Overview
The ZF 4475.280.076 is a critical OEM genuine component engineered specifically for the WG 110, WG 160, and WG 210 series transmissions. This precision-machined part functions as a hydraulic control element within the valve body assembly, regulating fluid pressure to ensure smooth clutch engagement and consistent gear shifts. As a direct replacement for the original factory component, the SKU 4475.280.076 restores the transmission’s shift quality and prevents erratic behavior caused by internal wear. It works in conjunction with the TRANSMISSION HOUSING (4651101013) to maintain proper alignment and sealing within the main casing.
Symptoms of Failure
- Delayed or harsh shifting: When the 4475.280.076 wears, hydraulic pressure drops, causing noticeable hesitation or jarring engagement between gears.
- Intermittent gear slipping: A failing part allows pressure loss under load, leading to momentary loss of drive power, especially during uphill climbs.
- Fluid contamination: Internal debris from a degraded 4475.280.076 can bypass the HOUSING (4651301032), resulting in metallic particles in the transmission pan.
- Erratic neutral-to-drive engagement: A worn component causes inconsistent pressure buildup, making the transmission lurch or fail to engage immediately.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4475.280.076 |
| Material | Hardened alloy steel with anti-corrosion coating |
| Weight | 0.45 kg (1.0 lb) |
| Dimensions | 85 mm x 40 mm x 25 mm |
| OEM Reference | ZF 4475.280.076 (Genuine) |
| Sealing Surface | Precision ground to 0.01 mm tolerance |
Compatibility
This OEM genuine part is designed for ZF WG-series transmissions, including the WG 110, WG 160, and WG 210 models. It also fits the WG 180 and WG 200 variants when used in conjunction with the HOUSING (4651301033). Always verify your transmission’s serial number against the ZF parts catalog. The O-RING (0634303928) must be replaced simultaneously to prevent fluid bypass around the valve body.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101013 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4651301032 | HOUSING | Intermediate support for valve body |
| 0634303928 | O-RING | Seals hydraulic passages |
| 4651301033 | HOUSING | Rear housing for clutch pack |
| 4651203002 | SCREEN SHEET | Filters debris from oil flow |
| 4651303005 | SCREEN SHEET | Secondary filtration element |
| 0636101032 | CAP SCREW | Fastens valve body to housing |
| 0630361028 | SEALING CAP | Prevents fluid leaks from ports |
| 4475280060 | SCREW PLUG | Closes hydraulic test points |
| 0634303312 | O-RING | Seals screw plug interface |
Frequently Asked Questions
Q: Can I install the 4475.280.076 without replacing the O-rings?
A: No. We strongly recommend replacing the O-RING (0634303928) and O-RING (0634303312) simultaneously to prevent future leaks and ensure proper hydraulic sealing.
Q: How do I confirm this part fits my WG 210 transmission?
A: Check the transmission model plate on the housing. The 4475.280.076 is compatible with all WG 110, WG 160, and WG 210 variants, but verify the serial number against the ZF catalog for absolute certainty.
Q: What is the typical lifespan of this component?
A: Under normal operating conditions, the 4475.280.076 lasts 150,000–200,000 miles. Premature failure often results from contaminated fluid or neglected filter changes.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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