AP Exhaust 641597 Catalytic Converter with Integrated Exhaust Manifold - Front
OE Quality 60-Day Returns
AP Exhaust
 Direct Fit Converter w/ Manifold

AP Exhaust 641597 Catalytic Converter with Integrated Exhaust Manifold - Front

Brand AP Exhaust 641597
Position Front
Converter Type Federal / epa direct-fit manifold
Inlet Quantity 1
Outlet Quantity 1
California Air Resources Board (CARB) Certified No
Substrate Material Ceramic
Overall Length 18.500
Boxed Yes
Inlet A Connection Type Welded flange
Inlet Gasket Quantity 1
Inlet Hardware Yes
Inlet Type A 5 bolt welded
O2 Sensor Ports 1
Outlet A Connection Type Welded flange
Outlet Gasket 1
Outlet Hardware Yes
Outlet Type A 2 bolt welded
Package Material Corrugated cardboard
Package Type Box
Product line Direct Fit Converter w/ Manifold
Fits Lexus and Toyota · 46 vehicles

Direct-fit design. Factory-style manifold converter for straightforward exhaust replacement.

Ceramic substrate. Built with a ceramic core for emissions control service.

Welded flange connections. Uses welded inlet and outlet flanges for a secure exhaust interface.

$343.25Free 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.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $343.25
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 with Integrated Exhaust Manifold options

Direct-Fit Manifold Converter

AP Exhaust 641597 is a direct-fit catalytic converter with integrated exhaust manifold for select Lexus and Toyota applications. It uses a ceramic substrate and a welded-flange connection layout for a factory-style exhaust repair on the front exhaust side.

This AP Exhaust 641597 converter is built for Federal / EPA emissions applications and is boxed for protected handling. It includes one O2 sensor port and uses welded flange inlet and outlet connections for a precise exhaust interface.

Key Features

  • Direct-fit catalytic converter with integrated exhaust manifold
  • Ceramic substrate for emissions control service
  • Federal / EPA emissions configuration
  • One O2 sensor port
  • Welded flange inlet and outlet connections
  • Boxed for packaging protection

Fitment Details

Compatible with select Lexus and Toyota front applications. Fits 2025 Lexus NX350h, front; Fits 2023 Lexus NX350h, front; Fits 2022-2025 Lexus NX450h+, front; Fits 2024-2025 Lexus RX450h+, front; Fits 2024-2025 Toyota Grand Highlander, front; Fits 2024-2025 Toyota Highlander, front; Fits 2024-2025 Toyota RAV4, front; Fits 2024-2025 Toyota Sienna, front; Fits 2023-2024 Lexus NX250, front; Fits 2023-2024 Toyota Camry, front; Fits 2023 Toyota Highlander, front; Fits 2023 Toyota RAV4, N/A; Fits 2023 Toyota Sienna, front; Fits 2021-2023 Toyota Venza, front; Fits 2021-2022 Lexus ES250, front; Fits 2022 Lexus NX250, front; Fits 2022 Lexus NX350h, front; Fits 2018-2022 Toyota Camry, front; Fits 2020-2022 Toyota Highlander, front; Fits 2019-2022 Toyota RAV4, front; Fits 2021-2022 Toyota Sienna, front; Fits 2021 Toyota Avalon, front; Fits 2021 Toyota RAV4 Prime, front.

What It Helps Address

  • Failed catalytic converter emissions testing
  • Exhaust manifold or converter housing damage
  • Restricted exhaust flow from a worn substrate
  • Check engine light concerns related to converter efficiency
  • Exhaust leaks at the manifold-to-pipe connection

Installation Notes

Verify Federal / EPA application before ordering, since some listed vehicles are not for sale or use in CA, CO, ME, and NY. Confirm the front exhaust configuration, O2 sensor port location, and flange style against the original part before installation. AP Exhaust 641597 is a direct-fit replacement, but final fit should always be checked against the vehicle’s emissions label and original exhaust layout.

Quality Assurance

AP Exhaust 641597 is engineered as a direct-fit manifold converter for emissions service on select Lexus and Toyota models. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Related reading

This part fits 46 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2025LexusNX350h—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2025LexusNX450h+—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2025LexusRX450h+—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2025ToyotaGrand Highlander—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2025ToyotaHighlander—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2025ToyotaRAV4Hybrid Limited2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.; Direct Fit Converter w/ Manifold
2025ToyotaSienna—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2024LexusNX250—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2024LexusNX450h+—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2024LexusRX450h+—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2024ToyotaCamry—2.5LL4FULL HYBRID EV-GAS (FHEV)FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2024ToyotaGrand Highlander—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2024ToyotaHighlander—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2024ToyotaRAV4—2.5LL4FULL HYBRID EV-GAS (FHEV)FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.; Direct Fit Converter w/ Manifold
2024ToyotaSienna—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2023LexusNX250—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2023LexusNX350h—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2023LexusNX450h+—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2023ToyotaCamry—2.5LL4FULL HYBRID EV-GAS (FHEV)FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2023ToyotaHighlander—2.5LL4—FrontFederal and California Emissions
2023ToyotaRAV4—2.5LL4FULL HYBRID EV-GAS (FHEV)N/AFederal and California Emissions; Direct Fit Converter w/ Manifold
2023ToyotaSienna—2.5LL4—FrontFederal and California Emissions
2023ToyotaVenza—2.5LL4—FrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2022LexusES250Base2.5LL4—FrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2022LexusNX250—2.5LL4—FrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2022LexusNX350h—2.5LL4—FrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2022LexusNX450h+—2.5LL4—FrontNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2022ToyotaCamry—2.5LL4GASFrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2022ToyotaHighlander—2.5LL4—FrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2022ToyotaRAV4—2.5LL4GASFrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2022ToyotaSienna—2.5LL4—FrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2022ToyotaVenza—2.5LL4—FrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2021LexusES250Base2.5LL4—FrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2021ToyotaAvalon—2.5LL4GASFrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2021ToyotaCamry—2.5LL4GASFrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2021ToyotaHighlander—2.5LL4—FrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2021ToyotaRAV4—2.5LL4GASFrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2021ToyotaRAV4 Prime—2.5LL4—FrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2021ToyotaSienna—2.5LL4—FrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2021ToyotaVenza—2.5LL4—FrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2020ToyotaCamry—2.5LL4GASFrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2020ToyotaHighlander—2.5LL4—FrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2020ToyotaRAV4—2.5LL4—FrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2019ToyotaCamry—2.5LL4GASFrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2019ToyotaRAV4—2.5LL4—FrontFederal and California Emissions; Direct Fit Converter w/ Manifold
2018ToyotaCamry—2.5LL4GASFrontFederal and California Emissions; Direct Fit Converter w/ Manifold