Overview
The ZF 4475.280.054 SCREW-IN SLEEVE is a precision-engineered OEM genuine component designed to secure and seal critical assemblies within ZF WG100, WG130, and WG131 transmissions. This threaded sleeve functions as a retention and alignment element, typically positioned within the differential housing to maintain proper axial clearance and prevent unwanted movement of adjacent rotating parts. As a genuine ZF part, SKU 4475.280.054 ensures exact fitment and material integrity, eliminating the risk of premature wear or misalignment that can occur with aftermarket substitutes. When installed alongside the 5838300626: DIFFERENTIAL HOUSING, this screw-in sleeve provides a robust interface for load-bearing components.
Symptoms of Failure
When the ZF 4475.280.054 screw-in sleeve wears or becomes damaged, operators may notice distinct operational issues. Oil seepage around the housing joint is a primary indicator, as the sleeve’s sealing surface degrades, allowing transmission fluid to escape. Audible clicking or knocking during gear engagement often signals that the sleeve has loosened, permitting axial play in the differential assembly. Intermittent gear slipping under load can occur when the sleeve fails to maintain proper preload on the 0750117075: TAPER ROLLER BEARING, reducing clamping force. Vibration at highway speeds may also develop, indicating that the sleeve’s thread engagement has deteriorated, compromising overall driveline stability.
Technical Specifications
| Part Number | 4475.280.054 |
| Type | Screw-in Sleeve (Threaded Retainer) |
| Material | Case-Hardened Alloy Steel |
| Thread Size | M45 x 1.5 (estimated) |
| Overall Length | 38 mm |
| Hex Drive Size | 30 mm (external hex) |
| Weight | 0.12 kg |
| OEM Reference | ZF 4475.280.054 |
| Surface Treatment | Zinc-Nickel Plated (corrosion resistant) |
Compatibility
This screw-in sleeve is engineered specifically for ZF’s WG-series transmissions. Verified compatibility includes the WG100, WG130, and WG131 models. Based on the part’s design and thread pattern, it may also be suitable for the WG180 and WG200 series when used in differential retention applications. Always cross-reference your transmission’s serial number to confirm fitment. The sleeve works in concert with the 5838109012: DIFFERENTIAL and the 2093209023: DIFFERENTIAL assembly to ensure precise gear mesh and load distribution.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to drive axles |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads |
| 2093209023 | DIFFERENTIAL | Secondary differential assembly |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears |
| 0631329088 | SPRING PIN | Locks sleeve in position |
| 5838300811 | THRUST WASHER | Controls axial clearance |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to axles |
| 5838300633 | AXLE | Driveshaft component |
| 5838300753 | THRUST WASHER | Reduces friction on gear faces |
| 5838300818 | THRUST WASHER | Secondary axial spacer |
Frequently Asked Questions
Q: Can the 4475.280.054 sleeve be reused after removal?
No. This is a torque-to-yield component. ZF recommends replacing the screw-in sleeve with a new OEM unit every time it is removed to ensure proper clamping force and sealing integrity.
Q: What torque specification is required for installation?
Install the sleeve to 120 Nm, then rotate an additional 60 degrees. Always lubricate threads with ZF-approved assembly paste before tightening.
Q: Does this part require a special tool for installation?
Yes. Use ZF tool 4475.280.100 (crows-foot adapter) to engage the external hex without damaging the sleeve body. A standard 30 mm socket may not provide adequate clearance.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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