OEM Exhaust Manifold Mechanical Lock Nut

OEM Exhaust Manifold Mechanical Lock Nut | M10 x 1.25

Whether you are bolting up a brand-new set of performance headers or performing a top-end engine overhaul, using fresh hardware is critical to achieving a permanent, leak-free seal. This genuine Toyota mechanical locking nut is engineered to withstand extreme under-hood heaty cycles without backing off, maintaining the even clamping force required to protect your exhaust gaskets.

Reusing warped, corroded, or cross-threaded nuts on old studs is a leading cause of broken hardware and exhausting manifold leaks. Take it from our team's decades of experience: refreshing your locking fasteners during disassembly ensures a trouble-free installation and protects your engine's performance.

Key Features & Specifications

• Mechanical Locking Design: Distorted-thread mechanical lock profile ensures the nut stays torqued down tight under severe heat and vibration-no nylon components to melt away.
• Genuine OEM Quality: Premium Toyota factory replacement hardware ensures perfect thread pitch engagement and superior metallurgical strength.
• Dimensions: M10 x 1.25 Thread Pitch
• Pricing: Sold individually.

Reference Cross-Component Numbers

-Installation Note: For a complete, bulletproof manifold refresh, we highly recommend replacing your exhaust studs at the same time. If you need matching factory-spec metric studs to complete your project, please see Part number: 1045039.