Dorman 674-446 Exhaust Manifold
Regular price
$122.91
Couldn't load pickup availability
Product Description
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
- Direct fit - reverse engineered from original equipment for seamless installation
- Quality engineering - designed and tested in the United States
Detailed Applications
| Year | Make | Model | Configuration | Positions | Application Notes |
|---|---|---|---|---|---|
| 2005 | Workhorse | FasTrack FT1261 | V8 350 5.7L; GAS | Right | |
| 2005 | Workhorse | FasTrack FT1461 | V8 350 5.7L; GAS | Right | |
| 2005 | Workhorse | FasTrack FT1601 | V8 350 5.7L; GAS | Right | |
| 2005 | Workhorse | P30 | V8 350 5.7L; GAS | Right | |
| 2004 | Workhorse | FasTrack FT1061 | V8 350 5.7L; GAS | Right | |
| 2004 | Workhorse | FasTrack FT1261 | V8 350 5.7L; GAS | Right | |
| 2004 | Workhorse | FasTrack FT1461 | V8 350 5.7L; GAS | Right | |
| 2004 | Workhorse | FasTrack FT1601 | V8 350 5.7L; GAS | Right | |
| 2004 | Workhorse | FasTrack FT1801 | V8 350 5.7L; GAS | Right | |
| 2004 | Workhorse | P30 | V8 350 5.7L; GAS | Right | |
| 2004 | Workhorse Custom Chassis | P42 | V8 350 5.7L; GAS | Right | |
| 2003 | Chevrolet | W3500 Tiltmaster | V8 350 5.7L; GAS | Right | |
| 2003 | Chevrolet | W4500 Tiltmaster | V8 350 5.7L; GAS | Right | |
| 2003 | GMC | W3500 Forward | V8 350 5.7L; GAS | Right | |
| 2003 | GMC | W4500 Forward | V8 350 5.7L; GAS | Right | |
| 2003 | Isuzu | NPR | V8 350 5.7L; GAS | Right | |
| 2003 | Isuzu | NPR-HD | V8 350 5.7L; GAS | Right | |
| 2003 | Workhorse | FasTrack FT1061 | V8 350 5.7L; GAS | Right | |
| 2003 | Workhorse | FasTrack FT1261 | V8 350 5.7L; GAS | Right | |
| 2003 | Workhorse | FasTrack FT1461 | V8 350 5.7L; GAS | Right | |
| 2003 | Workhorse | FasTrack FT1601 | V8 350 5.7L; GAS | Right | |
| 2003 | Workhorse | FasTrack FT1801 | V8 350 5.7L; GAS | Right | |
| 2003 | Workhorse | FasTrack FT1802 | V8 350 5.7L; GAS | Right | |
| 2003 | Workhorse | P30 | V8 350 5.7L; GAS | Right | |
| 2003 | Workhorse Custom Chassis | P42 | V8 350 5.7L; GAS | Right | |
| 2002 | Chevrolet | Express 1500 | V8 305 5.0L | Right | |
| 2002 | Chevrolet | Express 1500 | V8 350 5.7L | Right | wo/California Emissions |
| 2002 | Chevrolet | Express 2500 | V8 305 5.0L | Right | |
| 2002 | Chevrolet | Express 2500 | V8 350 5.7L | Right | wo/California Emissions |
| 2002 | Chevrolet | Express 3500 | V8 350 5.7L | Right | wo/California Emissions |
| 2002 | Chevrolet | W3500 Tiltmaster | V8 350 5.7L; GAS | Right | |
| 2002 | Chevrolet | W4500 Tiltmaster | V8 350 5.7L; GAS | Right | |
| 2002 | GMC | Savana 1500 | V8 305 5.0L | Right | |
| 2002 | GMC | Savana 1500 | V8 350 5.7L | Right | wo/California Emissions |
| 2002 | GMC | Savana 2500 | V8 305 5.0L | Right | |
| 2002 | GMC | Savana 2500 | V8 350 5.7L | Right | wo/California Emissions |
| 2002 | GMC | Savana 3500 | V8 350 5.7L | Right | wo/California Emissions |
| 2002 | GMC | W3500 Forward | V8 350 5.7L; GAS | Right | |
| 2002 | GMC | W4500 Forward | V8 350 5.7L; GAS | Right | |
| 2002 | Isuzu | NPR | V8 350 5.7L; GAS | Right | |
| 2002 | Isuzu | NPR-HD | V8 350 5.7L; GAS | Right | |
| 2002 | Workhorse | FasTrack FT1061 | V8 350 5.7L; GAS | Right | |
| 2002 | Workhorse | FasTrack FT1261 | V8 350 5.7L; GAS | Right | |
| 2002 | Workhorse | FasTrack FT1460 | V8 350 5.7L; GAS | Right | |
| 2002 | Workhorse | FasTrack FT1461 | V8 350 5.7L; GAS | Right | |
| 2002 | Workhorse | FasTrack FT1601 | V8 350 5.7L; GAS | Right | |
| 2002 | Workhorse | FasTrack FT1801 | V8 350 5.7L; GAS | Right | |
| 2002 | Workhorse | FasTrack FT1802 | V8 350 5.7L; GAS | Right | |
| 2002 | Workhorse | P30 | V8 350 5.7L; GAS | Right | |
| 2002 | Workhorse | P32 | V8 350 5.7L; GAS | Right |
Product Specifications
| Color: | Metallic Gray |
|---|---|
| Gasket Or Seal Included: | Yes |
| Grade Type: | Standard Replacement |
| Heat Shield Included: | No |
| Material: | Cast Iron |
| Mounting Hardware Included: | Yes |
| Package Contents: | Exhaust Manifold; 1 Manifold Gasket; 1 Flange Gasket; 3 Studs; 3 Nuts |
| Package Quantity: | 1 |
| Packaging Type: | Box |
| Port Shape: | Square |
OE Numbers
| DIRECT OE CROSS | |
|---|---|
| 12554981 | GENERAL MOTORS |
| 8-12554-981-0 | ISUZU |
| 8-93802-337-0 | ISUZU |
| 93802337 | GENERAL MOTORS |