Details

• Brand:

  

  

• SKU:

  N811313-S431

• Positions: Left Lower, Right Lower
• Other Names:

  Exhaust Manifold Stud, Lower Housing Stud, Stud

• Description:

  This is a genuine Ford OEM exhaust manifold stud carried under part number N811313-S431, used as the M8 hex point stud that secures the exhaust manifold to the cylinder head on a broad family of Ford modular V8, modular V10, and 3V V8 engines from 2001 through 2025. The stud is the same service fastener Ford catalogs for the 4.6L 2V and 3V applications, the 5.4L 2V and 3V applications, the 5.8L Shelby application, and the 6.8L V10 truck application, and appears across the Crown Victoria, E-150, E-250, E-350 Super Duty, F-150, Mustang, Town Car, and Explorer platforms within that engine family. Hex point geometry and the S431 suffix establish the head style and dimensional specification per Ford standard hardware convention. Exhaust manifold studs see high thermal cycling, and Ford specifies replacement with new hardware whenever the manifold is removed. Each stud is supplied to factory specifications for thread form, length, material grade, and finish, and is backed by the standard Ford and Motorcraft parts limited warranty when sold and used within the United States. Listing covers one stud. Application should be verified against the workshop manual for the specific engine before installation, and torque should be applied per the published service procedure for the application.

• Replaces:

  w701681s

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