Item Details

Exhaust Manifold

Exhaust Manifold Kit - Includes Required Gaskets And Hardware | 674-446 | Exhaust Manifold Kit - Includes Required Gaskets And Hardware | 674-446 | Front ViewExhaust Manifold Kit - Includes Required Gaskets And Hardware | 674-446 | Back ViewExhaust Manifold Kit - Includes Required Gaskets And Hardware | 674-446 | Top ViewExhaust Manifold Kit - Includes Required Gaskets And Hardware | 674-446 | 3/4 TopMake Dorman your exhaust manifold repair solution | 674-446Why Choose Dorman's Exhaust Manifolds? | 674-446360 View | 674-446

674-446

Exhaust Manifold Kit - Includes Required Gaskets And Hardware

Application Summary: Chevrolet 2003-96, GMC 2003-96, Isuzu 2003-96, Workhorse 2005-00, Workhorse Custom Chassis 2004-00

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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

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
Port Shape: Square

OE Numbers

DIRECT OE CROSS
12554981 GENERAL MOTORS
8-12554-981-0 ISUZU
8-93802-337-0 ISUZU
93802337 GENERAL MOTORS

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Exhaust Manifold Kit - Includes Required Gaskets And Hardware