AP Exhaust 645803 Catalytic Converter

Brand	AP Exhaust 645803
Body Material	Stainless steel
Inlet Gasket	Yes
Inlet Hardware	None
Inlet Type A	2 bolt welded flange w/ female flare
O2 Sensor Ports	2
Outlet Gasket	Yes
Outlet Hardware	None
Outlet Type A	2 bolt welded flange w/ gasket stub
Overall Length (IN)	47.5
Substrate Material	Ceramic
Type	Federal / epa direct-fit
Product line	Direct Fit Converter
Fits	Toyota · 57 vehicles

Direct-fit converter. Built to exact OE dimensions for straightforward installation.

Stainless steel body. Helps resist corrosion for long-term durability.

Ceramic substrate. Supports efficient converter performance.

Cross-references 17410-0C100 for the same application. See all 1.

$359.23Free shipping

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AP Exhaust Direct Fit Converter for Tacoma

AP Exhaust Direct Fit Converter 645803 is a Federal / EPA direct-fit catalytic converter built for Toyota Tacoma applications from 2005-2022. It uses a stainless steel body, a ceramic substrate, and OE-style flange connections to support proper exhaust sealing and factory-style fitment.

The Direct Fit Converter line from AP Exhaust focuses on OE dimensions and consistent installation fitment. For Tacoma owners, that means a replacement converter engineered around the original mounting points, inlet and outlet configuration, and emissions-system layout.

Key Features

Part number 645803 for Toyota Tacoma exhaust repair
Federal / EPA direct-fit catalytic converter
Stainless steel body for corrosion resistance
Ceramic substrate material
2-bolt welded flange inlet with female flare
2-bolt welded flange outlet with gasket stub
Includes inlet gasket and outlet gasket
Two O2 sensor ports
Overall length: 47.5 inches

Detailed Description

AP Exhaust 645803 is built to replace the factory catalytic converter on compatible Toyota Tacoma models while maintaining OE-style dimensions and fitment. The converter uses AP Emissions Technologies’ ARISTO substrate chemistry and automated manufacturing processes to support efficient catalyst loading and consistent build quality. The result is a direct-fit replacement designed around the Tacoma exhaust layout, with welded flange connections and integrated oxygen sensor ports for a cleaner installation path.

This part cross-references Toyota OE number 17410-0C100 for the same application.

What It Helps Address

Check engine light related to catalyst efficiency faults
Failed emissions inspection caused by a worn catalytic converter
Exhaust leaks at the converter flange connections
Restricted exhaust flow from a deteriorated substrate
Fitment issues from a non-OE-style replacement converter

Installation Notes and Tips

Fits 2021-2022 Toyota Tacoma, N/A, Federal and California Emissions; Direct Fit Converter.
Fits 2005-2020 Toyota Tacoma, N/A, Direct Fit; Federal and California Emissions. Not for sale or use on vehicles licensed in CA, CO, ME, and NY; check local regulations for additional restrictions.
Verify the vehicle’s emissions certification and existing exhaust configuration before installation.
Confirm O2 sensor port placement and flange alignment against the original converter.
Use new gaskets during installation to help maintain a proper seal at the inlet and outlet.

Quality Assurance

AP Exhaust builds this converter to exact OE dimensions using automated workstations, spinner welding equipment, and high-speed production lines. The Direct Fit Converter line is engineered for consistent fitment and production control across Tacoma applications.

