OEM Mechanical Lock Nut
(Exhaust Manifold)
When installing new aftermarket headers, new hardware should be used. An even clamping force is required to keep the header tight against the head in order to seal the exhaust gasket properly. The studs on your truck may be 20 to 30 years old, and we can tell you from experience that it is cheaper and easier to replace studs then it is to remove broken ones.
OEM Toyota Part #: 90179-10175
NOTE: This Toyota Nut is a Mechanical Locking Nut M10 X 1.25 thread pitch. If you’re looking for the OEM stud for this nut, see Part #: 1045039.
Contact our Tech Support Line for further information at 928-575-2174.
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Note: Images are for illustration purposes only. Images may not represent the product listed. Please contact customer service with any questions or concerns: 1-928-505-2501.
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