HomeExhaust > Catalytic ConverterEastern Convertors 40300 Catalytic Converter
Part #: 40300

Eastern Convertors 40300 Catalytic Converter

Direct Fit Converter
⚙️ 19 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Direct Fit Converter
🚗Fitment: Audi and Volkswagen, A4, A4 Quattro, and Passat
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Overview of Eastern Convertors Direct Fit Converter 40300

The Eastern Convertors Direct Fit Converter 40300 is designed specifically for select Audi and Volkswagen models, including the A4, A4 Quattro, and Passat. This catalytic converter meets federal EPA standards and offers a direct-fit undercarriage installation, ensuring compatibility and ease of replacement.

  • Federal / EPA direct-fit undercar catalytic converter
  • Eco III catalyst type for emission control
  • Includes 1 inlet gasket and 1 outlet gasket
  • 3 bolt welded inlet and outlet types
  • Equipped with 2 O2 sensor ports for accurate monitoring
  • Compatible with Audi A4, A4 Quattro, and Volkswagen Passat

Product Line Details: Direct Fit Converter

The Direct Fit Converter line by Eastern Convertors focuses on providing catalytic converters that match original equipment specifications for a straightforward replacement process. This product line emphasizes precise fitment and federal compliance, making it suitable for vehicles requiring EPA-certified parts without the need for additional modifications.

Detailed Product Description

The Eastern Convertors 40300 catalytic converter features an Eco III catalyst designed to reduce harmful emissions effectively. It is a federal EPA direct-fit undercar converter, meaning it is engineered to fit directly into the exhaust system of compatible vehicles without requiring custom adjustments. The converter includes one inlet gasket and one outlet gasket to ensure a proper seal during installation. Both the inlet and outlet connections use a 3 bolt welded flange design, providing a secure and reliable fit. Additionally, the converter has two O2 sensor ports, allowing for accurate oxygen sensor placement and optimal engine performance monitoring.

Common Applications and Issues Addressed

  • Replacement for damaged or clogged catalytic converters on Audi A4, A4 Quattro, and Volkswagen Passat
  • Restores proper emission control to meet federal EPA standards
  • Resolves check engine light issues related to catalytic converter failure
  • Improves exhaust flow and reduces harmful emissions
  • Supports vehicle compliance with emission testing requirements

Installation Notes and Tips

This catalytic converter is designed for direct-fit installation on compatible Audi and Volkswagen models. It requires no inlet or outlet hardware, so ensure existing mounting bolts and gaskets are in good condition or replaced as needed. The 3 bolt welded flange connections simplify alignment during installation. Proper torque specifications should be followed to avoid exhaust leaks. The two O2 sensor ports must be utilized to maintain accurate sensor readings and engine management.

Quality Assurance

Eastern Convertors manufactures the 40300 catalytic converter to meet federal EPA standards, ensuring reliable emission control performance. While this product is not CARB certified for California emissions, it complies with federal regulations. The Direct Fit Converter line is engineered for durability and consistent fitment. Warranty information should be confirmed with the distributor or manufacturer.

BrandEastern Convertors
Part Number40300
PositionDirect Fit Converter
Converter TypeFederal / epa direct-fit undercar
California Air Resources Board (CARB) CertifiedNo
Catalyst TypeEco iii
Inlet Gasket Quantity1
Inlet HardwareNone
Inlet Type A3 bolt welded
O2 Sensor Ports2
Outlet Gasket1
Outlet HardwareNone
Outlet Type A3 bolt welded

This part fits 19 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2006AudiA41.8LL4N/AFederal and California Emissions; Direct Fit Converter
2005AudiA41.8LL4N/AFederal and California Emissions; Direct Fit Converter
2005AudiA4 Quattro1.8LL4N/AFederal and California Emissions; Direct Fit Converter
2005VolkswagenPassat1.8LL4N/AFederal and California Emissions; Direct Fit Converter
2004AudiA41.8LL4N/AFederal and California Emissions; Direct Fit Converter
2004AudiA4 Quattro1.8LL4N/AFederal and California Emissions; Direct Fit Converter
2004VolkswagenPassat1.8LL4N/AFederal and California Emissions; Direct Fit Converter
2003AudiA41.8LL4N/AFederal and California Emissions; Direct Fit Converter
2003AudiA4 Quattro1.8LL4N/AFederal and California Emissions; Direct Fit Converter
2003VolkswagenPassat1.8LL4N/AFederal and California Emissions; Direct Fit Converter
2002AudiA41.8LL4N/AFederal and California Emissions; Direct Fit Converter
2002AudiA4 Quattro1.8LL4N/AFederal and California Emissions; Direct Fit Converter
2002VolkswagenPassat1.8LL4N/AFederal and California Emissions; Direct Fit Converter
2001AudiA41.8LL4N/AFederal and California Emissions; Direct Fit Converter
2001AudiA4 Quattro1.8LL4N/AFederal and California Emissions; Direct Fit Converter
2001VolkswagenPassat1.8LL4N/AFederal and California Emissions; Direct Fit Converter
2000VolkswagenPassat1.8LL4N/AFederal and California Emissions; Direct Fit Converter
1999VolkswagenPassat1.8LL4N/AFederal and California Emissions; Direct Fit Converter
1998VolkswagenPassat1.8LL4N/AFederal and California Emissions; Direct Fit Converter

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