Terra Firma Automotive supplies genuine Nissan transmission internals that restore crisp, positive engagement in your Z32 manual gearbox. This 5th gear sleeve coupling is the exact OEM sliding sleeve responsible for locking the overdrive (5th) gear to the main shaft when selected. Precision-machined with the correct spline count, engagement teeth profile, and surface treatment Nissan specified, it delivers the solid mechanical lock needed for smooth, confident shifts into fifth gear.
The 5th gear sleeve sees constant use during highway driving and is a common wear point, often leading to notchy or grinding shifts into overdrive, loose feel, or difficulty holding gear. This authentic replacement restores tight, positive engagement and reduces wear on the 5th gear baulk ring and hub. Its factory-correct dimensions ensure perfect compatibility with the matching synchro ring and gear assembly.
At Terra Firma Automotive we focus on these hard-to-find internal components that make a major difference in how a rebuilt transmission feels and lasts. Whether you are performing a full gearbox overhaul on your twin-turbo, refreshing the overdrive section on a naturally aspirated model, or completing a thorough transmission rebuild on your 1989–1996 Fairlady Z or 1990–1996 300ZX, this 5th gear sleeve coupling helps return the shifting experience to factory-fresh quality.
- Fits 32606 Location
- Genuine Nissan OEM 5th gear sleeve coupling (Part Number 32616-30P20)
- Direct fit for all Z32 manual transmissions (NA & TT)
- Precision splines and engagement teeth for solid locking
- Restores crisp, confident shifts into 5th gear
- Reduces grinding and wear on synchro ring and hub
- Essential during 5th gear service or full transmission rebuilds
- High-quality hardened construction for long service life
- USDM 300ZX (Z32): 1990–1996 (VG30DE & VG30DETT – NA or TT)
- JDM Fairlady Z (Z32): 1989–1996 (VG30DE & VG30DETT – NA or TT)
- Engine Compatibility: Fits all VG30DE and VG30DETT engines with manual transmission
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