Dorman 674-671 Exhaust Manifold - Left

Brand Dorman 674-671
Position Left
Color Natural
Gasket Or Seal Included Yes
Grade Type Regular
Heat Shield Included No
Material Cast Iron
Mounting Hardware Included Yes
Package Contents Exhaust Manifold; 1 Manifold Gasket; 1 Flange Gasket; 2 Studs
Port Shape Rectangle
Fits Cadillac · 12 vehicles

OE direct replacement. Precision-engineered to match the original manifold's fit and function.

Cast iron construction. Durably manufactured for dependable exhaust performance.

Complete repair kit. Includes all necessary gaskets and downpipe hardware.

Cross-references 101354 and 3527189 for the same application. See all 2.

$446.48Free shipping
In stock · usually ships same day before 1pm CST
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Dorman 674-671 Exhaust Manifold for Cadillac Left Side

Dorman 674-671 is a cast iron exhaust manifold engineered to match the fit and function of the original manifold on specified Cadillac applications. It includes the gaskets and downpipe hardware needed for a complete repair, making it a direct replacement for left-side service on select Cadillac DeVille, Eldorado, Seville, and Allante models.

Key Features

  • Cast iron construction for exhaust durability
  • Natural finish with rectangle port shape
  • Includes gasket and seal components for the repair
  • Mounting hardware included
  • Direct-fit replacement for the original manifold on listed vehicles
  • Part number: 674-671

Product Details

This exhaust manifold is precision-engineered to restore the original exhaust routing and sealing surface on the left side of the engine. It is built for 1989-1995 Cadillac applications, including 1994-1995 Cadillac DeVille, 1991-1993 Cadillac Eldorado, 1991-1993 Cadillac Seville, and 1989-1992 Cadillac Allante. The Dorman 674-671 uses a cast iron body and rectangle port design to match the factory configuration, and it ships with the manifold gasket, flange gasket, and studs needed for the repair. This part cross-references 101354 and 3527189 for the same application.

Common Repair Applications

  • Cracked or warped exhaust manifold on a Cadillac DeVille left side
  • Exhaust leaks at the manifold-to-cylinder-head sealing surface
  • Broken or missing manifold studs during exhaust service
  • Flange sealing issues at the downpipe connection
  • Noise, odor, or performance loss caused by manifold leakage

Installation Notes

Fits 1994-1995 Cadillac DeVille, left; 1991-1993 Cadillac Eldorado, left; 1991-1993 Cadillac Seville, left; and 1989-1992 Cadillac Allante, left. Verify engine-side and exhaust-side alignment before installation, and inspect the mating surfaces for damage or carbon buildup. Replace worn fasteners and clean the sealing surfaces to help ensure proper gasket seating. Confirm left-side placement before ordering, since this manifold is not listed for other positions.

Quality Assurance

Dorman manufactures this manifold as a regular-grade replacement part built to match original fit and function on the listed Cadillac vehicles. The included gaskets and hardware support a complete exhaust manifold repair using the correct application-specific components.

This part fits 12 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1995CadillacDeVille4.9LV8Left
1994CadillacDeVille4.9LV8Left
1993CadillacEldorado4.9LV8Left
1993CadillacSeville4.9LV8Left
1992CadillacAllanteLeft
1992CadillacEldoradoLeft
1992CadillacSevilleLeft
1991CadillacAllanteLeft
1991CadillacEldoradoLeft
1991CadillacSevilleLeft
1990CadillacAllanteLeft
1989CadillacAllanteLeft
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
1013543527189