Dorman 674-859 Exhaust Manifold - Left

Brand Dorman 674-859
Position Left
Color Natural
Gasket Or Seal Included Yes
Grade Type Regular
Heat Shield Included Yes
Material Cast Iron
Mounting Hardware Included Yes
Package Contents Exhaust Manifold; 1 Manifold Gasket; 3 Studs; 3 Nuts
Port Shape Round
Fits Workhorse

OE-style replacement. Precision-engineered to match original fit and function.

Cast iron construction. Durably manufactured for dependable exhaust sealing and strength.

Complete repair kit. Includes gaskets, heat shield, and necessary hardware.

Cross-references ATP 101459, 12570671 and 8125706710 for the same application. See all 3.

$172.08Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $172.08
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Dorman 674-859 Exhaust Manifold

Dorman 674-859 is a cast iron exhaust manifold engineered to match the fit and function of the original manifold on specified vehicles. It is built for a direct repair and includes the gasket, heat shield, and downpipe hardware needed for a complete exhaust manifold replacement.

Key Features

  • Cast iron construction for durable exhaust service
  • Natural finish with a round port shape
  • Includes gasket or seal for the repair
  • Heat shield included
  • Mounting hardware included
  • Package contents: exhaust manifold, 1 manifold gasket, 3 studs, and 3 nuts

Detailed Description

This exhaust manifold is designed as an OE-style replacement for vehicles that require a direct-fit manifold assembly. Dorman 674-859 follows the original fit and function profile, making it a practical choice for exhaust repairs where the factory manifold has cracked, warped, or developed leaks. For buyers searching for an exhaust manifold for Dorman 674-859 applications, this part provides the core components needed to restore proper exhaust routing and sealing. It also cross-references ATP 101459 for the same application.

Use this part when servicing exhaust manifold replacement needs on specified make/model applications. Search terms such as exhaust manifold replacement for Dorman 674-859, cast iron exhaust manifold with heat shield, and direct-fit manifold repair for specified vehicles align with this product’s design and included components.

What It Helps Fix

  • Exhaust leaks at the manifold-to-cylinder-head sealing surface
  • Cracked or warped factory exhaust manifold housings
  • Broken or missing manifold mounting studs and nuts
  • Noise from leaking exhaust gases near the engine
  • Heat-related damage around the manifold area

Installation Notes and Tips

Replace the manifold on the correct engine-side location for the vehicle listed in the fitment data. Clean the cylinder-head mating surface before installation, inspect the downpipe connection, and follow factory torque specifications during assembly. Because this part includes the gasket and mounting hardware, it supports a more complete exhaust manifold repair on compatible applications.

Quality Assurance

Dorman manufactures this manifold to match original fit and function on specified vehicles. The cast iron construction and included heat shield support durable service in a high-temperature exhaust environment.

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ATP — 101459125706718125706710