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AP Exhaust 642224 Catalytic Converter

Brand	AP Exhaust 642224
Body Material	Stainless steel
Inlet Gasket	None
Inlet Hardware	Yes
Inlet Type A	2 bolt welded flange
O2 Sensor Ports	1
O2 Sensor Ports	2
Outlet Gasket	Yes
Outlet Hardware	None
Outlet Type A	3 bolt welded flange
Overall Length (IN)	30.25
Substrate Material	Ceramic
Type	Federal / epa direct-fit
Fits	Acura and Honda · 19 vehicles

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

Ceramic substrate. Promotes efficient converter performance with lower-cost loadings.

Stainless steel body. Adds durable corrosion resistance to the exhaust assembly.

$517.14Free shipping

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Direct-Fit Catalytic Converter for Honda Civic and Acura CSX

AP Exhaust 642224 is a Federal / EPA direct-fit catalytic converter built for OE-style fitment and emissions performance. It is engineered with a stainless steel body, ceramic substrate, and welded flange connections to support a precise replacement on select Honda Civic and Acura CSX applications.

Designed for 2006-2011 Honda Civic and 2006-2011 Acura CSX coverage, this converter follows exact dimensional requirements for straightforward installation and proper exhaust alignment. AP Exhaust 642224 is a practical replacement choice when you need a direct-fit catalytic converter for Honda Civic or Acura CSX exhaust repair.

Key Features

Federal / EPA direct-fit catalytic converter
Stainless steel body for exhaust system durability
Ceramic substrate material
2-bolt welded flange inlet and 3-bolt welded flange outlet
One O2 sensor port and one additional O2 sensor port listed in the product data
Overall length: 30.25 inches
Inlet hardware included; outlet gasket included

Detailed Product Overview

AP Exhaust 642224 uses ARISTO substrate chemistry and advanced manufacturing methods to support efficient catalyst loading while maintaining OE dimensions and fitment. The result is a replacement catalytic converter built for the exhaust layout used on select Honda Civic and Acura CSX models, with attention to flange placement, sensor provisions, and overall length. If you are searching for a catalytic converter for 2006-2011 Honda Civic or 2006-2011 Acura CSX, this part number is built around that application.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

Failed or restricted catalytic converter
Check engine light related to catalyst efficiency
Exhaust flow loss from a damaged converter core
Emissions test failure caused by converter deterioration
Exhaust leaks at flange connection points

Installation Notes and Tips

Compatible with 2006-2011 Honda Civic and 2006-2011 Acura CSX applications listed in the fitment data.
Federal / EPA direct-fit design supports OE-style replacement on the specified vehicles.
Review the vehicle’s emissions requirements before installation; not for sale or use on vehicles licensed in CA, CO, ME, or NY.
Confirm O2 sensor port count and flange style before beginning installation.
Use the correct fasteners and gaskets for the exhaust configuration on the vehicle.

Quality Assurance

AP Exhaust builds this converter with automated workstations, spinner welding equipment, and high-speed production lines to maintain consistent dimensions and fitment. The manufacturing approach is focused on repeatable OE-style replacement quality for the specified Honda Civic, Acura CSX, and related applications covered by part number 642224.

This part fits 19 vehicles

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

Year	Make	Model	Submodel	Liters	Cylinders	Position	Notes
2011	Acura	CSX	—	2.0L	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	Honda	Civic	Si	2.0L	L4	N/A	Direct Fit; (06-11); 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.; 10mm x 1.5 bolt required for installation on 89-91 models.
2011	Honda	Civic	Si	2.0L	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	Acura	CSX	—	2.0L	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	Honda	Civic	Si	2.0L	L4	N/A	Direct Fit; (06-11); 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.; 10mm x 1.5 bolt required for installation on 89-91 models.
2010	Honda	Civic	Si	2.0L	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	Acura	CSX	—	2.0L	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	Honda	Civic	Si	2.0L	L4	N/A	Direct Fit; (06-11); 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.; 10mm x 1.5 bolt required for installation on 89-91 models.
2009	Honda	Civic	Si	2.0L	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	Acura	CSX	—	2.0L	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	Honda	Civic	MUGEN Si	2.0L	L4	N/A	Direct Fit; (06-11); 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.; 10mm x 1.5 bolt required for installation on 89-91 models.
2008	Honda	Civic	Si	2.0L	L4	N/A	Direct Fit; (06-11); 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.; 10mm x 1.5 bolt required for installation on 89-91 models.
2008	Honda	Civic	Si	2.0L	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	Acura	CSX	—	2.0L	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	Honda	Civic	Si	2.0L	L4	N/A	Direct Fit; (06-11); 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.; 10mm x 1.5 bolt required for installation on 89-91 models.
2007	Honda	Civic	Si	2.0L	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	Acura	CSX	—	2.0L	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	Honda	Civic	Si	2.0L	L4	N/A	Direct Fit; (06-11); 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.; 10mm x 1.5 bolt required for installation on 89-91 models.
2006	Honda	Civic	Si	2.0L	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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