1204-261U – End Yoke – 1251 Series – 1.115″ Splines Dia – 1.445″ Hub Dia

Technical Overview: End Yoke 1204-261U for 1251 Series Applications

An end yoke terminates the driveshaft at the transmission or transfer case output shaft, converting spline motion to u-joint rotation. The 1204-261U is a 1251 series end yoke designed for a 1.115-inch spline diameter with 24/26 splines and a 1.445-inch hub diameter. This is a direct-application part -- dimensioned for a specific combination of series rating and key dimension, with no need for secondary machining in standard installations.

Part Dimensions

Why Series Matching Is Non-Negotiable

Series 1251 sets the cross cap diameter, load rating, and operating angle specification for every component in that driveshaft section. Substituting a end yoke from a different series introduces dimensional mismatches at the u-joint ears that prevent proper cap seating -- leading to rapid wear, seal failure, and potential separation. The 1204-261U was designed for 1251 series, so the geometry matches exactly.

Before You Install

• Confirm spline diameter of 1.115 with 24/26 splines is correct for your vehicle
• Check output shaft or spline for wear, scoring, or fretting before reinstalling
• Pack u-joint cross caps with chassis grease if your application has a grease fitting
• Torque retaining hardware to spec -- over-tightening snap ring grooves causes yoke cracking
• Rotate by hand before vehicle movement to check for binding or clunking

Note: USED ON 2 PCS SHAFT FOR SUBARU TO REPLACE THE CENTER CVJ SECTION

The 1204-261U is a catalog item at Universal Driveshafts -- available for fast dispatch. Contact our technical team if you need help confirming fitment.