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Spicer · Drivetrain
170-4-221-1X
In stock · ships from Knoxville
This is a Spicer SPL170 series end yoke assembly designed for heavy-duty drivelines.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It features a splined bore with 39 involute splines (2.024" major diameter) that slides onto a transmission output shaft or differential pinion. The yoke retains the universal joint using half‑round straps, and it’s typically replaced when the splines wear or the yoke ears become damaged.
Part Number: 170-4-221-1X
END YOKE ASSY 170-4-221-1X
Category: Driveline
Unit: ea
Dealer: Post Onsite
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