3503-166 – Slip Yoke – 1.375″ Splines Dia – 1350 Series – Center U Joint To End 6.810
$44.38
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Description
3503-166 Slip Yoke — 1350 series, 1.375 x 16 spline | 6.810″ CL-to-end. Genuine direct replacement. Verify spline count and CL-to-end length.
Full Description
The 3503-166 slip yoke engages the transmission output shaft and allows the driveshaft to change effective length as the suspension cycles. It's a spline-specific part for 1350 series applications — the spline count and shaft diameter both have to match your transmission tailshaft exactly. Wrong spline count means it won't engage; wrong series means the u-joint won't fit the ears.
3503-166 Slip Yoke — 1350 Series Spline & Length Specs
The 1350 series covers 3/4-ton trucks — F-250, Ram 2500, Dana 44/60 axles, performance 4x4. The 3503-166 slip yoke specs: 1.375 x 16 spline | 6.810" CL-to-end. The center-to-end dimension controls how much travel the driveshaft has as the suspension compresses and droop cycles. Too short on lifted vehicles means you'll hit the end of spline travel at full droop — and that means the driveshaft separates.
Verify spline count on your transmission output shaft before ordering the 3503-166 slip yoke. If the transmission was rebuilt or swapped, the tailshaft spline count may differ from the original application spec. Full spline engagement is non-negotiable — partial engagement under load damages the output shaft.
Key Features
- Series: 1350 — 3/4-ton trucks — F-250, Ram 2500, Dana 44/60 axles, performance 4x4
- Spline: 1.375 x 16 — transmission tailshaft match required
- CL-to-end: 6.810" — determines driveshaft travel range, critical on lifted vehicles
- Brand: UDS
Specifications
- SKU: 3503-166
- Brand: UDS
- Series: 1350
- Spline Dia: 1.375
- Spline Count: 16
- CL to End: 6.810"
Additional information
| Center u joint to end |
6.810 |
|---|---|
| Partn number |
3503-166 |
| Series |
1350 |
| Splines count |
16 |
| Splines dia |
1.375 |
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