Stemco 383-8139 Wheel Seal – High Performance Hub Seal for Heavy-Duty Applications

The Stemco 383‑8139 is a complete Voyager™ wheel seal kit—featuring a hub-inserted, unitized design with bonded rubber sealing on both OD and ID—for heavy-duty front axle assemblies. Built to exceed OEM standards, it delivers superior protection against contamination, ensures excellent durability, and provides a tight, maintenance-reducing seal.

🔧 Key Features

• Comprehensive Kit includes the wheel seal and the 310‑1132 spindle donut (shoulder bushing)

• Bonded rubber OD/ID enables easy piloted installation and reliable seal

• Four-zone labyrinth seal design for maximum contaminant exclusion

• Unitized, rugged steel construction resists damage during install

• 📏 Technical Specifications

• Seal Bore (Inner Diameter): 4.000 in (shaft)

• Seal OD (Hub Bore): ~5.125 

• Seal Width: ~0.960

• Included Axle Ring (310‑1132): ID 2.625 in, OD 4.000 in, Width 0.750 

🔄 Cross-Reference & Interchangeable Part Numbers

Compatible with multiple equivalent seals from top brands:

• National: 370033A

• Boss Seals: B370033

• SKF / Chicago Rawhide: 39977, 39988

• Mechanex / Barrier: HS39977

• Triseal: 65294W

• Mack OEM: 32QJ248, 32QJ262, 88AX110, 88AX305, 891016

• Volvo: 8510 3343 (cross for Volvo OEs 1093082, V1093082, 892487, 3948302)