AP Exhaust 642223 Catalytic Converter - Rear

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AP Exhaust 642223 Catalytic Converter - Rear

Brand	AP Exhaust 642223
Position	Rear
Body Material	Stainless steel
Inlet Gasket	2
Inlet Gasket	Yes
Inlet Hardware	None
Inlet Type A	3 bolt welded flange
O2 Sensor Ports	1
Outlet Gasket	Yes
Outlet Hardware	None
Outlet Type A	2 bolt welded flange w/ gasket stub
Overall Length (IN)	42.25
Substrate Material	Ceramic
Type	Federal / epa direct-fit
Fits	Lexus · 17 vehicles

Direct-fit design. Built to OE dimensions for straightforward replacement alignment.

Stainless steel body. Helps resist corrosion in demanding exhaust environments.

Ceramic substrate. Supports catalytic function with efficient loading.

$388.71Free shipping

In stock · usually ships same day before 1pm CST

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Overview

AP Exhaust 642223 is a Federal / EPA direct-fit catalytic converter built for exact OE dimensions and fitment. It uses a stainless steel body, a ceramic substrate, and welded flange connections to support a precise exhaust seal on compatible Lexus applications.

This part number 642223 is engineered for rear-position fitment on select Lexus GS300 and Lexus IS300 models. The design follows the original converter layout, making it a practical replacement when the original unit is restricted, damaged, or no longer performing as expected.

Key Features

Federal / EPA direct-fit catalytic converter
Stainless steel body for corrosion resistance
Ceramic substrate material
3-bolt welded inlet flange
2-bolt welded outlet flange with gasket stub
One O2 sensor port
Built to OE dimensions and fitment

Detailed Description

AP Exhaust 642223 uses ARISTO substrate chemistry and advanced manufacturing methods to deliver efficient converter loading while maintaining OE-style dimensions. The stainless steel construction and welded flange design support a secure exhaust connection, while the ceramic substrate is selected for catalytic function in a direct-fit layout. This part number 642223 is a fitment-based replacement for rear exhaust applications on Lexus GS300 and Lexus IS300 models listed below.

AP Exhaust focuses on direct-fit emissions components that match original dimensions for easier replacement and consistent installation alignment. For buyers searching for a Lexus GS300 catalytic converter rear or a Lexus IS300 rear catalytic converter replacement, this unit provides a vehicle-specific solution with Federal / EPA configuration.

What It Helps Address

Failed catalytic converter efficiency
Exhaust restriction from a damaged substrate
Exhaust leaks at flange connections
Check engine light concerns related to converter performance
Replacement needs for direct-fit emissions service

Installation Notes

Fits 2000-2005 Lexus GS300, rear. Fits 2001-2005 Lexus IS300, rear. Verify emissions requirements before installation, since the fitment notes reference Federal and California emissions restrictions for certain states. Confirm the flange style, O2 sensor port count, and overall length match the original exhaust configuration before beginning service.

Quality Assurance

AP Exhaust states that this converter is manufactured to exact OE dimensions and fitment using automated workstations, spinner welding equipment, and high-speed production lines. Part number 642223 is built as a Federal / EPA direct-fit catalytic converter for consistent replacement alignment.

This part fits 17 vehicles

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

Year	Make	Model	Liters	Cylinders	Position	Notes
2005	Lexus	GS300	3.0L	L6	Rear	Direct Fit; (w/ 42" OAL Conv.); 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	Lexus	GS300	3.0L	L6	Rear	Direct Fit; w/42" Conv.; 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	Lexus	IS300	3.0L	L6	Rear	Direct Fit; w/42" Conv.; 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.
2004	Lexus	GS300	3.0L	L6	Rear	Direct Fit; (w/ 42" OAL Conv.); 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.
2004	Lexus	GS300	3.0L	L6	Rear	Direct Fit; w/42" Conv.; 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.
2004	Lexus	IS300	3.0L	L6	Rear	Direct Fit; w/42" Conv.; 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.
2003	Lexus	GS300	3.0L	L6	Rear	Direct Fit; (w/ 42" OAL Conv.); 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.
2003	Lexus	GS300	3.0L	L6	Rear	Direct Fit; w/42" Conv.; 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.
2003	Lexus	IS300	3.0L	L6	Rear	Direct Fit; w/42" Conv.; 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.
2002	Lexus	GS300	3.0L	L6	Rear	Direct Fit; (w/ 42" OAL Conv.); 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.
2002	Lexus	GS300	3.0L	L6	Rear	Direct Fit; w/42" Conv.; 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.
2002	Lexus	IS300	3.0L	L6	Rear	Direct Fit; w/42" Conv.; 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.
2001	Lexus	GS300	3.0L	L6	Rear	Direct Fit; (w/ 42" OAL Conv.); 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.
2001	Lexus	GS300	3.0L	L6	Rear	Direct Fit; w/42" Conv.; 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.
2001	Lexus	IS300	3.0L	L6	Rear	Direct Fit; w/42" Conv.; 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.
2000	Lexus	GS300	3.0L	L6	Rear	Direct Fit; (w/ 42" OAL Conv.); 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.
2000	Lexus	GS300	3.0L	L6	Rear	Direct Fit; w/42" Conv.; 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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