Spicer 127588 D404 Differential Pinion Shaft Locknut

Product Overview

Genuine Spicer 127588 differential pinion shaft locknut for supported Dana/Spicer D404-series axle carrier applications.

Technical Specifications

• Manufacturer: Dana Spicer
• Part number / SKU: 127588
• Product type: Differential pinion shaft locknut
• Thread: M39 x 1.5
• Wrench flats: 55 mm
• Series: D404
• Country of origin: USA

Application and Service Notes

Confirm the axle tag, carrier model, bill of material, pinion shaft thread, yoke or flange, and original nut number before ordering. Follow the applicable Spicer axle service manual for pinion-bearing preload, nut replacement, tightening procedure, and torque. Do not reuse a self-locking or deformed locknut unless the OEM procedure expressly permits it.

Please confirm part number 127588, M39 x 1.5 thread, D404 carrier application, and axle bill of material before ordering.

Technical References and OEM Documentation

• Dana Aftermarket — Spicer 127588 Official Product Record