Dorman 674-161 Right Exhaust Manifold 85-97 GMC C2500 Chevy C20 Suburban
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
$126.11
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.
This exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the original manifold on specified vehicles. It includes all necessary gaskets and downpipe hardware for a complete repair.
- Ideal replacement - this exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the stock manifold on specified vehicles
- Reliable construction - durable materials resist warping, cracking and leaking for long-lasting performance
- Complete repair - includes all necessary gaskets and downpipe hardware
- Trustworthy design - built by industry leader in aftermarket manifolds
Vehicle Fitment
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1985-1986 | Chevrolet | C20 | Right | 7.4L V8; Cast Iron |
| 1985-1986 | Chevrolet | C20 Suburban | Right | 7.4L V8; Cast Iron |
| 1985-1986 | Chevrolet | C30 | Right | 7.4L V8; Cast Iron |
| 1992-1996 | Chevrolet | G30 | Right | 7.4L V8 |
| 1988 | Chevrolet | G30 | Right | 7.4L V8 |
| 1985 | Chevrolet | K20 Suburban | Right | 7.4L V8; Cast Iron |
| 1985-1986 | Chevrolet | K30 | Right | 7.4L V8; Cast Iron |
| 1991-1997 | Chevrolet | P30 | Right | 7.4L V8 |
| 1987-1988 | Chevrolet | R20 | Right | 7.4L V8; Cast Iron |
| 1987-1988 | Chevrolet | R20 Suburban | Right | 7.4L V8; Cast Iron |
| 1989 | Chevrolet | R2500 | Right | 7.4L V8; Cast Iron |
| 1989-1991 | Chevrolet | R2500 Suburban | Right | 7.4L V8; Cast Iron |
| 1987-1988 | Chevrolet | R30 | Right | 7.4L V8; Cast Iron |
| 1989-1991 | Chevrolet | R3500 | Right | 7.4L V8; Cast Iron |
| 1987-1988 | Chevrolet | V20 Suburban | Right | 7.4L V8; Cast Iron |
| 1990 | Chevrolet | V2500 Suburban | Right | 7.4L V8; Cast Iron |
| 1987-1988 | Chevrolet | V30 | Right | 7.4L V8; Cast Iron |
| 1989-1991 | Chevrolet | V3500 | Right | 7.4L V8; Cast Iron |
| 1985-1986 | GMC | C2500 | Right | 7.4L V8; Cast Iron |
| 1985-1986 | GMC | C2500 Suburban | Right | 7.4L V8; Cast Iron |
| 1985-1986 | GMC | C3500 | Right | 7.4L V8; Cast Iron |
| 1992-1996 | GMC | G3500 | Right | 7.4L V8 |
| 1988 | GMC | G3500 | Right | 7.4L V8 |
| 1985-1986 | GMC | K3500 | Right | 7.4L V8; Cast Iron |
| 1991-1997 | GMC | P3500 | Right | 7.4L V8 |
| 1987-1989 | GMC | R2500 | Right | 7.4L V8; Cast Iron |
| 1987-1991 | GMC | R2500 Suburban | Right | 7.4L V8; Cast Iron |
| 1987-1991 | GMC | R3500 | Right | 7.4L V8; Cast Iron |
| 1987-1991 | GMC | V3500 | Right | 7.4L V8; Cast Iron |
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 | 674-161 |
| UPC | 019495017660 |
| Placement | Right |
| 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 | Yes |
| Package Contents | Exhaust Manifold; 1 Manifold Gasket and 1 Flange; 6 Studs; 3 Nuts; 3 Springs; 3 Washers |
| Country of Origin | China |
| Warranty | Limited Lifetime |
OE & Interchange Numbers
| 12551443 | General Motors (OE) |
|---|---|
| 651151 | Interchange |
| 662656 | Interchange |
| 101327 | Interchange |
| 101071 | Interchange |