Dana Spicer 6.5-4-3591-1 End Yoke – 1810 Series Differential Drive Shaft Yoke
The Dana Spicer 6.5-4-3591-1 End Yoke is a genuine OEM-quality 1810 Series differential end yoke engineered for heavy-duty commercial truck drivelines. Designed to connect the driveshaft to the differential pinion or carrier shaft, this precision-machined half-round yoke provides reliable torque transfer while accommodating driveline articulation during suspension travel.
Manufactured from high-strength forged steel and heat-treated to Dana Spicer’s stringent specifications, the 6.5-4-3591-1 delivers exceptional durability in demanding on-highway and vocational applications. Its precision involute splines ensure an accurate fit on compatible shafts, while the robust half-round yoke design minimizes driveline vibration and maximizes service life. Genuine Spicer end yokes are manufactured using OE engineering standards to maintain proper driveline geometry, balance, and universal joint retention.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Dana Spicer |
| Part Number | 6.5-4-3591-1 |
| Product Type | Differential / Drive Shaft End Yoke |
| Joint Series | 1810 |
| Yoke Style | HR (Half Round) |
| Material | Forged Steel |
| Spline Type | Involute |
| Spline Count | 46 |
| Major Spline Diameter | 2.390 in. |
| Hub Diameter (R) | 2.875 in. |
| Length Through Bore (Q) | 2.750 in. |
| Centerline to End (S) | 5.500 in. |
| Outside Yoke Dimension (E) | 7.643 in. |
| Bearing Cap Diameter (D) | 1.938 in. |
| Maximum Joint Angle | 30° |
| Type | Splined Hole |
| Includes Slinger/Plug | No |
| VMRS Code | 022-003-072 |
Cross References:
- Dana Spicer 6.5-4-3591-1, 6.5-4-3591-1SB, 2104-65435911, 181MU51P41, SP6.5435911
- Freightliner E8HZ-4865-A
- Ford E8HZ-4865-A
- International 1660417C1, 65435911, D65435911, E65435911, SB65435911
- Neapco N6.5-4-3591-1
