Brand: 
GU7280/4 Mercedes / BMW U Joint 24 x 74.5 | 0.945 x 2.937 Staked / Crimped U Joint
$11.64
+50 in stock
Description
GU7280/4 universal joint, stacked series, 0.945″ cap diameter x ” cross width, sealed non-greaseable design.
Full Description
Selecting the correct universal joint requires matching three critical dimensions: series, cap diameter, and cross width. The GU7280/4 checks all three for stacked series driveshafts: 0.945" caps and N/A" overall width. This guide walks through the specifications and installation considerations for this joint.
Series and Cap Diameter Explained
The stacked series designation defines the torque capacity tier for this joint. At 0.945", the bearing cap diameter governs the contact area between cross trunnion and needle bearings -- a direct indicator of load capacity. Larger cap diameters handle greater torsional loads and are typically found on heavier trucks and industrial equipment. The GU7280/4 is sized for stacked series yokes and should not be substituted with a different cap diameter even if the overall cross width appears similar.
Full Specifications
| Spec | Value |
|---|---|
| SKU | GU7280/4 |
| Series | stacked |
| Mounting Style | STAKED |
| Bearing Cap Dia. | 0.945 in. |
| Cross Width | N/A in. |
| Lubrication | Non-Greaseable -- sealed bearing |
| Notes | Mostly for Mercedes & BMW APP |
Material and Heat Treatment
Universal joint crosses for driveshaft use are manufactured from case-hardened alloy steel. The hardened surface resists abrasion from needle bearings while the tough core absorbs shock loads. The GU7280/4 cross meets this standard, with a surface hardness that supports the full torque rating of the stacked series.
Step-by-Step Replacement
- Remove driveshaft: unplug from transmission slip yoke and companion flange
- Use a 2-jaw puller or press to extract old bearing cups from yoke ears
- Deburr and clean all four yoke bores
- Install GU7280/4 cross: start two opposing cups, then complete the remaining pair
- Press each cup to snap ring depth without damaging needle bearings
- Verify smooth articulation through at least 30 degrees in all planes
Stocking Information
The GU7280/4 is a catalog stocking item at Universal Driveshafts. Same-day dispatch is available for orders placed before the daily cutoff. We also carry the matching yokes, slip yokes, and flanges for complete stacked series driveshaft builds.
Additional information
| Series | stacked |
|---|---|
| Style | STAKED |
| Cap dia 1 | 0.945 |
| Width 2 | 2.933 |
| Brand | UDS |
| Notes | Mostly for Mercedes & BMW APP, Staked or crimped universal joints do not have snap rings |
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