AP Exhaust 644165 Catalytic Converter - Rear

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AP Exhaust 644165 Catalytic Converter - Rear

Brand	AP Exhaust 644165
Position	Rear
Body Material	Stainless steel
Clamp Qty	1
Inlet Gasket Qty	1
Inlet Hardware	Yes
Inlet Type A	2 bolt welded
Outlet Gasket Qty	None
Outlet Hardware	None
Outlet Type A	2.25" od
Overall Length (IN)	18
Type	Federal / epa direct-fit
Fits	Hyundai and Kia · 22 vehicles

Federal / EPA direct-fit. Built to exact OE dimensions for straightforward installation.

Stainless steel body. Resists corrosion for long-term durability in the exhaust system.

ARISTO substrate chemistry. Delivers efficient converter loading for better performance.

Cross-references 28600-4Z300 for the same application. See all 1.

$204.11Free shipping

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OE-Fit Catalytic Converter for Kia and Hyundai

AP Exhaust 644165 is a Federal / EPA direct-fit catalytic converter built for exact OE dimensions and fitment. It is engineered for rear-position applications on select Kia Sorento and Hyundai Santa Fe Sport models, with stainless steel construction and a 2.25" OD outlet for a factory-style exhaust connection.

For shoppers searching for a Kia Sorento catalytic converter rear or a Hyundai Santa Fe Sport rear catalytic converter, this AP Exhaust 644165 replacement is built to match the original layout and connection style. It is also listed for use with OE pipe or OE muffler assembly configurations where noted in the fitment details.

Key Features

Federal / EPA direct-fit catalytic converter
Stainless steel body material for exhaust system durability
Built to OE dimensions for proper fitment
2-bolt welded inlet design
2.25" OD outlet connection
Overall length: 18 inches
Includes inlet gasket and inlet hardware as listed in the product attributes

Detailed Product Overview

AP Exhaust 644165 uses ARISTO substrate chemistry and modern manufacturing methods to produce a converter with efficient catalyst loading and consistent fit. Automated production, spinner welding, and high-speed assembly processes help maintain dimensional accuracy across the unit, which is important when replacing a rear catalytic converter on a welded OE exhaust section. This part cross-references 28600-4Z300 for the same application.

Compatible With 2014-2020 Kia Sorento, rear; 2014-2015 Kia Sorento, N/A; 2013-2018 Hyundai Santa Fe Sport, rear; and 2014 Hyundai Santa Fe Sport, N/A, depending on the exhaust configuration listed in the fitment notes. The AP Exhaust 644165 is a direct-fit replacement for drivers needing a factory-style emissions component on these Kia Sorento and Hyundai Santa Fe Sport applications.

What This Part Helps Address

Failed or inefficient rear catalytic converter operation
Check engine light concerns related to catalyst efficiency codes
Exhaust restriction caused by a deteriorated converter substrate
Fitment issues when replacing an OE welded converter section
Emissions compliance needs on supported Federal and California emissions applications

Installation Notes and Tips

Review the vehicle-specific fitment notes before ordering, especially for OE pipe or OE muffler assembly requirements.
Some Hyundai Santa Fe Sport and Kia Sorento applications require the OE system to be cut 3.5" behind the rear converter weld.
Use the listed inlet hardware and gasket details as reference during installation planning.
Confirm the vehicle’s emissions configuration and state restrictions before installation.
Professional installation is recommended for welded exhaust sections and emissions components.

Quality Assurance

AP Exhaust manufactures this converter to OE dimensions using controlled production methods and substrate chemistry focused on efficient catalyst loading. The result is a direct-fit emissions replacement built for consistent fitment on the specified Kia Sorento and Hyundai Santa Fe Sport applications.

This part fits 22 vehicles

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

Year	Make	Model	Liters	Cylinders	Position	Notes
2020	Kia	Sorento	2.4L	L4	Rear	Direct Fit; For use with OE pipe; 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	Kia	Sorento	2.4L	L4	Rear	Direct Fit; For use with OE pipe; 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	Hyundai	Santa Fe Sport	2.4L	L4	Rear	Direct Fit; (Use w/ O.E. Muffler Assembly); 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.; The O.E. system must be cut off 3.5" behind the rear converter weld.; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2018	Hyundai	Santa Fe Sport	2.4L	L4	Rear	Direct Fit; For use with OE pipe; 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	Kia	Sorento	2.4L	L4	Rear	Direct Fit; For use with OE pipe; 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	Hyundai	Santa Fe Sport	2.4L	L4	Rear	Direct Fit; (Use w/ O.E. Muffler Assembly); 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.; The O.E. system must be cut off 3.5" behind the rear converter weld.; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2017	Hyundai	Santa Fe Sport	2.4L	L4	Rear	Direct Fit; For use with OE pipe; 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	Kia	Sorento	2.4L	L4	Rear	Direct Fit; For use with OE pipe; 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	Hyundai	Santa Fe Sport	2.4L	L4	Rear	Direct Fit; (Use w/ O.E. Muffler Assembly); 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.; The O.E. system must be cut off 3.5" behind the rear converter weld.; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2016	Hyundai	Santa Fe Sport	2.4L	L4	Rear	Direct Fit; For use with OE pipe; 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	Kia	Sorento	2.4L	L4	Rear	Direct Fit; For use with OE pipe; 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	Hyundai	Santa Fe Sport	2.4L	L4	Rear	Direct Fit; (Use w/ O.E. Muffler Assembly); 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.; The O.E. system must be cut off 3.5" behind the rear converter weld.; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2015	Hyundai	Santa Fe Sport	2.4L	L4	Rear	Direct Fit; For use with OE pipe; 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	Kia	Sorento	2.4L	L4	N/A	Direct Fit; (Use w/ O.E. Muffler Assembly); 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.; The O.E. system must be cut off 3.5" behind the rear converter weld.; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2015	Kia	Sorento	2.4L	L4	Rear	Direct Fit; For use with OE pipe; 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	Hyundai	Santa Fe Sport	2.4L	L4	Rear	Direct Fit; (Use w/ O.E. Muffler Assembly); 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.; The O.E. system must be cut off 3.5" behind the rear converter weld.; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2014	Hyundai	Santa Fe Sport	2.4L	L4	N/A	Direct Fit; (Use w/ O.E. Muffler Assembly); 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.; The O.E. system must be cut off 3.5" behind the rear converter weld.; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2014	Hyundai	Santa Fe Sport	2.4L	L4	Rear	Direct Fit; For use with OE pipe; 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	Kia	Sorento	2.4L	L4	N/A	Direct Fit; (Use w/ O.E. Muffler Assembly); 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.; The O.E. system must be cut off 3.5" behind the rear converter weld.; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2014	Kia	Sorento	2.4L	L4	Rear	Direct Fit; For use with OE pipe; 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	Hyundai	Santa Fe Sport	2.4L	L4	Rear	Direct Fit; (Use w/ O.E. Muffler Assembly); 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.; The O.E. system must be cut off 3.5" behind the rear converter weld.; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2013	Hyundai	Santa Fe Sport	2.4L	L4	Rear	Direct Fit; For use with OE pipe; 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.

28600-4Z300