Description
PAI: GGB-6723
Part Type: Differential / transmission pinion gear
Category: Driveline → Transmission / Differential
Application: Mack manual transmissions (commonly T2090, T2130, T2180)
Function: Transfers torque inside the transmission/differential gear set
Key Specs
Material: Alloy steel
Outer teeth: ~33 teeth
Inner teeth/splines: ~16 inner teeth (varies
Heavy‑duty, heat‑treated gear for durability
Cross References
Mack OE: 764KB3264A, 25102004
Also seen as: 6723, GGB6723
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