Dorman 674-238 Left Exhaust Manifold 89-98 Chevy C5500 Kodiak GMC C7000 Topkick
Confirm Fitment Before You Buy
Not sure it fits? Message Year/Make/Model/Engine (2WD/4WD if applicable) and we’ll help confirm compatibility.
Why buy from Koskowski Automotive?
• 50+ years (since 1972) • Dorman Authorized Seller • Fast shipping • Easy returns
Regular price
$156.43
Select your vehicle at the top of the page to check fitment.
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Vehicle Fitment: Use the table below to match your exact configuration. If you don’t see your exact setup, message us before ordering.
Certain original equipment exhaust manifolds warp and crack due to lower-grade iron construction. This Dorman OE FIX replacement is made of high-grade ductile iron that better handles heat and stress for greater durability.
- Upgraded materials - this replacement exhaust manifold is constructed of ductile iron to prevent future warping and cracking
- Complete kit - includes new manifold, manifold gasket, flange gasket, 3 studs, 3 nuts and 3 springs
- Direct fit - reverse engineered from original equipment for seamless installation
- Quality engineering - designed and tested in the United States
Vehicle Fitment
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1996-1998 | Chevrolet | B7 | Left | 7.0L V8 |
| 1994 | Chevrolet | B7 | Left | 7.0L V8 |
| 1993-1998 | Chevrolet | B7 | Left | 6.0L V8 |
| 1990-1991 | Chevrolet | C5500 Kodiak | Left | |
| 1989-1990 | Chevrolet | C60 | Left | w/TBI; 6.0L V8 |
| 1990-1996 | Chevrolet | C60 Kodiak | Left | 7.0L V8 |
| 1990-1996 | Chevrolet | C60 Kodiak | Left | 6.0L V8 |
| 1997-1998 | Chevrolet | C6500 Kodiak | Left | 7.0L V8 |
| 1997-1998 | Chevrolet | C6500 Kodiak | Left | 6.0L V8 |
| 1990 | Chevrolet | C70 | Left | 6.0L V8 |
| 1989 | Chevrolet | C70 | Left | w/TBI; 6.0L V8 |
| 1990-1996 | Chevrolet | C70 Kodiak | Left | 7.0L V8 |
| 1990-1996 | Chevrolet | C70 Kodiak | Left | 6.0L V8 |
| 1997-1998 | Chevrolet | C7500 Kodiak | Left | 6.0L V8 |
| 1997-1998 | Chevrolet | C7500 Kodiak | Left | 7.0L V8 |
| 1992-1996 | Chevrolet | P6000 | Left | 6.0L V8 |
| 1992-1996 | Chevrolet | P6000 | Left | 7.0L V8 |
| 1997-1998 | Chevrolet | T6500 | Left | 6.0L V8 |
| 1997-1998 | Chevrolet | T7500 | Left | 6.0L V8 |
| 1993-1998 | GMC | B7 | Left | 7.0L V8 |
| 1993-1998 | GMC | B7 | Left | 6.0L V8 |
| 1990-1991 | GMC | C5000 Topkick | Left | |
| 1989-1990 | GMC | C6000 | Left | w/TBI; 6.0L V8 |
| 1990-1996 | GMC | C6000 Topkick | Left | 6.0L V8 |
| 1990-1996 | GMC | C6000 Topkick | Left | 7.0L V8 |
| 1997-1998 | GMC | C6500 Topkick | Left | 6.0L V8 |
| 1997-1998 | GMC | C6500 Topkick | Left | 7.0L V8 |
| 1990 | GMC | C7000 | Left | w/TBI; 6.0L V8 |
| 1989 | GMC | C7000 | Left | 6.0L V8 |
| 1990-1996 | GMC | C7000 Topkick | Left | 7.0L V8 |
| 1990-1996 | GMC | C7000 Topkick | Left | 6.0L V8 |
| 1997-1998 | GMC | C7500 Topkick | Left | 7.0L V8 |
| 1997-1998 | GMC | C7500 Topkick | Left | 6.0L V8 |
| 1992-1996 | GMC | P6500 | Left | 6.0L V8 |
| 1992-1996 | GMC | P6500 | Left | 7.0L V8 |
| 1997-1998 | GMC | T7500 | Left | 6.0L V8 |
Please confirm the part number and your vehicle's year, make, model and engine before ordering. Questions? Message us with your VIN and we'll check fitment for you.
Specifications
| Brand | Dorman |
|---|---|
| Part Number | 674-238 |
| UPC | 019495027263 |
| Placement | Left |
| Material | Cast Iron |
| Color | Metallic Gray |
| Mounting Hardware Included | Yes |
| Gasket Or Seal Included | Yes |
| Port Shape | Square |
| Grade Type | Standard Replacement |
| Heat Shield Included | No |
| Package Contents | Exhaust Manifold; 1 Manifold Gasket; 1 Flange Gasket; 3 Studs; 3 Nuts; 3 Springs |
| Country of Origin | India |
| Warranty | Limited Lifetime |
OE & Interchange Numbers
| 12551385 | General Motors (OE) |
|---|---|
| 651228 | Interchange |
| 662733 | Interchange |
| 101074 | Interchange |