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Walker 55708 Catalytic Converter - Rear
| Brand | Walker 55708 |
|---|---|
| Position | Rear |
| Mounting Hardware Included | No |
| Universal Or Specific Fit | Specific |
| Grade Type | Regular |
| Body Shape | Round |
| Body Height | 4 |
| Body Length | 8 |
| Body Width | 4 |
| Inlet Quantity | 1 |
| Body Material | Stainless steel |
| Outlet Quantity | 1 |
| California Air Resources Board (CARB) Certified | No |
| Overall Length | 59 |
| Air Tube | No |
| Air Tube Count | No |
| Converter Quantity | 1 |
| Inlet 1 Type | 3 bolt welded flange |
| Inlet Type | 3 bolt welded flange |
| Outlet 1 Type | 2 bolt welded flange |
| Outlet Type | 2 bolt welded flange |
| Oxygen Sensor Location | No port location |
| Substrate Material | Ceramic |
| Product line | EPA |
| Fits | Subaru · 10 vehicles |
EPA-compliant design. Built for emissions-focused replacement on OBDII vehicles.
Direct-fit construction. Specific-fit layout helps match the original exhaust routing.
Stainless steel body. Paired with a ceramic substrate for durable exhaust treatment.
Cross-references AP Exhaust 643143, Carlson 41173 and DENSO Auto Parts 5078 for the same application. See all 4.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Overview
Walker EPA 55708 is a direct-fit catalytic converter for specific Subaru Legacy and Subaru Outback applications. It is built for OBDII vehicles and uses a stainless steel body with a ceramic substrate for dependable exhaust treatment and fitment-specific replacement.
Key Features
- Direct-fit catalytic converter for specific Subaru applications
- Stainless steel body with a ceramic substrate
- 3-bolt welded flange inlet and 2-bolt welded flange outlet
- Round body design with specific-fit construction
- EPA-compliant design for OBDII vehicles
Detailed Description
Walker EPA 55708 is engineered as a replacement catalytic converter for the rear exhaust position on select Subaru Legacy and Subaru Outback models. The direct-fit layout helps match the original exhaust routing, while the stainless steel housing and ceramic substrate support exhaust flow and emissions control. This part number, 55708, is listed for 2015-2017 Subaru Legacy and Subaru Outback, plus 2018-2019 Subaru Legacy and Subaru Outback, with EPA notes shown in the fitment data.
This part cross-references AP Exhaust 643143 and Carlson 41173 for the same application.
What It Is Used For
- Replacing a worn or failed catalytic converter
- Restoring exhaust emissions control performance
- Addressing exhaust restriction from a damaged converter
- Matching a specific-fit exhaust configuration
Installation Notes
Fits 2015-2017 Subaru Legacy, rear. Fits 2015-2017 Subaru Outback, rear. Fits 2018-2019 Subaru Legacy, rear. Fits 2018-2019 Subaru Outback, rear. Fitment notes indicate an exhaust gasket is recommended and additional parts 31369 and 31639 are needed to complete installation on the 2015-2017 applications. Verify emissions requirements before installation, since the fitment notes include state-use restrictions for certain models.
Quality Assurance
Walker Ultra Direct-Fit Catalytic Converters are built to meet EPA standards and are offered for import and domestic OBDII vehicles. Part number 55708 is part of Walker's EPA line for emissions-focused replacement applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2019 | Subaru | Legacy | 2.5L | H4 | Rear | EPA |
| 2019 | Subaru | Outback | 2.5L | H4 | Rear | EPA |
| 2018 | Subaru | Legacy | 2.5L | H4 | Rear | EPA |
| 2018 | Subaru | Outback | 2.5L | H4 | Rear | EPA |
| 2017 | Subaru | Legacy | 2.5L | H4 | Rear | 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 - 31369 and 31639; Ultra Direct Fit Type; EPA |
| 2017 | Subaru | Outback | 2.5L | H4 | Rear | 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 - 31369 and 31639; Ultra Direct Fit Type; EPA |
| 2016 | Subaru | Legacy | 2.5L | H4 | Rear | 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 - 31369 and 31639; Ultra Direct Fit Type; EPA |
| 2016 | Subaru | Outback | 2.5L | H4 | Rear | 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 - 31369 and 31639; Ultra Direct Fit Type; EPA |
| 2015 | Subaru | Legacy | 2.5L | H4 | Rear | 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 - 31369 and 31639; Ultra Direct Fit Type; EPA |
| 2015 | Subaru | Outback | 2.5L | H4 | Rear | 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 - 31369 and 31639; Ultra Direct Fit Type; EPA |
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