5th Gear Kit | Nissan FS5W71 (2WD)
Description
Helical 5th-gear pair for Nissan FS5W71 2WD manual transmissions. The set includes the mating mainshaft and countershaft gears (21/39 teeth) designed to interface with the OE synchronizer for quiet operation and high load capacity. Manufactured from case-carburized alloy steel and precision ground, these gears deliver excellent wear resistance, tooth strength, and consistent engagement—ideal for rebuilds or quality replacement.
Specification
Tooth Count: SPEED GEAR30/21 GEAR39/20
Material : High-Strength Alloy Steel
Heat Treatment : Surface Hardened or Carburized
Manufacturing : CNC Precision Machined
Surface Hardness : HRC 50–58
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Model:NIS-5C(A-201) 、VD55N55