The Eaton differential pinion shim, part number 401HS102-1 or 401HS1021, is a precision-ground shim used for setting pinion bearing preload and gear mesh in Eaton differentials. It measures 4.094 inches in diameter with a thickness range of 0.0025 to 0.0035 inches, making it a .003-class shim for fine tolerance adjustment during differential assembly or rebuild. This part is also cross-referenced under Spicer number SP401HS1021 and ETN401HS1021, among other equivalent numbers. Sold individually by Pro Gear and Transmission. Call us to confirm the correct shim selection for your specific differential assembly.
Features
Differential pinion shim for Eaton axle and differential assemblies
4.094 in. diameter
Thickness range: 0.0025-0.0035 in. (.003 class)
Used for pinion bearing preload and gear mesh adjustment
Cross-references: SP401HS1021, ETN401HS1021, 401HS1021
Sold as individual shim (each)
Tech Specs
- Diameter 4.094
- Thickness 0.0025-0.0035
