HomeExhaust > Catalytic ConverterAP Exhaust 642103 Catalytic Converter - Front
Part #: 642103

AP Exhaust 642103 Catalytic Converter - Front

Front
⚙️ 13 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford and Mazda, B4000 and Ranger
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AP Exhaust Catalytic Converter for Ford B4000 and Mazda Ranger

The AP Exhaust catalytic converter part number 642103 is designed as a direct-fit replacement for Ford B4000 and Mazda Ranger models. Constructed with durable stainless steel and a ceramic substrate, this federal/EPA compliant converter ensures reliable emissions control and long-lasting performance.

Key Features of AP Exhaust Catalytic Converter 642103

  • Body material made from corrosion-resistant stainless steel
  • Federal/EPA direct-fit design for precise installation
  • Four O2 sensor ports for accurate emissions monitoring
  • Inlet and outlet connections feature 2 bolt loose flanges with 2.50" female flare and 3 bolt welded flanges
  • Overall length approximately 30.5 to 30.75 inches for proper fitment
  • Includes one outlet gasket; no inlet gasket required
  • Ceramic substrate for effective catalytic conversion

Detailed Product Description

This AP Exhaust catalytic converter (part number 642103) is engineered specifically for Ford B4000 and Mazda Ranger vehicles, providing a direct-fit replacement that meets federal and EPA emissions standards. The stainless steel body offers resistance to rust and corrosion, extending the life of the converter under harsh operating conditions. The ceramic substrate inside efficiently converts harmful exhaust gases into less harmful emissions.

The converter features four O2 sensor ports, allowing for precise monitoring of exhaust gases to maintain optimal engine performance and emissions control. The inlet connections utilize a 2 bolt loose flange with a 2.50" female flare, while the outlet uses a 3 bolt welded flange, ensuring compatibility with the factory exhaust system. An outlet gasket is included to ensure a proper seal, while no inlet gasket or hardware is required for installation.

Common Applications and Issues Addressed

  • Replacement for damaged or clogged catalytic converters on Ford B4000 and Mazda Ranger
  • Restores proper emissions control to pass state and federal inspections
  • Reduces exhaust emissions to meet EPA standards
  • Improves engine performance by restoring exhaust flow
  • Eliminates exhaust leaks caused by worn or cracked converters

Installation Notes and Tips

This catalytic converter is designed for direct-fit installation on compatible Ford B4000 and Mazda Ranger models. No inlet gasket or hardware is required, but one outlet gasket is included to ensure a secure seal. Proper torque specifications should be followed for the 2 bolt loose flange inlet and 3 bolt welded flange outlet connections. It is recommended to inspect O2 sensors and replace if necessary during installation to maintain accurate emissions readings.

Quality Assurance and Warranty

AP Exhaust catalytic converters are manufactured to meet federal and EPA emissions requirements. The stainless steel construction and ceramic substrate provide durability and reliable performance. While specific warranty details are not provided, AP Exhaust products typically adhere to industry standards for quality and compliance.

BrandAP Exhaust
Part Number642103
Body MaterialStainless steel
Inlet GasketNot required
Inlet Gasket QtyNone
Inlet HardwareNone
Inlet Type A2 bolt loose flange w/ 2.50" female flare
Inlet Type A2 bolt spinner
Inlet Type B2 bolt loose flange w/ 2.50" female flare
Inlet Type B2 bolt spinner
O2 Sensor Ports4
Outlet GasketYes
Outlet Gasket Qty1
Outlet HardwareNone
Outlet Type A3 bolt welded
Outlet Type A3 bolt welded flange
Overall Length (IN)30.5
Overall Length (IN)30.75
Substrate MaterialCeramic
TypeFederal / epa direct-fit

This part fits 13 vehicles. Search below:

YearMakeModelLitersCylindersWheel BasePositionNotes
2006FordRanger4.0LV6N/ADirect Fit; Front Complete 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.
2006MazdaB40004.0LV6125.9"N/ADirect Fit Pre-Cat; (04-06); 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.
2006MazdaB40004.0LV6N/ADirect Fit; Front Complete 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.
2005FordRanger4.0LV6111.5"FrontDirect Fit Pre-Cat; (04-06, 4.0L); 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.
2005FordRanger4.0LV6117.5"FrontDirect Fit Pre-Cat; (04-06, 4.0L); 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.
2005FordRanger4.0LV6125.7"FrontDirect Fit Pre-Cat; (04-06, 4.0L); 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.
2005FordRanger4.0LV6N/ADirect Fit; Front Complete 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.
2005MazdaB40004.0LV6125.9"N/ADirect Fit Pre-Cat; (04-06); 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.
2005MazdaB40004.0LV6N/ADirect Fit; Front Complete 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.
2004FordRanger4.0LV6N/ADirect Fit; Front Complete 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.
2004MazdaB40004.0LV6125.7"N/ADirect Fit Pre-Cat; (04-06); 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.
2004MazdaB40004.0LV6125.9"N/ADirect Fit Pre-Cat; (04-06); 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.
2004MazdaB40004.0LV6N/ADirect Fit; Front Complete 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.

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