Description
9951-71 universal joint cross, series, 1.102″ cap diameter — replacement u-joint for Amphicar Axle Joints applications.
Driveshaft U-Joint Cross -- 9951-71, Series
The 9951-71 is a stock-replacement universal joint cross for series driveshafts. Cap diameter is 1.102", overall width is 2.787", fitting the yoke bore dimensions used on series driveshaft propshaft assemblies. This cross is sealed (pre-lubricated, no grease fitting).
Technical Data
| Specification | Value |
|---|---|
| Part Number | 9951-71 |
| Series | |
| Cap Dia. | 1.102" |
| Width | 2.787" |
| Style | OSR |
| Greaseable | No |
| Brand | UDS |
| Notes | Amphicar Axle Joints |
Correct Series Identification
Before ordering, confirm your driveshaft uses series u-joints. Measure across the cap OD of the old joint -- series measures 1.102". Also check the snap-ring retention style: external snap rings seat in a groove in the yoke ear, while internal snap rings seat in a groove in the cap itself. This cross uses the standard retention design.
Maintenance Protocol
This is a sealed cross -- no periodic greasing is required. Inspect for play, roughness, and seal damage at every major service interval and replace proactively if wear is detected.
Driveline Angle Check
While the driveshaft is out, check the pinion angle and transmission output angle. Both should be within 1 degree of each other (canceling phasing) and neither should exceed 3 degrees for smooth operation. Adjust pinion angle with shims or adjustable control arms as needed before installing the new joint.
App note: Amphicar Axle Joints
New to U-joints? See our universal joint guide for styles, snap-ring types, and measuring tips.
| Style | OSR |
|---|---|
| Cap dia 1 | 1.102 |
| Width 1 | 2.787 |
| Lube | No |
| Brand | UDS |
| Notes | Amphicar Axle Joints |
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