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Spicer · Drivetrain
6.5-4-1891-1
In stock · ships from Knoxville
The 6.5-4-1891-1 is a heavy-duty 1810 series end yoke, also known as a coupling shaft or jack shaft yoke.
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Verified fitment for 2 applications
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This yoke fits any output shaft that matches the exact spline dimensions (2.350" major diameter, 16 splines). It is not specific to a single vehicle make/model; always measure your shaft's spline count and diameter before ordering.
Part data verified against 5 catalog sources
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It mounts on an output shaft with a 2.350-inch major diameter and 16 splines, and is retained by a strap-style universal joint. This yoke is used to connect a driveshaft to a fixed shaft on Class 7-8 commercial trucks and industrial equipment. You typically replace it when the internal splines are worn or damaged, which can cause driveline slop, clunking under acceleration, or vibration. Always count your shaft’s splines and verify the dimensions before ordering, because axle swaps or rebuilds may have changed the original specification.
Part Number: 6.5-4-1891-1
END YOKE
Category: Driveline
Unit: ea
Dealer: Post Onsite
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