Dorman 674-424 Exhaust Manifold - Right

OE-Style Exhaust Manifold for Right Side Repair

Dorman 674-424 is a cast iron exhaust manifold engineered to match the fit and function of the original manifold on specified Ford and Lincoln vehicles. It includes the inlet and outlet gaskets needed for a complete exhaust repair, making it a direct replacement for right-side manifold service on the applications listed below.

Built for 2011-2016 Ford F-150, 2015-2020 Ford Transit-150, 2015-2020 Ford Transit-250, 2015-2020 Ford Transit-350, 2015-2020 Ford Transit-350 HD, 2015-2017 Ford Expedition, and 2015-2017 Lincoln Navigator, this Dorman 674-424 exhaust manifold is a practical OE-style solution for restoring exhaust sealing and flow on the passenger-side/right bank.

Key Features

• Cast iron construction for durability in high-heat exhaust service
• Natural finish with round port shape
• Right-side manifold for the listed Ford and Lincoln applications
• Includes inlet gasket and outlet gasket for sealing surfaces
• Eight mounting holes for OE-style attachment points
• No oxygen sensor port and no heat shield included
• Cross-reference: BL3Z9430B

Detailed Description

This exhaust manifold is precision-engineered to match the original part’s fit and function on the specified vehicles. The cast iron body and regular-grade construction are suited for exhaust manifold replacement where cracked, warped, or leaking factory components need to be addressed. Dorman 674-424 is designed for the right side on 2011-2016 Ford F-150, 2015-2020 Ford Transit-150, Transit-250, Transit-350, Transit-350 HD, 2015-2017 Ford Expedition, and 2015-2017 Lincoln Navigator.

For buyers searching for a right exhaust manifold for Ford F-150 2011-2016, or a replacement exhaust manifold for Ford Transit and Navigator applications, this part provides the core manifold plus the inlet and outlet gaskets needed to complete the repair. The part number 674-424 is also useful when cross-referencing OE number BL3Z9430B.

Common Repair Uses

• Fixing exhaust leaks at the manifold-to-cylinder-head or manifold-to-downpipe sealing surfaces
• Replacing a cracked or heat-damaged cast iron manifold
• Restoring proper exhaust routing on the right side of the engine
• Addressing ticking, hissing, or exhaust odor caused by manifold leakage
• Correcting warped flange or gasket sealing issues during exhaust service

Installation Notes and Tips

Verify engine-side and right-side fitment before installation, since this manifold is application-specific. Inspect the cylinder head and downpipe mating surfaces for damage, and replace any worn fasteners or related exhaust components as needed. Because the manifold does not include mounting hardware or a heat shield, confirm all required reuse parts are serviceable before beginning the repair.

Quality Assurance

Dorman manufactures this manifold to match original fit and function on the listed vehicles. The included gaskets support a complete sealing repair, and the cast iron construction is selected for exhaust-system durability in demanding operating conditions.