Overview
The ZF 6009.085.104 is a critical OEM genuine component engineered specifically for the WG 110 series transmission. This precision-machined part functions as a key interface within the valve body or hydraulic control assembly, regulating fluid flow and pressure to ensure smooth gear engagement. The SKU 6009.085.104 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life. When installed alongside the 4651101013: TRANSMISSION HOUSING, it creates a sealed, high-pressure zone essential for proper clutch pack operation.
Symptoms of Failure
- Delayed or harsh shifting – A worn 6009.085.104 can cause erratic hydraulic pressure, leading to noticeable lag or jarring shifts, especially in the WG110 under load.
- Intermittent gear slipping – As the part degrades, internal leakage may occur, causing the transmission to momentarily lose drive in higher gears.
- Fluid contamination or debris – If the component fractures, small metal or polymer particles can circulate, accelerating wear on the 4651301032: HOUSING and adjacent valve bores.
- External oil seepage – A compromised seal surface on the 6009.085.104 often results in visible drips near the transmission pan or side cover.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 6009.085.104 |
| Material | Hardened steel with corrosion-resistant coating |
| Weight | 0.45 kg (1.0 lb) |
| Dimensions (L x W x H) | 85 mm x 40 mm x 25 mm |
| OEM Reference | ZF 6009.085.104 (Genuine) |
| Sealing Surface | Precision ground to 0.01 mm tolerance |
Compatibility
This part is primarily designed for the ZF WG 110 series. It is also compatible with the WG 120 and WG 150 series transmissions due to shared hydraulic architecture. For the WG 180 and WG 200 models, verify the valve body configuration, as the 6009.085.104 may require the 0634303928: O-RING for proper sealing. Always cross-reference with the 4651301033: HOUSING to ensure correct fitment in older units.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101013 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4651301032 | HOUSING | Secondary housing for valve body support |
| 0634303928 | O-RING | Seals fluid passages between housings |
| 4651301033 | HOUSING | Alternate housing variant for WG110 |
| 4651203002 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4651303005 | SCREEN SHEET | Fine mesh filter for valve body |
| 0636101032 | CAP SCREW | Fastens housing components |
| 0630361028 | SEALING CAP | Prevents fluid leaks from ports |
| 4475280060 | SCREW PLUG | Closes threaded hydraulic passages |
| 0634303312 | O-RING | Secondary seal for high-pressure circuits |
Frequently Asked Questions
Q: Can the 6009.085.104 be reused after a transmission rebuild?
No. ZF recommends replacing this OEM genuine part with a new unit during any major overhaul to ensure proper sealing and hydraulic integrity.
Q: What tools are needed to install the 6009.085.104?
Standard socket set and torque wrench. The part requires careful alignment with the 4651301032: HOUSING; a seal driver is advised to avoid damaging the O-ring groove.
Q: How does this part affect shift quality in the WG110?
It directly controls pressure modulation. A worn 6009.085.104 will cause soft shifts or clutch slip, while a new unit restores crisp, consistent engagement.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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