Terra Firma Automotive supplies genuine Nissan transmission synchro rings engineered to restore precise gear engagement in your Z32 manual gearbox. This early-style 3rd gear baulk synchro ring is the exact OEM friction cone that matches shaft speeds when shifting into or out of third gear. Produced to Nissan’s original specifications with the correct cone angle and high-friction surface treatment, it delivers the strong yet progressive synchronization needed for clean, effortless shifts.
Third gear synchros in the Z32 experience significant stress from frequent upshifts and downshifts. When the original ring wears, drivers typically notice grinding, hesitation, or a notchy feel that spoils the driving experience. This authentic early-version replacement restores the factory shift quality, reduces wear on the gear teeth and synchronizer hub, and brings back the smooth, mechanical action these transmissions are known for.
At Terra Firma Automotive we carry these specific internal transmission components because they make a substantial difference during a proper rebuild or refresh. Whether you’re overhauling the gearbox on your twin-turbo, correcting shifting issues on a naturally aspirated model, or performing a complete synchro service on your 1989–1996 Fairlady Z or 1990–1996 300ZX, this 3rd gear baulk ring is a key piece for returning the transmission to its original crisp performance.
- Fits 32604+D Location
- Genuine Nissan OEM early 3rd gear baulk synchro ring (Part Number 32604-30P21)
- Direct fit for all Z32 manual transmissions
- Factory friction material and geometry for optimal synchronization
- Eliminates grinding and hesitation when selecting 3rd gear
- Critical wear item recommended during synchro or transmission rebuilds
- Helps extend life of 3rd gear and related components
- Sold individually (best replaced as a set with other baulk rings)
- 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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