3-2-1719 Spicer Flange Yoke 1480 series, 4x.472 Tapped Holes on 4.250 BC, 2.680 F pilot

3-2-1719 Spicer 1480 Series Flange Yoke — 4.250" Bolt Circle, 2.680" Male Pilot, 4 Tapped Holes

The 3-2-1719 is a Dana Spicer 1480 series flange yoke that bolts to a companion flange on the transmission output, transfer case, or differential pinion. Unlike a splined end yoke, the 3-2-1719 uses a bolt pattern connection: four tapped holes on a 4.250-inch bolt circle engage the companion flange bolts, and a 2.680-inch male pilot diameter registers the yoke concentrically in the flange bore. The CJ-to-flat dimension of 1.800 inches establishes the distance from the U-joint centerline to the flat mating face of the flange. Research data identifies the AAM F81Z4865DA as a cross-reference for this application, consistent with its use on Ford heavy-duty driveline configurations.

The 1480 series designation drives two critical fitment parameters. First, the yoke ears are machined to accept 1480 series U-joint caps: 1.375-inch cap diameter on a 4.188-inch overall span. A 1350 series U-joint cap measures 1.188 inches in diameter — it will not fill the 1480 bore correctly and will fail catastrophically under load. Second, the 1480 rating places this yoke in the heavy-duty light truck and medium-duty commercial spectrum, where peak torque demands exceed what a 1350 or 1410 yoke can reliably sustain. The four tapped mounting holes accept 0.410-inch diameter fasteners; verify the companion flange bolt diameter before torquing. The pilot diameter is listed as 2.680-inch male (M), meaning the 3-2-1719 carries a machined register that inserts into a 2.680-inch female bore on the companion flange — this register must seat fully to maintain yoke-to-flange concentricity. The swing diameter of 5.875 inches defines the rotation envelope of the yoke ears; confirm driveshaft tunnel clearance at full articulation before installation. The cross-reference to AAM F81Z4865DA confirms this part number's use in Ford-platform applications where the OEM supplied an AAM driveline component.

Specifications

• Part Number: 3-2-1719
• Brand: Dana Spicer
• Series: 1480
• Bolt Circle Diameter: 4.250"
• Bolt Holes: 4
• Bolt Hole Diameter: 0.410" (tapped)
• Pilot Diameter: 2.680" Male (M)
• CJ to Flat: 1.800"
• Swing Diameter: 5.875"
• Cross-Reference: AAM F81Z4865DA

Fitment & Installation Notes

Before ordering the 3-2-1719, verify the companion flange has a 4.250-inch bolt circle, four holes, and a 2.680-inch female pilot bore. Measure the pilot bore on the companion flange directly — do not rely on model-year lookup alone, as some applications were produced with multiple companion flange configurations across the same model run. The 0.410-inch tapped holes in the 3-2-1719 require matching bolt shank diameter; use grade-8 or equivalent fasteners and verify thread engagement depth is sufficient for the bolt length specified by the OEM torque procedure.

The 1480 series sits two steps above the 1350 in Spicer's torque hierarchy and one step above the 1410. Applications in the 1480 range include 3/4-ton and 1-ton pickup trucks, full-size vans, and medium commercial platforms where sustained high-torque operation requires the added cap diameter and bearing surface area of the 1480 trunnion. Substituting a 1350 or 1410 yoke to mate with a 1480 U-joint — or vice versa — is not possible without re-machining the yoke ears, as the bore diameters are series-specific. The cross-reference AAM F81Z4865DA confirms fitment alignment with Ford-platform applications; verify the 4.250-inch bolt circle and 2.680-inch pilot against the specific vehicle before finalizing the order. Use the 3-2-1719 only with 1480 series U-joints to maintain series integrity through the driveline.

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