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Dorman 674-831 Exhaust Manifold with Integrated Catalytic Converter, Non-CARB Compliant, Black - Boost Your Engine Performance Review

3

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Poor

Revainrating 2.5 out of 5  
Rating 
2.5
🌫️ Exhaust & Emissions, 🛠️ Replacement Parts

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Description of Dorman 674-831 Exhaust Manifold with Integrated Catalytic Converter, Non-CARB Compliant, Black - Boost Your Engine Performance

Direct replacement, exact-fit kit replaces the vehicle's factory installed exhaust manifold. Cast iron or stainless tubular construction protects against warping and/or cracking. Leak-resistant for long-lasting performance. A rigorous quality inspection has been undertaken to ensure that this part conforms to product standards. Original Equipment (OE) number: 5L8Z5G232EA, AJ03-20-50XD, AJ03-20-50XK, AJ03-20-50XL, AJ26-20-50X, AJ27-20-55X, AJ38-20-50XB, AJ38-20-55X, AJ50-20-55X, YL8Z 5G232-AA.

Reviews

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

Type of review

Revainrating 1 out of 5

Not Worth Your Automotive Investment

As a result of using this product, I found that it didn't perform as well as I expected. The installation process was a hassle and took longer than anticipated. The product also didn't seem to improve my vehicle's emissions as promised. On the other hand, the price was affordable, but I wouldn't recommend this product for any serious automotive upgrades.

Pros
  • Easy to install and fits perfectly with the vehicle.
Cons
  • Limited compatibility with certain car models.

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
  • Decent Performance
Cons
  • Functionality

Revainrating 5 out of 5

Fits and works well

Easy to install, just removing the A/C compressor. 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. I also replaced the rear coil but that's another review (Dorman 674-830), I'm planning on getting an aftermarket sport exhaust soon (Magnaflow Borla…

Pros
  • Heavy duty
Cons
  • Fits