
Vehicle Specific
Check if it fits by entering your vehicle info| Brand | Dorman | 
| Part Number | 674-703 | 
| Part Description | Cast Iron Natural Exhaust Manifold | 
| Bolt Hole Quantity | 9 | 
| Finish | Natural | 
| Gasket or Seal Included | Yes | 
| Header Material | Cast Iron | 
| Inlet Port Shape | Oval | 
| Installation Hardware Included | Yes | 
| Item Grade | Standard Replacement | 
| UPC | 019495127420 | 
| OE Part Number | 12571601 | 
| Package Quantity | 1 | 
| Year Make Model | Trim | Engine | 
|---|---|---|
| 2004-2006 Chevrolet Colorado | All Trims | 5 Cyl 3.5L | 
| 2004-2006 GMC Canyon | All Trims | 5 Cyl 3.5L | 
| 2006 Hummer H3 | All Trims | 5 Cyl 3.5L |