The 3873573 World American differential spider is an inter-axle power divider spider built for T150-170-185 series applications. It interchanges directly with GM-3873573, making it a straightforward replacement option for shops already running that reference number. This spider is a core component of the power divider assembly, positioned inside the differential case to support proper torque distribution across tandem drive axles.
Features
Fits T150-170-185 series inter-axle power divider differentials
World American part number 3873573
Direct interchange with GM-3873573
World American differential component
