Review on Dorman 674-659 Exhaust Manifold with Integrated Catalytic Converter: Non-CARB Compliant | Best Deals by Chris Ostby

The device fits the car perfectly. (+1 star) The assembly kit contains most of the parts needed for assembly (+1 star). Kit does not include lower mounting bolt or new manifold nuts. There are two lambda probe plugs (-1 star). The additional second can be plugged with an M18x1.5 drain plug, available in Midwest Fastener Nuts and Bolts at your local hardware store. The one for the sensor is too far from the connector attachment point (-1 star). I bought new heat shields from the dealer (the only ones I could find at the time). The outer heat shields have rounded some of the holes to align the screws. Internal heat protection never fitted (-1 star). Only one of the four holes fit. One bolt was too long, and after it was completely removed, the kinks and kinks still didn't allow the shield to be installed. With the new lambda sensors, it was worth it if it passed the test. It would be much better if the internal heat shield was at least close to being able to be installed. The fiction is too far fetched to be acceptable in my eyes.