Terra Firma Automotive supplies genuine Nissan differential adjustment shims critical for precise R200 setup on twin-turbo Z32s. This 2.71 mm pinion adjust washer is the exact OEM selective spacer used to control pinion gear depth relative to the ring gear. Precision-ground to Nissan’s exact thickness specification, it plays a vital role in achieving the ideal gear contact pattern, backlash, and preload required for quiet operation and maximum durability under the high torque demands of the VG30DETT.
Correct pinion depth is one of the most important factors when rebuilding a twin-turbo differential. The wrong thickness can result in gear whine, humming under load, or accelerated wear of the ring and pinion set. This authentic 2.71 mm washer provides one of the thinner options in Nissan’s selective range, giving experienced builders the ability to fine-tune the setup for optimal performance and longevity.
At Terra Firma Automotive we stock the complete selection of these pinion depth shims because they are essential for a professional, long-lasting differential rebuild. Whether you are overhauling a high-horsepower twin-turbo rear end, replacing bearings and seals, or performing a full differential restoration on your 1989–1996 Fairlady Z or 1990–1996 300ZX, this 2.71 mm pinion adjust washer helps achieve factory-correct gear geometry and smooth, quiet power delivery.
- Genuine Nissan OEM pinion depth adjustment washer (Part Number 38154-40P06)
- Precise thickness: 2.71 mm
- Selective fit for VG30DETT Twin Turbo R200 differential
- Critical for achieving proper gear contact pattern and backlash
- Helps eliminate whine and extend ring & pinion life
- Essential during differential rebuilds or bearing service
- Sold individually (measure existing setup to select correct thickness)
- USDM 300ZX (Z32): 1990–1996 (VG30DETT – Twin Turbo only)
- JDM Fairlady Z (Z32): 1989–1996 (VG30DETT – Twin Turbo only)
- Engine Compatibility: Fits VG30DETT engines (Twin-Turbo only)
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