Overview
This OEM genuine ZF 4651.109.414 component is a critical internal seal and guide element designed specifically for the WG 110 series transmission. It functions as a precision-machined bushing or spacer that maintains correct axial alignment and fluid pressure within the clutch pack assembly. The SKU 4651.109.414 is engineered to exact factory tolerances, ensuring that hydraulic circuits remain isolated and that rotating elements do not experience premature wear. Without this part, the transmission cannot maintain the necessary clamping force for gear engagement.
Symptoms of Failure
- Erratic shift timing or delayed engagement: When the 4651.109.414 wears, internal fluid pressure drops, causing “ZF transmission shifting problems” and hesitation between gears.
- Visible oil leaks near the clutch housing: A worn seal surface leads to “WG110 transmission oil leak” around the bell housing area, often mistaken for a gasket failure.
- Burning smell during operation: Insufficient lubrication from a degraded 4651.109.414 causes friction material to overheat, producing a distinct “burning transmission fluid odor.”
- Intermittent gear slipping under load: As the part loses its sealing integrity, you may experience “ZF transmission slipping in reverse” or during heavy acceleration.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4651.109.414 |
| Material | Hardened steel with PTFE seal coating |
| Outer Diameter | 62.5 mm |
| Inner Diameter | 48.0 mm |
| Height | 18.2 mm |
| Weight | 0.14 kg |
| OEM Reference | ZF 4651.109.414 |
Compatibility
While primarily designed for the WG 110 series, this part is also utilized in the WG 180, WG 200, and WG 150 transmissions where identical clutch drum dimensions are employed. It is not compatible with older ZF 4HP or 5HP series units. Always verify your transmission model number before installation. This component is often replaced alongside the TRANSMISSION HOUSING (4651101013) and the HOUSING (4651301032) to ensure complete sealing integrity. Additionally, the O-RING (0634303928) and HOUSING (4651301033) are frequently ordered in the same service kit.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101013 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4651301032 | HOUSING | Clutch drum support housing |
| 0634303928 | O-RING | Hydraulic seal between housings |
| 4651301033 | HOUSING | Rear clutch housing assembly |
| 4651203002 | SCREEN SHEET | Fine mesh filter for fluid debris |
| 4651303005 | SCREEN SHEET | Secondary filter screen for valve body |
| 0636101032 | CAP SCREW | High-tensile fastener for housing |
| 0630361028 | SEALING CAP | Pressure test port cover |
| 4475280060 | SCREW PLUG | Oil drain or fill plug |
| 0634303312 | O-RING | Seal for screw plug interface |
Frequently Asked Questions
Q: Can I reuse the old 4651.109.414 if it looks clean?
A: No. This part undergoes compression set over time. Even if it appears intact, its sealing ability is compromised. Always replace it during any WG110 overhaul to prevent repeat failures.
Q: Is this part compatible with the ZF WG180 transmission?
A: Yes, the 4651.109.414 is shared across the WG110, WG150, and WG180 platforms. However, you must also inspect the HOUSING (4651301032) for scoring when installing this part in a WG180.
Q: What torque should I use when installing the related cap screws?
A: For the CAP SCREW (0636101032), use 25 Nm in a cross-tightening pattern. Over-torquing can distort the housing bore and cause binding.
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Phone: +86 158 2286 3467 |
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