Dana Spicer 6.5-4-08443-1X 1810 Series Differential End Yoke
The Dana Spicer 6.5-4-08443-1X End Yoke is a genuine heavy-duty 1810 Series pinion shaft / differential end yoke assembly designed to connect the vehicle’s driveshaft to the differential pinion input. Built from high-strength steel and manufactured to Spicer OE specifications, this yoke is engineered to handle the torque, vibration, and continuous-duty demands found in Class 8 trucks, vocational equipment, and other heavy-duty drivetrain applications.
The 6.5-4-08443-1X uses a 49-spline involute bore with a 2.544-inch major spline diameter, providing precise engagement with the mating pinion shaft. Dana identifies the yoke as an HR-style 1810 Series yoke with a splined-hole design and an included slinger/plug.
Key Specifications
- Manufacturer: Dana / Spicer
- Part Number: 6.5-4-08443-1X
- Product Type: Differential / Pinion Shaft End Yoke Assembly
- Series: 1810
- Yoke Style: HR
- Material: Steel
- Connection Type: Splined hole
- Spline Type: Involute
- Spline Count: 49
- Major Spline Diameter: 2.544 in.
- Hub Diameter (R): 3.820 in.
- Centerline to End of Hub (S): 5.740 in.
- Length Through Hole (Q): 2.692 in.
- C-Bore Depth: 0.240 in.
- Includes Slinger / Plug: Yes
- Assembly: Yes
- Approximate Weight: 17.39 lb
- UPC: 00023913259952
- VMRS Code: 022-003-072
- Country of Origin: Mexico
Heavy-Duty Differential Connection
Installed on the differential pinion shaft, the 6.5-4-08443-1X provides the mechanical interface between the differential and the driveshaft U-joint. As the driveshaft rotates, the end yoke transfers torque into the pinion gear, which then drives the ring gear and differential assembly.
Because the yoke operates under high torsional loads, correct spline fit and driveline alignment are critical. The precision-machined 49-spline bore helps provide secure engagement with the pinion shaft while the heavy-duty 1810 Series construction is designed for demanding commercial drivetrain service.
Cross-References
Known cross-reference and supersession numbers for the Dana Spicer 6.5-4-08443-1X include:
- Dana / Spicer: 5008443
- Dana / Spicer: 6.5-4-5101-1
- Mack: 181MU51P50
- Mack: 20860583
- Mack: 2104-654084431X
- McNeilus: 1322933
- McNeilus: 1510402
- Navistar: DS654084431X
- Volvo: 2104-654084431X
- Daimler Truck North America: SP 6.5 4 08443 1X
When replacing an end yoke, verify the 1810 driveline series, 49-spline count, 2.544-inch major spline diameter, hub dimensions, and differential application before installation.
The Dana Spicer 6.5-4-08443-1X End Yoke Assembly is an OE-quality solution for compatible heavy-duty differential and driveline applications requiring a durable 1810 Series, 49-spline pinion shaft yoke.
