HomeExhaust > Catalytic ConverterAP Exhaust 643151 Catalytic Converter - Rear
Part #: 643151

AP Exhaust 643151 Catalytic Converter - Rear

Direct Fit Converter, Rear
⚙️ 17 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$391.78Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Direct Fit Converter, Rear
🚗Fitment: Acura and Honda, MDX, Pilot, and Ridgeline
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of AP Exhaust Direct Fit Converter 643151

The AP Exhaust Direct Fit Converter 643151 is designed specifically for Acura and Honda vehicles, including the MDX, Pilot, and Ridgeline models. Crafted from durable stainless steel, this catalytic converter ensures reliable performance and longevity while meeting Federal EPA standards.

  • Constructed from corrosion-resistant stainless steel body material
  • Federal/EPA direct-fit catalytic converter design
  • Compatible with Acura MDX, Honda Pilot, and Honda Ridgeline
  • Equipped with one O2 sensor port for accurate emissions monitoring
  • 3 bolt welded inlet and outlet connections for secure fitment
  • Includes 2 inlet gaskets and 1 outlet gasket for proper sealing
  • Overall length of 53 inches for precise vehicle fit
  • Outlet hardware included to facilitate installation

Direct Fit Converter Product Line Details

The Direct Fit Converter line by AP Exhaust focuses on providing catalytic converters that match OEM specifications for a direct replacement. This product line emphasizes ease of installation and compliance with Federal and EPA emissions regulations. The 643151 part number is part of this line, ensuring it fits directly onto the exhaust system of compatible Acura and Honda models without requiring modifications.

Product Features and Specifications

This catalytic converter features a stainless steel body that resists rust and corrosion, extending the service life of the part. Both the inlet and outlet connections utilize 3 bolt welded flanges, providing a secure and leak-free fit. The inclusion of one O2 sensor port allows for proper sensor installation, maintaining accurate emissions control. The converter comes with two inlet gaskets and one outlet gasket to ensure a tight seal during installation. With an overall length of 53 inches, it is designed to fit the exhaust layout of Acura MDX, Honda Pilot, and Honda Ridgeline models precisely.

Common Applications and Problem Solving

  • Replacement for damaged or clogged catalytic converters on Acura MDX, Honda Pilot, and Ridgeline
  • Restores proper emissions control to meet Federal and EPA standards
  • Eliminates exhaust leaks caused by worn or broken gaskets
  • Resolves check engine light issues related to catalytic converter failure
  • Improves exhaust flow and engine performance by replacing faulty converters

Installation Notes and Tips

Installation requires removal of the existing catalytic converter and proper alignment of the 3 bolt welded inlet and outlet flanges. Use the included inlet and outlet gaskets to ensure a secure, leak-free seal. The outlet hardware is provided to assist with fastening the converter in place. It is recommended to inspect the O2 sensor and wiring during installation to ensure proper function. Professional installation is advised to maintain compliance with emissions regulations.

Quality Assurance and Warranty

The AP Exhaust Direct Fit Converter 643151 is manufactured to meet Federal and EPA emissions standards, ensuring regulatory compliance. Constructed from stainless steel, it offers durability and resistance to corrosion. Warranty information is subject to the manufacturer's terms and should be verified at the time of purchase.

BrandAP Exhaust
Part Number643151
PositionDirect Fit Converter, Rear
Body MaterialStainless steel
Clamp QtyNone
Inlet Gasket Qty2
Inlet HardwareNone
Inlet Type A3 bolt welded
Inlet Type B3 bolt welded
O2 Sensor Ports1
Outlet Gasket Qty1
Outlet HardwareYes
Outlet Type A3 bolt welded
Overall Length (IN)53
TypeFederal / epa direct-fit

This part fits 17 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2021HondaPilot3.5LV6RearFederal and California Emissions; Direct Fit Converter
2020AcuraMDX3.5LV6RearFederal and California Emissions; Direct Fit Converter
2020HondaPilot3.5LV6RearFederal and California Emissions; Direct Fit Converter
2020HondaRidgeline3.5LV6RearFederal and California Emissions; Direct Fit Converter
2019AcuraMDX3.5LV6RearDirect 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.
2019HondaPilot3.5LV6RearDirect 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.
2019HondaRidgeline3.5LV6RearDirect 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.
2018AcuraMDX3.5LV6RearDirect 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.
2018HondaPilot3.5LV6RearDirect 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.
2018HondaRidgeline3.5LV6RearDirect 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.
2017AcuraMDX3.5LV6RearDirect 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.
2017HondaPilot3.5LV6RearDirect 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.
2017HondaRidgeline3.5LV6RearDirect 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.
2016AcuraMDX3.5LV6RearDirect 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.
2016HondaPilot3.5LV6RearDirect 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.
2015AcuraMDX3.5LV6RearFederal and California Emissions; Direct Fit Converter
2014AcuraMDX3.5LV6RearFederal and California Emissions; Direct Fit Converter

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