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AP ExhaustPart #: 643143
AP Exhaust 643143 Catalytic Converter - Rear
16 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Subaru, Legacy and Outback
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AP Exhaust 643143 Catalytic Converter
AP Exhaust 643143 is a Federal / EPA direct-fit catalytic converter built for rear-position applications on select Subaru Legacy and Subaru Outback models. It uses a ceramic substrate and OE-style dimensions to support proper fitment on 2013-2019 Subaru Legacy and 2013-2019 Subaru Outback applications.
Key Features
- Federal / EPA direct-fit catalytic converter
- Ceramic substrate material for emissions conversion performance
- Built to exact OE dimensions for fitment consistency
- Rear position application
- 3-bolt welded flange inlet and 2-bolt welded flange outlet
- Overall length: 60 in.
- Inlet gasket and outlet gasket specified for the application
- Outlet hardware included; inlet hardware not included
- No O2 sensor ports
Fitment Details
- Fits 2013-2019 Subaru Legacy, rear. Direct Fit; Federal and California Emissions. Not for sale or use on vehicles licensed in CA, CO, ME, and NY. Restrictions may apply in other states.
- Fits 2013-2019 Subaru Outback, rear. Direct Fit; Federal and California Emissions. Not for sale or use on vehicles licensed in CA, CO, ME, and NY. Restrictions may apply in other states.
- Fits 2013-2014 Subaru Outback, rear. Direct Fit; Federal Emissions. Not for sale or use on vehicles licensed in CA, CO, ME, and NY. Restrictions may apply in other states.
What This Part Helps Address
- Failed emissions testing caused by a worn or inefficient converter
- Check engine light concerns related to catalytic converter efficiency
- Exhaust restriction from a damaged or deteriorated converter
- Fitment issues when replacing an OE-style rear converter on Subaru Legacy or Subaru Outback models
Installation Notes
Verify the vehicle’s emissions configuration before ordering, since coverage differs by model year and emissions package. This part uses a 3-bolt welded flange inlet and a 2-bolt welded flange outlet, with no O2 sensor ports. Confirm rear-position placement and compare the existing converter to AP Exhaust 643143 before installation.
Quality Assurance
AP Exhaust uses proprietary substrate chemistry and advanced manufacturing methods, including automated workstations, spinner welding equipment, and high-speed production lines, to build converters to OE dimensions and fitment standards. This part cross-references Monroe Shocks & Struts (e.g., 1740236010) for the same application.
| Brand | AP Exhaust |
|---|---|
| Part Number | 643143 |
| Clamp Qty | 1 |
| Inlet Gasket Qty | 1 |
| Inlet Hardware | None |
| Inlet Type A | 3 bolt welded flange |
| O2 Sensor Ports | None |
| Outlet Gasket Qty | 1 |
| Outlet Hardware | Yes |
| Outlet Type A | 2 bolt welded flange |
| Overall Length (IN) | 60 |
| Substrate Material | Ceramic |
| Type | Federal / epa direct-fit |
This part fits 16 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2019 | Subaru | Legacy | 2.5L | H4 | Rear | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2019 | Subaru | Outback | 2.5L | H4 | Rear | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2018 | Subaru | Legacy | 2.5L | H4 | Rear | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2018 | Subaru | Outback | 2.5L | H4 | Rear | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2017 | Subaru | Legacy | 2.5L | H4 | Rear | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2017 | Subaru | Outback | 2.5L | H4 | Rear | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2016 | Subaru | Legacy | 2.5L | H4 | Rear | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2016 | Subaru | Outback | 2.5L | H4 | Rear | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2015 | Subaru | Legacy | 2.5L | H4 | Rear | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2015 | Subaru | Outback | 2.5L | H4 | Rear | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2014 | Subaru | Legacy | 2.5L | H4 | Rear | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2014 | Subaru | Outback | 2.5L | H4 | Rear | Direct Fit; (13-14); Federal Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME and NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2014 | Subaru | Outback | 2.5L | H4 | Rear | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2013 | Subaru | Legacy | 2.5L | H4 | Rear | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2013 | Subaru | Outback | 2.5L | H4 | Rear | Direct Fit; (13-14); Federal Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME and NY. Restrictions may apply in other states. Check with your state authority for details. |
| 2013 | Subaru | Outback | 2.5L | H4 | Rear | Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details. |
* 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:
1740236010
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.