GU4470 universal joint in the precise catalog size 42.12×104.5 mm, also searched as U447 and Precision 5871.5. The photographed greaseable kit includes one forged cross with four installed bearing cups and white seals, four external snap rings with eyelet holes and one separate 90-degree grease fitting. Important: U447 is reused by other catalog systems for different dimensions, so verify GU4470, cup diameter and overall span together.
GU4470 Universal Joint 42.12×104.5 mm | U447
Description
GU4470 Universal Joint 42.12×104.5 mm
GU4470 universal joint is a greaseable propeller-shaft cross kit in the precise 42.12×104.5 mm dimensional family. The nominal bearing cup diameter is 42.12 mm and the overall span across two opposite installed cups is 104.5 mm. The photographed configuration contains one forged cross with four bearing cups and white seals, four separate external snap rings with eyelet holes and one 90-degree elbow grease fitting.
GU4470, GU-4470 and GU 4470 are common writing variations of the GMB-style model. U447 is the main alternative code in catalogs that place this item beside GU4470, while Precision 5871.5 appears as another identification reference. Workshop descriptions may round the size to 42×104 mm or 42×105 mm, but the precise values should remain the primary purchasing data.
Product Features
- Forged cross body for automotive and commercial propeller-shaft service.
- Nominal 42.12 mm bearing cup diameter and 104.5 mm overall span.
- Four installed plain cylindrical bearing cups with visible white seal rings.
- Four external retaining rings, each with two eyelet holes for circlip pliers.
- Greaseable center-port design with a separate 90-degree elbow fitting.
- Search coverage for GU4470, U447, Precision 5871.5 and rounded 42×104 listings.
Installation quality directly affects the life of a GU4470 universal joint. Clean the yoke bores and snap-ring grooves before pressing the cups. Keep every cup square, support the opposite yoke ear and prevent needle rollers from falling under a trunnion. Install all four eyelet rings fully into their grooves, fit the elbow grease fitting where it clears the yoke and confirm smooth articulation without axial looseness or tight spots.
Technical Specifications
| Product type | Universal joint / propeller shaft cross bearing kit |
|---|---|
| Primary model | GU4470 |
| Alternative model | U447 |
| Additional catalog reference | Precision 5871.5 |
| Bearing cup diameter | 42.12 mm nominal |
| Overall span | 104.5 mm nominal |
| Rounded search sizes | 42×104 mm / 42×105 mm |
| Retention type | Four external snap rings with eyelet holes |
| Lubrication | Greaseable; separate 90-degree fitting |
| Brand | MR Driveline |
Cross References and Catalog Identity
Verified searches for the GU4470 universal joint include U447 and Precision 5871.5. Multiple universal-joint catalogs list GU4470 at 42.12 mm cup diameter and 104.5 mm overall span, with U447 in the corresponding reference column. These three identifiers and both precise dimensions should be checked together rather than treating any one short code as sufficient proof of fitment.
Important catalog conflict: U447 is not globally unique. A separate GKN catalog uses U447 for a 50×164 mm joint, which is not this product. Some sources also show a 42×104.5 mm SGWB 587.15 family; its punctuation and retention details should not be confused with the Precision 5871.5 reference without physical comparison. For this page, U447 always means the 42.12×104.5 mm item associated with GU4470.
Before approving interchange, compare cup outside diameter, full over-cup span, snap-ring groove position, ring thickness, installed width between rings, seal shape, lubrication-port location and yoke bore condition. Similar nominal dimensions do not correct a different groove position or retention system.
Photographed Supply Configuration
The photographed GU4470 universal joint kit is shown with one cross, four installed bearing cups, four white seal rings, four eyelet-style external snap rings and one loose 90-degree grease fitting. This exact component count distinguishes it from maintenance-free versions, open-ended C-ring kits and products using internal circlips or plate-retained cups.
Typical Applications
The GU4470 universal joint is commonly researched in automotive universal-joint and American-market replacement catalogs. Exact vehicle fitment still depends on propeller-shaft maker, yoke design, axle, gearbox and previous shaft repairs.
For a fast compatibility review, send MR Driveline the old model number, exact cup diameter, overall installed span, snap-ring groove-to-groove dimension, ring thickness and clear photographs of the yoke. If the removed part or package is marked U447 or 5871.5, include the brand name because the same short numbers can appear in unrelated numbering systems.
Why Choose MR Driveline
MR Driveline organizes every GU4470 universal joint inquiry around model family, measured dimensions, retention type and visible supply configuration. This prevents the common error of merging every U447 search into one product. We support distributors, workshops and shaft repairers with dimensional checking, sample confirmation, packaging choices and repeat-order control.
FAQ
Are GU4470 and U447 the same reference?
They are paired in catalogs for the 42.12×104.5 mm product shown here. Because U447 is reused elsewhere, confirm the GU4470 code and both dimensions before ordering.
Is the correct size 42×104 mm or 42.12×104.5 mm?
42×104 mm is the rounded label visible in many workshop listings. The stronger catalog specification is 42.12 mm cup diameter and 104.5 mm overall span.
Is GKN U447 an interchangeable number?
No automatic interchange should be assumed. A GKN catalog assigns U447 to a different 50×164 mm joint, so the brand and dimensions must be retained with the code.
What is included in the kit?
This GU4470 universal joint kit includes one cross with four installed cups and white seals, four eyelet snap rings and one separate 90-degree grease fitting.
What should be measured before ordering?
Measure cup outside diameter, overall span, groove position and ring thickness. Also confirm that the yoke allows clearance for the 90-degree grease fitting.
Additional information
| Brand | MR Driveline |
|---|---|
| Bearing Cup Diameter | 42.12 mm |
| Overall Span | 104.5 mm |
| Retention Type | External snap rings with eyelet holes |
| Lubrication | Greaseable, separate 90-degree fitting |
