Dorman 674-687 Exhaust Manifold - Left

OE-Style Exhaust Manifold Replacement

Dorman 674-687 is a standard replacement exhaust manifold engineered to match the fit and function of the original part on specified vehicles. It is built from cast stainless steel with a metallic gray finish and includes the gaskets needed for a complete exhaust manifold repair.

Compatible with left-side applications on 2013-2019 Ford Explorer, Ford Flex, and Ford Taurus, plus 2013-2019 Lincoln MKT and 2013-2016 Lincoln MKS. This part number 674-687 is a direct-fit option for drivers replacing a cracked, warped, or leaking manifold on these vehicles.

Key Features

• Cast stainless steel construction for exhaust durability
• Standard replacement design for OE fit and function
• Round port shape with a 1.25 in. collector port diameter
• No oxygen sensor port
• 12 mounting holes for vehicle-specific installation
• Gasket or seal included for repair completion
• Metallic gray finish

Detailed Product Overview

Dorman 674-687 is engineered for the left side of select Ford and Lincoln vehicles, including the Ford Explorer, Ford Flex, Ford Taurus, Lincoln MKT, and Lincoln MKS. The manifold is precision manufactured to align with the original exhaust routing and sealing surfaces, helping restore proper exhaust flow at the cylinder head and downpipe connection. Part number 674-687 also cross-references 663182 and DA5Z9431A for the same application.

Common Repair Symptoms

• Exhaust leak noise from the manifold area
• Visible cracking or warping in the original manifold
• Burnt exhaust smell near the engine bay
• Loss of exhaust sealing at the cylinder head
• Failed emissions or drivability concerns related to exhaust leakage

Installation Notes

Verify left-side fitment before installation and compare the port shape, mounting hole count, and collector dimensions to the original part. Clean the mating surfaces thoroughly and inspect the downpipe connection, studs, and fasteners before assembly. Because mounting hardware is not listed as included, reuse or replace related hardware as needed during the repair.

Quality Assurance

This Dorman exhaust manifold is manufactured as a standard replacement part to match original fit and function on the listed vehicles. The included gaskets support a complete sealing repair for compatible Ford and Lincoln applications.