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Spicer · Drivetrain
6-4-6021X
In stock · ships from Knoxville
This is a 1710 series full-round end yoke assembly, designed to mount on the splined output shaft of a transmission or differential and connect to a universal joint in a heavy-duty truck driveline.
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Universal fit
Fits heavy-duty trucks with a 1710 series driveline requiring a 2.024" 39-spline full round end yoke. Common interchanges include Meritor 17N4-6021/17N46021, Navistar 586533C91, Freightliner SP646021X, and S&S S-B426. Always verify spline count, diameter, and U-joint style before ordering.
Part data verified against 4 catalog sources
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Its splined bore (39 splines, 2.024" major diameter) slides onto the shaft and is secured by a bolt plate or retaining hardware. It is typically replaced when the splines wear out, the yoke ears crack, or during a driveline rebuild to ensure proper U-joint alignment and torque transfer.
Part Number: 6-4-6021X
END YOKE ASSY
Category: Driveline
Unit: ea
Dealer: Post Onsite
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