250-4-21-1 – End Yoke – SPL250 Series – 2.390″ Splines Dia – 3.344″ Hub Dia
$237.74
1 in stock
Description
250-4-21-1 — SPL250 Series end yoke with 2.390-inch spline bore, 3.344-inch hub, and BS snap ring retention. Drop-in replacement for SPL250 Series output shafts.
Full Description
The 250-4-21-1 end yoke from UDS is defined by its precise dimensional stack: 2.390-inch spline diameter, 3.344-inch hub, and a center-U-joint-to-end measurement of 5.750". These numbers must match your output shaft exactly -- a fraction of an inch off means the yoke will not fit or will fail prematurely.
Full Specification Breakdown
Selecting this yoke requires cross-checking every dimension against your application. The specifications below represent the actual machined dimensions, not nominal values. Measure your existing yoke or output shaft before ordering.
| Specification | Value |
|---|---|
| Series | SPL250 Series |
| Spline Diameter | 2.390" |
| Spline Count | 46 |
| Hub Diameter | 3.344" |
| Center U-Joint to End | 5.750" |
| Through Hole Diameter | 2.750" |
| Snap Ring Style | BS |
| Brand | UDS |
Snap Ring and Retention System
This yoke uses a BS design, which dictates the U-joint cap retention method. SPL250 Series applications overwhelmingly use this style due to its serviceability and load rating. When replacing a worn yoke, the snap ring style must be preserved -- mixing OSR and ISR yokes with mismatched U-joints leads to cap ejection under torque.
- Retention style: BS
- Through bore ID: 2.750" -- critical for shaft clearance
- Hub OD: 3.344" -- registers against companion flange or seal bore
- Application notes: SPL250 Series standard fitment
Why Dimensional Accuracy Matters
In driveshaft engineering, yoke geometry directly controls phasing, balance, and operating angles. A yoke with oversized spline bores will develop rotational slop that amplifies vibration at highway speed. Undersized bores damage output shaft splines during installation. The 250-4-21-1 is manufactured to match the SPL250 Series standard, which is also the OEM specification for the vehicles in this application class.
For high-torque applications -- diesel pickups, off-road builds, and towing rigs -- always upgrade to a forged yoke in the appropriate series rather than reusing worn stock components.
Part 250-4-21-1 is a UDS product. Universal Driveshafts stocks a complete range of SPL250 Series end yokes, U-joints, and driveshaft components. Contact our technical team for fitment assistance.
Additional information
| Cj to end | 5.750″ |
|---|---|
| Hub dia | 3.344 |
| Partn number | 250-4-21-1 |
| Series | SPL250 |
| Splines count | 46 |
| Splines dia | 2.390″ |
| Style | BS |
| Through hole | 2.750″ |
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| | Cj to end 2.50 Hub dia 2.25 Partn number 10-4-143 Bore dia 1.125 Bore type round Keyway GAP - 0.25 Brand UDS Splines count N/A Style ISR Series 1000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Bore type round Cj to end 2.50 Hub dia 1.62 Keyway GAP - 0.25 Series 1000 Through hole 1.20 Bore dia 938 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Cj to end 2.900" Hub dia 1.342 Notes USED ON 2 PCS SHAFT FOR SUBARU TO REPLACE THE CENTER CV SECTION Partn number 1204-241U Series 1251 Splines count 22/24 Splines dia 995 Style SR Through hole 1.300" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Cj to end 3.312 Hub dia 1.445 Notes USED ON 2 PCS SHAFT FOR SUBARU TO REPLACE THE CENTER CVJ SECTION Partn number 1204-261U Series 1251 Splines count 24/26 Splines dia 1.115 Style SR Through hole 1.300" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Cj to end 6.200" Hub dia 3.819 Partn number 131446KS Series SPL250 Splines count 49 Splines dia 2.544 Style BS Through hole 2.672 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Cj to end 2.750" Hub dia 1.420" Notes FITS STUB: 1453-232 OR 3053-233 Partn number 1404-22 Series 1100 Splines count 22/23 Splines dia 0.990" Style SR Through hole 1.360" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Cj to end 3.250" Hub dia 1.420" Notes FITS STUB: 1453-232 OR 3053-233 Partn number 1404-231 Series 1100 Splines count 22/23 Splines dia 0.990" Style SR Through hole 1.800" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Cj to end 3.265 Hub dia 1.416 Notes USED ON MERKUR SHAFTS Partn number 1404-261 Series 1100 Splines count 26 Splines dia 1.129 Style SR Through hole 1.824 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Cj to end 5.590" Hub dia 2.879 Notes COUPLING SHAFT YOKE Partn number 170-4-1271-1 Series SPL170 Splines count 46 Splines dia 2.390" Style BS Through hole 2.750" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
