3-28-57-2 Weld Tube Yoke 1350 Ser’ , Fits: 2.750 x 0.083 , Butt Dia: 2.594 Inch CL To Weld: 2 Inch SOLID BUTT (Copy)

3-28-57-2 UDS 1350 Series Steel Weld Yoke — 2.750"×0.065" Tube, 2.625" Butt Dia, 2.000" CJ-to-Weld

The 3-28-57-2 is a UDS 1350 series steel tube weld yoke machined for 2.750-inch OD driveshaft tubing with a 0.065-inch wall thickness. The yoke becomes a permanent part of the driveshaft assembly once welded; the driveshaft tube butts against the 2.625-inch shoulder diameter and is MIG or TIG welded in place, establishing the rigid connection between the tube and the 1350 series yoke ears. The U-joint centerline-to-weld-face dimension is 2.000 inches, which determines the yoke's contribution to the total driveshaft collapsed length when calculating assembly geometry. Research identifies the Neapco N3-28-57-2 as the direct equivalent, with additional cross-references: 7834453, R3-28-1107, P7834453, and 74084453.

The tube specification of 2.750×0.065 describes two distinct dimensions that must both be correct before welding. The 2.750-inch OD is the outside diameter of the tube wall; this must match the bore preparation of the yoke's weld end, which is machined to receive 2.750-inch tube. A tube with a larger OD will not seat against the butt shoulder; a tube with a smaller OD will produce an off-center joint with a gap on one side that cannot be corrected with weld fill. The 0.065-inch wall thickness affects the depth of the weld bevel — thin-wall tubing (0.065-inch) requires a different heat input and bevel angle than heavier wall (0.083-inch or 0.120-inch) tube; verify wall thickness with calipers before cutting the weld prep. The butt diameter of 2.625 inches is the shoulder OD at the yoke weld end; the tube butts square against this shoulder, and the weld is laid in the groove between the tube end face and the yoke shoulder. The 1350 series yoke ears accept 1350 U-joints: 1.188-inch cap diameter on a 3.625-inch span. A 1310 cap at 1.062 inches will spin freely inside the 1350 bore and produce immediate joint failure; do not mix series at the U-joint bore.

Specifications

• Part Number: 3-28-57-2
• Brand: UDS
• Series: 1350
• Material: Steel
• Tube OD × Wall Thickness: 2.750" × 0.065"
• Butt Diameter: 2.625"
• Center U-Joint to Weld (CJ-to-Weld): 2.000"
• Cross-References: Neapco N3-28-57-2, 7834453, R3-28-1107, P7834453, 74084453

Fitment & Installation Notes

Before ordering the 3-28-57-2, confirm the driveshaft tube OD is 2.750 inches and wall thickness is 0.065 inches. Do not assume wall thickness from OD measurement alone — 2.750-inch OD tubing is available in multiple wall specs (0.065", 0.083", 0.120") and the yoke bore and weld prep are specific to the 0.065-inch wall. Measure wall thickness with a micrometer at the cut end of the tube, not at a bent or swaged section. After confirming tube dimensions, square-cut the tube end, deburr both the ID and OD edge, and clean the mating surface to bare metal before welding. An off-square cut produces a weld joint with variable gap, which concentrates stress at the narrow side and creates a balance problem after the assembly is spun.

The 1350 series places the 3-28-57-2 in the mid-range of the Spicer torque hierarchy, above the 1310 and 1330 but below the 1410 and 1480. The 1350 is the standard rating for 3/4-ton pickup trucks, full-size SUVs, and light commercial applications — it is the most common series used in custom driveshaft fabrication for these platforms. The Neapco N3-28-57-2 cross-reference (also listed as N3-28-57-2 at Drivetrain America for the 2.750×0.065 specification) and the additional cross-references 7834453 and R3-28-1107 confirm broad aftermarket availability for this combination. When using this yoke as part of a balance-quality shaft, ensure the weld joint is concentric — the yoke bore must run true to the tube centerline within 0.005 inches total indicated runout after welding, or the assembly will not balance to acceptable vibration limits. Use the 3-28-57-2 only with 1350 series U-joints to maintain series integrity.

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