Dorman 03412 Exhaust Manifold Hardware Kit

Exhaust Manifold Hardware for Ford and Lincoln

Dorman 03412 is an exhaust manifold hardware kit built to match the original fasteners used to secure the exhaust manifold to the engine on specified Ford, Lincoln, and Mercury vehicles. It uses steel construction with copper-colored studs and black steel nuts for a standard replacement that supports a proper manifold-to-engine connection.

• Direct replacement exhaust manifold hardware for specified applications
• Steel studs with copper finish and steel black nuts
• M8-1.25 thread size on both ends
• Standard replacement item grade for OE-style service work
• Matches original hardware requirements for manifold retention
• Cross-reference: Ford W701706S2 for the same application

Product Details

This Dorman exhaust manifold hardware kit, part number 03412, is made for repair work where the original manifold fasteners need to be replaced with hardware that matches the factory fit and thread specification. The kit uses steel studs rated Grade 5, steel nuts, and A-2 bolt grade hardware, with no spring or washer included. It is a practical choice for servicing exhaust manifold mounting points on Ford E-350 Super Duty, Ford F-150, Ford Expedition, Lincoln Navigator, and related applications listed in the fitment data.

Compatible With 1997-2010 Ford F-150, N/A; 1999-2010 Ford F-250 Super Duty, N/A; 1999-2010 Ford F-350 Super Duty, N/A; 1997-2004 Ford Expedition, N/A; 1998-2014 Lincoln Navigator, N/A; and additional Ford E-Series and related models. Dorman 03412 is also referenced by part number W701706S2 for the same application.

Common Repair Uses

• Replacing damaged or corroded exhaust manifold fasteners
• Restoring a secure manifold-to-engine mounting point
• Addressing exhaust leaks caused by worn hardware
• Repairing stripped or weakened manifold studs and nuts
• Servicing exhaust manifold hardware during engine or exhaust repairs

Installation Notes

Verify thread size M8-1.25 before installation and confirm vehicle-specific fitment for your Ford, Lincoln, or Mercury application. Clean the mounting surfaces and inspect the manifold and cylinder head threads before assembly. Use the correct tightening sequence and torque specification for the engine platform to help achieve an even seal.

Quality Assurance

Dorman manufactures this hardware kit as a standard replacement part made from quality materials for reliable performance. It is engineered to match the original hardware requirements for the specified vehicles and applications.