This lock plate is a stamped metal retainer that prevents nuts or bolts from loosening due to vibration and heat cycling in the exhaust/turbocharger assembly. It typically sits between the fastener head and mounting surface or engages a stud to “lock” the hardware in place once torqued. Proper lock plates are essential for maintaining exhaust integrity, preventing leaks, and ensuring turbocharger alignment. As a direct OEM replacement, it matches Nissan factory specifications and fitment for Z32 twin‑turbo applications during turbo or exhaust service.
- Fits 14440EA/14440EB Locations
- USDM 300ZX (Z32): 1990–1996 (twin‑turbo models only)
- JDM Fairlady Z (Z32): 1989–1996 (twin‑turbo models only)
- Fits VG30DETT engines (TT only)
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