Dorman 03412 is an exhaust manifold hardware kit for replacing missing, damaged, or failed manifold fasteners on verified Ford, Lincoln, and Mercury applications. Built as standard replacement hardware, it helps secure the exhaust manifold to the engine with steel studs and matching steel nuts sized for M8-1.25 mm threads. The kit is a practical choice when manifold service, leak repair, or hardware corrosion leaves original fasteners unusable.

Dorman 03412 Technical Specifications:

• Matches the original-style hardware required to fasten the exhaust manifold to the engine on specified applications.
• Steel studs use a copper color finish, while the included steel nuts have a black finish for easy identification during installation.
• M8-1.25 mm thread sizing on the studs and nuts supports direct replacement where this thread specification is required.
• Stud length is 54.5 mm, with a listed overall length of 17.25 mm from the available product specifications.
• Standard replacement grade hardware is intended for exhaust manifold service without adding washers, springs, dog-point fasteners, or pilot-point fasteners.

Includes:

• 8 studs
• 8 nuts

Use during exhaust manifold replacement, manifold leak repair, or any service where the original studs or nuts are seized, missing, damaged, or no longer reusable. Confirm vehicle, engine, and position before installation because not every engine or trim within a model line is covered.

Verified fitment covers select Ford Econoline, Econoline Van, Econoline Wagon, Excursion, Expedition, Explorer, Explorer Sport Trac, F-150, F-150 Heritage, F-250, F-250 HD, F-250 Super Duty, F-350 Super Duty, and F-550 Super Duty models; Lincoln Navigator; and Mercury Mountaineer. Applications include 4.2L V6, 4.6L V8, 5.4L V8, 5.8L V8, 7.5L V8, and 6.8L V10 engines where specified by the catalog.