit Type; EPA |
| 2009 | Ford | Ranger | 4.0L | V6 | Right | 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; Additional part(s) needed to complete installation - 31534 and 31372; Ultra Direct Fit Type; EPA |
| 2009 | Mazda | B4000 | 4.0L | V6 | Right | 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; Additional part(s) needed to complete installation - 31534 and 31372; Ultra Direct Fit Type; EPA |
| 2008 | Ford | Ranger | 4.0L | V6 | Right | 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; Additional part(s) needed to complete installation - 31534 and 31372; Ultra Direct Fit Type; EPA |
| 2008 | Mazda | B4000 | 4.0L | V6 | Right | 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; Additional part(s) needed to complete installation - 31534 and 31372; Ultra Direct Fit Type; EPA |
| 2007 | Ford | Ranger | 4.0L | V6 | Right | 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; Additional part(s) needed to complete installation - 31534 and 31372; Ultra Direct Fit Type; EPA |
| 2007 | Mazda | B4000 | 4.0L | V6 | Right | with Federal Emission System; 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; Additional part(s) needed to complete installation - 31534 and 31372; 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.