
Vehicle Specific
Check if it fits by entering your vehicle info| Brand | Dorman | 
| Part Number | 674-738 | 
| Part Description | Cast Iron Natural Exhaust Manifold | 
| Finish | Natural | 
| Flange Bolt Hole Quantity | 0 | 
| Flange Stud Hole Quantity | 3 | 
| Gasket or Seal Included | Yes | 
| Header Material | Cast Iron | 
| Heat Shield Included | No | 
| Inlet Port Shape | Square | 
| Installation Hardware Included | Yes | 
| Item Grade | Regular | 
| Manifold Bolt Hole Quantity | 8 | 
| UPC | 019495212980 | 
| OE Part Number | 12562999, 12563000 | 
| Package Quantity | 1 | 
| Position | Passenger Side | 
| Year Make Model | Trim | Engine | 
|---|---|---|
| 1998-1999 Chevrolet P30 | All Trims | 8 Cyl 7.4L | 
| 1998-1999 GMC P3500 | All Trims | 8 Cyl 7.4L |