HomeExhaust > Catalytic ConverterDorman 673-959 Catalytic Converter with Integrated Exhaust Manifold
Part #: 673-959

Dorman 673-959 Catalytic Converter with Integrated Exhaust Manifold

⚙️ 5 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Nissan, Altima and Sentra
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Overview of Dorman Catalytic Converter with Integrated Exhaust Manifold

The Dorman 673-959 catalytic converter with integrated exhaust manifold is designed specifically for Nissan Altima and Sentra models. This natural-colored, stainless steel converter meets California Air Resources Board (CARB) standards, ensuring compliance and reliable emissions control.

  • CARB certified with Executive Order Number D-665-23
  • Constructed from durable stainless steel for long-lasting performance
  • Includes inlet gasket for proper sealing
  • Features an oval-shaped inlet port for precise fitment
  • Equipped with 8 outlet mounting holes and necessary mounting hardware

Product Details and Specifications

The Dorman 673-959 catalytic converter combines the exhaust manifold and catalytic converter into a single unit, simplifying replacement and reducing installation time. Its stainless steel converter body resists corrosion and withstands high temperatures typical in exhaust systems. The included inlet gasket ensures a secure seal between the manifold and engine, while the 8 outlet mounting holes provide stable attachment points. This part is CARB certified, meeting strict emissions requirements for Nissan Altima and Sentra vehicles, making it suitable for use in states with stringent environmental regulations.

Compatible Nissan Models and Applications

This catalytic converter with integrated exhaust manifold is compatible with the following Nissan vehicles:

  • Nissan Altima
  • Nissan Sentra

It is designed to replace the original equipment part, restoring proper exhaust flow and emissions control.

Common Issues Addressed by This Part

  • Excessive exhaust emissions causing failed emissions tests
  • Damaged or cracked exhaust manifold leading to exhaust leaks
  • Reduced engine performance due to clogged or faulty catalytic converter
  • Check engine light triggered by oxygen sensor or emissions faults
  • Corrosion or rust compromising exhaust system integrity

Installation Notes and Tips

When installing the Dorman 673-959 catalytic converter with integrated exhaust manifold, ensure the inlet gasket is properly seated to prevent exhaust leaks. The oval inlet port shape requires alignment with the engine exhaust outlet. Use the included mounting hardware to secure the outlet flange firmly. It is recommended to inspect surrounding exhaust components for wear or damage during installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards. This catalytic converter with integrated exhaust manifold is CARB certified, confirming compliance with emissions regulations. While specific warranty details are not provided, Dorman typically offers limited warranties covering defects in materials and workmanship. Verify warranty terms with the product documentation or supplier.

BrandDorman
Part Number673-959
ColorNatural
Grade TypeRegular
California Air Resources Board (CARB) CertifiedYes
Inlet Gasket IncludedYes
Outlet Mounting Hole Quantity8
Outlet Mounting Hardware IncludedYes
Converter Body MaterialStainless steel
CARB Executive Order NumberD-665-23
Inlet Port ShapeOval
Package ContentsExhaust manifold; 1 manifold gasket; 1 flange gasket; 2 studs; 13

This part fits 5 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005NissanSentra2.5LL4N/ACARB Compliant: Yes; Sell Until Depleted; CARB Compliant: Yes
2004NissanSentra2.5LL4N/ACARB Compliant: Yes; Sell Until Depleted; CARB Compliant: Yes
2003NissanAltima2.5LL4N/ACARB Compliant: Yes; Sell Until Depleted; CARB Compliant: Yes
2003NissanSentra2.5LL4N/ACARB Compliant: Yes; Sell Until Depleted; CARB Compliant: Yes
2002NissanAltima2.5LL4N/ACARB Compliant: Yes; Sell Until Depleted; CARB Compliant: Yes

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

This part directly replaces or is cross-referenced with the following part numbers:

140028J00845201982554

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.