AP Exhaust 644083 Catalytic Converter - Rear
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AP Exhaust

AP Exhaust 644083 Catalytic Converter - Rear

Brand AP Exhaust 644083
Position Rear
Body Material Stainless steel
Inlet Gasket No
Inlet Gasket Qty None
Inlet Hardware No
Inlet Hardware None
Inlet Type A 2 bolt welded
Inlet Type A 2 bolt welded flange
O2 Sensor Ports 1
Outlet Gasket Yes
Outlet Gasket Qty 1
Outlet Hardware No
Outlet Hardware None
Outlet Type A 3 bolt welded
Outlet Type A 3 bolt welded flange
Overall Length (IN) 20.25
Substrate Material Ceramic
Type Federal / epa direct-fit
Fits Honda · 11 vehicles

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

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

Ceramic substrate. Supports efficient converter performance and emissions control.

Cross-references 18160RP3A00 for the same application. See all 1.

$437.17Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

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Step 2 — Quantity
Order total $437.17
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Catalytic Converter options

AP Exhaust 644083 Catalytic Converter

AP Exhaust 644083 is a Federal / EPA direct-fit catalytic converter built for 2009-2013 Honda Fit applications. It uses a stainless steel body, a ceramic substrate, and OE-style dimensions to support proper exhaust flow and fitment on the rear exhaust position.

For shoppers searching for a direct-fit catalytic converter for Honda Fit rear applications, this unit is built to match the original layout and connection style. The AP Exhaust 644083 also cross-references Honda part number 18160RP3A00 for the same application.

Key Features

  • Federal / EPA direct-fit catalytic converter
  • Fits 2009-2013 Honda Fit, rear
  • Stainless steel body for exhaust system durability
  • Ceramic substrate material
  • 1 O2 sensor port
  • 2-bolt welded inlet flange
  • 3-bolt welded outlet flange
  • Overall length: 20.25 inches
  • OE-dimensioned fitment for easier installation alignment

Detailed Description

AP Exhaust 644083 is engineered for 2009-2013 Honda Fit vehicles with a rear catalytic converter location. The direct-fit design follows OE dimensions, while the stainless steel body and ceramic substrate support consistent exhaust treatment and proper system integration. This makes it a practical replacement for drivers needing a Honda Fit catalytic converter that matches the factory-style connection points and sensor layout.

AP Emissions Technologies uses advanced manufacturing methods to keep converter dimensions and fitment consistent across production. The result is a Federal / EPA direct-fit replacement that aligns with the original exhaust configuration on the Honda Fit, including the rear position and single O2 sensor port.

Common Issues This Part May Address

  • Failed catalytic converter efficiency codes
  • Exhaust restriction from a damaged or worn converter
  • Check engine light related to catalyst performance
  • Exhaust leaks at the converter connection points
  • Fitment problems caused by a non-OE-style replacement

Installation Notes and Tips

Verify the vehicle is a 2009-2013 Honda Fit with the rear converter application before ordering. Confirm the inlet and outlet flange style, O2 sensor port location, and overall exhaust routing against the original part. This converter uses a 2-bolt welded inlet flange and a 3-bolt welded outlet flange, so matching the factory connection points is important for proper installation.

Federal and California emissions notes are listed for this application. Not for sale or use on vehicles licensed in CA, CO, ME, or NY; restrictions may apply in other states. Check local emissions requirements before installation.

Quality Assurance

AP Exhaust builds this converter to OE dimensions using automated workstations, spinner welding equipment, and high-speed production processes to support consistent fitment and manufacturing control. Part number 644083 is produced as a Federal / EPA direct-fit catalytic converter for the specified Honda Fit applications.

Related reading

This part fits 11 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2013HondaFit1.5LL4N/ADirect 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.
2013HondaFit-L--RearDirect 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.
2013HondaFit1.5LL4RearDirect 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.
2012HondaFit1.5LL4N/ADirect 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.
2012HondaFit1.5LL4RearDirect 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.
2011HondaFit1.5LL4N/ADirect 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.
2011HondaFit1.5LL4RearDirect 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.
2010HondaFit1.5LL4N/ADirect 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.
2010HondaFit1.5LL4RearDirect 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.
2009HondaFit1.5LL4N/ADirect 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.
2009HondaFit1.5LL4RearDirect 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.
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
18160RP3A00