HomeExhaust > Catalytic ConverterDorman 673-818 Catalytic Converter with Integrated Exhaust Manifold - Right
Part #: 673-818

Dorman 673-818 Catalytic Converter with Integrated Exhaust Manifold - Right

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⚙️ 4 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, Frontier and Xterra
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Reliable Catalytic Converter with Integrated Exhaust Manifold

The Dorman 673-818 catalytic converter with integrated exhaust manifold is designed to meet emissions standards while providing a durable replacement for Nissan Frontier and Xterra models. This natural-colored converter offers a precise fit and quality materials to ensure long-lasting performance.

  • Compatible with Nissan Frontier and Nissan Xterra vehicles
  • CARB certified with Executive Order Number D-798 for California emissions compliance
  • Constructed from cast iron and stainless steel for durability
  • Includes inlet gasket and mounting hardware for secure installation
  • Features one inlet and one outlet with flanged outlet type
  • Equipped with two sensor ports for oxygen sensors
  • Overall length of 18 inches and converter body length of 8 inches
  • Inlet port is round with 8 mounting holes; outlet has 3 mounting holes

Product Details and Specifications

The Dorman 673-818 catalytic converter integrates the exhaust manifold and converter body into a single unit, simplifying replacement on compatible Nissan Frontier and Xterra models. Its natural finish and regular grade type construction combine cast iron and stainless steel materials to withstand high temperatures and corrosive exhaust gases. The converter features a flanged outlet and a round inlet port, designed with multiple mounting holes (8 on the inlet and 3 on the outlet) to ensure a secure fit. Two sensor ports accommodate oxygen sensors, maintaining proper engine management and emissions control. The package includes an inlet gasket and mounting hardware to facilitate installation.

Common Applications and Problem Resolution

  • Replaces faulty or clogged catalytic converters causing poor emissions performance
  • Addresses exhaust leaks at the manifold or converter connection points
  • Restores proper oxygen sensor readings for engine efficiency
  • Meets California Air Resources Board (CARB) requirements for emissions compliance
  • Eliminates rattling or damage from cracked or broken exhaust manifolds

Installation Notes and Tips

When installing the Dorman 673-818 catalytic converter with integrated exhaust manifold, ensure all mounting surfaces are clean and free of debris. Use the included inlet gasket and mounting hardware to secure the unit firmly. Verify oxygen sensor placement in the two sensor ports to maintain accurate emissions monitoring. Proper torque specifications should be followed to prevent exhaust leaks and ensure a tight seal. This part is designed specifically for Nissan Frontier and Xterra models, so confirm vehicle compatibility before installation.

Quality Assurance and Certification

This catalytic converter with integrated exhaust manifold is CARB certified under Executive Order Number D-798, ensuring compliance with California emissions standards. Manufactured with durable cast iron and stainless steel materials, it is engineered to provide reliable performance and longevity. The part number 673-818 corresponds to a direct-fit replacement designed to meet or exceed OEM specifications for Nissan Frontier and Xterra vehicles.

BrandDorman
Part Number673-818
ColorNatural
Grade TypeRegular
Converter Body Length8
Outlet TypeFlanged
Inlet Quantity1
Outlet Quantity1
California Air Resources Board (CARB) CertifiedYes
Inlet Mounting Hole Quantity8
Inlet Gasket IncludedYes
Inlet Mounting Hardware IncludedYes
Outlet Mounting Hole Quantity3
Outlet Mounting Hardware IncludedYes
Overall Length18
Air Tube Count0
Sensor Port Count2
Converter Body MaterialCast iron/stainless steel
CARB Executive Order NumberD-798
Inlet Port ShapeRound
Package Contents1 exhaust manifold; 1 inlet gasket; 1 outlet gasket; 10 bolts; 3

This part fits 4 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2004NissanXterra3.3LV6RightCARB Compliant: Yes; CARB Compliant: Yes
2003NissanXterra3.3LV6RightCARB Compliant: Yes; CARB Compliant: Yes
2002NissanFrontier3.3LV6RightCARB Compliant: Yes; CARB Compliant: Yes
2002NissanXterra3.3LV6RightCARB Compliant: Yes; 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:

140029S200

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