Dorman 674-694XD Exhaust Manifold - Right

Dorman 674-694XD Exhaust Manifold

The Dorman 674-694XD exhaust manifold is a right-side replacement for select Ford and Lincoln trucks and SUVs with ceramic coating. It uses cast iron construction and a metallic gray finish to support even heat distribution and smoother exhaust gas flow in demanding exhaust applications.

Key Features

• Cast iron exhaust manifold with a ceramic-coated surface
• Round port shape with a 1.5-inch collector port diameter
• Right-side placement for select Ford F-150, Expedition, F-250 Super Duty, F-350 Super Duty, Lincoln Navigator, and Lincoln Mark LT applications
• Standard replacement grade for direct-fit exhaust service
• Mounting hardware and gasket or seal included
• No oxygen sensor port and no heat shield included
• Part number 674-694XD for catalog and fitment reference

Detailed Description

This exhaust manifold is built for vehicles that need a direct replacement on the right side of the engine. The ceramic coating helps distribute heat more evenly across the manifold surface, which can reduce thermal stress and support longer service life compared with an uncoated replacement. The cast iron body, 4.5 mm tube wall thickness, and round port design make it a practical OE-style solution for exhaust repair on the 2004-2009 Ford F-150, 2005-2009 Ford Expedition, 2005-2009 Ford F-250 Super Duty, 2005-2009 Ford F-350 Super Duty, 2005-2009 Lincoln Navigator, and 2006-2008 Lincoln Mark LT, right side. This part number 674-694XD is also listed as a cross-reference to 3L3Z9430DA for the same application.

Common Issues This Part Can Address

• Cracked or warped exhaust manifold on the right side
• Exhaust leaks at the manifold-to-cylinder-head sealing surface
• Uneven exhaust flow caused by heat-related manifold damage
• Noise from a leaking manifold during cold start or acceleration
• Replacement needs after corrosion or thermal fatigue

Installation Notes and Tips

Verify right-side fitment before ordering and confirm the vehicle uses the ceramic-coated application listed for your year, make, and model. Inspect the cylinder-head sealing surface, fasteners, and exhaust connections before installation. Because this manifold does not include an oxygen sensor port, confirm sensor location and exhaust routing on the vehicle before service. Use the included gasket or seal and mounting hardware during installation, and follow factory torque specifications.

Quality Assurance

Dorman supplies this manifold as a standard replacement part with ceramic coating for improved heat management. The design focuses on direct-fit service for the listed Ford and Lincoln applications, including 2004-2009 Ford F-150, 2005-2009 Ford Expedition, and related right-side fitments.