Dorman - OE Solutions Exhaust Manifold with Integrated Catalytic Converter P/N:674-121
Collect exhaust gases from the cylinder head and treat them in a single bolt-on unit with the Dorman - OE Solutions Exhaust Manifold with Integrated Catalytic Converter 674-703. It drops in as a direct-fit replacement for the front exhaust position on the 2004-2006 Chevrolet Colorado, 2004-2006 GMC Canyon, 2006 Hummer H3, and 2006 Isuzu I-350, combining the manifold and converter so you replace both worn components together.
The manifold channels exhaust away from the head while the integrated converter processes the gases as they pass through. Signs this part may need replacing include exhaust leaks at the manifold, a rattle from a broken internal converter substrate, or an emissions-related fault code. Diagnose the cause first; if a cracked manifold or failed converter is the source of the issue, this assembly replaces it.
Interchange: 642196 · 101433 · 079-5184 · 0795184 · 19214 · 50428 · 12571601 · 8125922480 · 49353 · 50664 · 544006 · 16481
Manufacturer part number 674-703 (also 674703).
This part cross-references / interchanges with the following part numbers:
What is the Dorman 674-703?
It is an exhaust manifold with an integrated catalytic converter for the front exhaust position, combining the manifold and converter into a single bolt-on assembly.
Which vehicles does it fit?
It is a direct-fit replacement for the 2004-2006 Chevrolet Colorado, 2004-2006 GMC Canyon, 2006 Hummer H3, and 2006 Isuzu I-350. See the Buyer's Guide tab to confirm your vehicle.
Does it include the catalytic converter?
Yes. The catalytic converter is integrated into the manifold, so this one assembly covers both the exhaust manifold and the converter.
What numbers does this part replace?
It interchanges with 642196, 101433, 079-5184, 19214, 50428, 12571601, 8125922480, 49353, 50664, 544006, and 16481.
What are signs this part may need replacing?
Exhaust leaks at the manifold, a rattle from a broken internal converter substrate, or an emissions-related fault code. Diagnose the cause first before replacing.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.