2-28-2777 Spicer

The 2-28-2777 is a Spicer-branded 1330-series weld yoke in the compact 2.000"x0.120" tube format. The 1330 series uses a 1.062" cap diameter U-joint -- the same cap OD as the 1310, but with a slightly different journal length and bearing cup profile. The series step between 1310 and 1330 provides a modest torque capacity increase that matters in applications where the 1310 is borderline adequate. Confirm your existing yoke is 1310 or 1330 before ordering the replacement joint -- cap OD alone does not identify the series.

• 1330 series: 1.062" cap OD (same as 1310); distinguished by journal length and bearing cup depth
• 2.000" x 0.120" tube -- same spec as the 1350-series 3-28-777 and 3526-201; series is determined by the joint, not the tube
• 1.766" butt diameter -- standard for 2.000"x0.120" tube across all series at this wall
• 2.125" CL-to-weld -- same as 3526-201 (1350 series at this tube size); series identification must come from the joint spec
• Spicer-branded; verify 1330 joint cross-reference (Spicer 5-1310X or 5-3250X) before purchasing the complement U-joint

A common workshop error: technicians working on compact car and light-truck secondary shafts often order 1310-series replacement joints based on the 1.062" cap OD. If the original driveshaft was 1330-series, the 1310 joint will fit the bore but will sit short of full seating depth due to the shorter cup profile -- producing a loose cap that fails within days of service. Always verify the series from the original yoke or from the vehicle's OEM service documentation, not from cap OD alone.