This part fits 57 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Liters	Cylinders	Wheel Base	Position	Notes
2022	Toyota	Tacoma	2.7L	L4	—	N/A	Federal and California Emissions; Direct Fit Converter
2021	Toyota	Tacoma	2.7L	L4	—	N/A	Federal and California Emissions; Direct Fit Converter
2020	Toyota	Tacoma	2.7L	L4	127.4"	N/A	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.
2020	Toyota	Tacoma	2.7L	L4	—	N/A	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	Toyota	Tacoma	2.7L	L4	127.4"	N/A	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	Toyota	Tacoma	2.7L	L4	—	N/A	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	Toyota	Tacoma	2.7L	L4	127.4"	N/A	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	Toyota	Tacoma	2.7L	L4	—	N/A	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	Toyota	Tacoma	2.7L	L4	127.4"	N/A	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	Toyota	Tacoma	2.7L	L4	—	N/A	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	Toyota	Tacoma	2.7L	L4	127.4"	N/A	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	Toyota	Tacoma	2.7L	L4	—	N/A	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	Toyota	Tacoma	2.7L	L4	127.4"	N/A	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	Toyota	Tacoma	2.7L	L4	—	N/A	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	Toyota	Tacoma	2.7L	L4	127.4"	N/A	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	Toyota	Tacoma	2.7L	L4	109.6"	N/A	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	Toyota	Tacoma	2.7L	L4	—	N/A	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	Toyota	Tacoma	2.7L	L4	127.4"	N/A	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	Toyota	Tacoma	2.7L	L4	109.6"	N/A	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	Toyota	Tacoma	2.7L	L4	—	N/A	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.
2012	Toyota	Tacoma	2.7L	L4	127.4"	N/A	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.
2012	Toyota	Tacoma	2.7L	L4	109.6"	N/A	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.
2012	Toyota	Tacoma	2.7L	L4	—	N/A	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.
2011	Toyota	Tacoma	2.7L	L4	127.4"	N/A	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.
2011	Toyota	Tacoma	2.7L	L4	109.6"	N/A	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.
2011	Toyota	Tacoma	2.7L	L4	110.0"	N/A	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.
2011	Toyota	Tacoma	2.7L	L4	—	N/A	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.
2010	Toyota	Tacoma	2.7L	L4	127.8"	N/A	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.
2010	Toyota	Tacoma	2.7L	L4	127.2"	N/A	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.
2010	Toyota	Tacoma	2.7L	L4	110.0"	N/A	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.
2010	Toyota	Tacoma	2.7L	L4	109.4"	N/A	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.
2010	Toyota	Tacoma	2.7L	L4	—	N/A	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.
2009	Toyota	Tacoma	2.7L	L4	127.2"	N/A	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.
2009	Toyota	Tacoma	2.7L	L4	127.8"	N/A	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.
2009	Toyota	Tacoma	2.7L	L4	110.0"	N/A	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.
2009	Toyota	Tacoma	2.7L	L4	109.4"	N/A	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.
2009	Toyota	Tacoma	2.7L	L4	—	N/A	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.
2008	Toyota	Tacoma	2.7L	L4	127.8"	N/A	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.
2008	Toyota	Tacoma	2.7L	L4	127.2"	N/A	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.
2008	Toyota	Tacoma	2.7L	L4	110.0"	N/A	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.
2008	Toyota	Tacoma	2.7L	L4	109.4"	N/A	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.
2008	Toyota	Tacoma	2.7L	L4	—	N/A	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.
2007	Toyota	Tacoma	2.7L	L4	127.2"	N/A	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.
2007	Toyota	Tacoma	2.7L	L4	127.8"	N/A	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.
2007	Toyota	Tacoma	2.7L	L4	109.4"	N/A	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.
2007	Toyota	Tacoma	2.7L	L4	110.0"	N/A	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.
2007	Toyota	Tacoma	2.7L	L4	—	N/A	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.
2006	Toyota	Tacoma	2.7L	L4	127.2"	N/A	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.
2006	Toyota	Tacoma	2.7L	L4	127.8"	N/A	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.
2006	Toyota	Tacoma	2.7L	L4	109.4"	N/A	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.
2006	Toyota	Tacoma	2.7L	L4	110.0"	N/A	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.
2006	Toyota	Tacoma	2.7L	L4	—	N/A	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.
2005	Toyota	Tacoma	2.7L	L4	127.2"	N/A	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.
2005	Toyota	Tacoma	2.7L	L4	127.8"	N/A	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.
2005	Toyota	Tacoma	2.7L	L4	110.0"	N/A	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.
2005	Toyota	Tacoma	2.7L	L4	109.4"	N/A	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.
2005	Toyota	Tacoma	2.7L	L4	—	N/A	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.
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Directly replaces or cross-references 1 part number

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

17410-0C100