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dorman 674-830 rear catalytic converter with integrated exhaust manifold for ford/mazda/mercury (non-carb compliant) - compatible models & reliable performance logo

Dorman 674-830 Rear Catalytic Converter with Integrated Exhaust Manifold for Ford/Mazda/Mercury (Non-CARB Compliant) - Compatible Models & Reliable Performance Review

4

·

Very good

Revainrating 4.5 out of 5  
Rating 
4.3
🌫️ Exhaust & Emissions, 🛠️ Replacement Parts

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Description of Dorman 674-830 Rear Catalytic Converter with Integrated Exhaust Manifold for Ford/Mazda/Mercury (Non-CARB Compliant) - Compatible Models & Reliable Performance

Direct replacement - this manifold converter is designed to match the fit and performance of the original equipment on specific vehicles. Convenient kit - includes gaskets and downpipe hardware to simplify installation. Durable construction -manufactured within strict tolerances for reliable longevity. Trustworthy value - backed by team of engineers and quality control experts in the United States. Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool.

Reviews

Global ratings 4
  • 5
    2
  • 4
    1
  • 3
    1
  • 2
    0
  • 1
    0

Type of review

Revainrating 4 out of 5

Works best in distributors and parts

No modifications required, good fit. About three hours after removing the old manifold, I was told that the replacement required no action other than replacing the 02 sensor.

Pros
  • distributor
Cons
  • troubles

Revainrating 5 out of 5

Extensive experience with exhaust and emissions

Product arrived early. All parts were in the box. My installer was able to get to work immediately. At the moment the machine works much better than before the failure of the original part.

Pros
  • Spare parts
Cons
  • Minor problems

Revainrating 3 out of 5

NO LIFETIME WARRANTY!

NO LIFETIME WARRANTY! One of the main reasons I chose them over others is the lifetime warranty. Well there isn't one. Warranty 5 years or 50,000 miles. As for the quality of the part, yes it probably works fine, but it looks like crap. Not at all like the picture.

Pros
  • Automotive
Cons
  • Slightly torn

Revainrating 5 out of 5

Fits and works well

Unlike the front cat, this one requires a PITA to be installed. It looks like the whole car is about to fall apart. NOx and CO are lower than last year with OE cat. The kit corresponds exactly to the old part. Looks high quality. Be sure to use new mounting nuts and bolts and lubricate them before installation. Cat comes with new downpipe bolts. I also installed new Denso oxygen sensors and coils/spark plugs. In the near future it is planned to install an aftermarket sport exhaust (Magnaflow…

Pros
  • Exhaust and Emissions
Cons
  • Can be damaged