Overview
This genuine OEM ZF 4181.298.023 密封件修理包 is a critical service component designed to restore hydraulic integrity within heavy-duty construction machinery transmissions. Specifically engineered for ZF power shift gearboxes, this seal repair kit replaces all degraded elastomeric seals, gaskets, and O-rings that prevent cross-contamination between oil circuits and external leakage. The SKU 4181.298.023 corresponds to a factory-sourced assembly that directly interfaces with the clutch housing and valve body sections, ensuring precise sealing under high-pressure operating conditions. Without this kit, internal fluid migration can lead to pressure loss and erratic shifting, making it an essential item for any scheduled transmission overhaul.
Symptoms of Failure
When the seals within the 4181.298.023 kit begin to fail, operators will notice distinct performance degradation. The most common indicators include:
- External oil seepage at the bell housing or PTO cover: Visible drips or wet spots around the transmission case indicate that the main shaft seal or gasket has hardened.
- Delayed or harsh gear engagement: Worn internal seals allow clutch pack pressure to bleed off, causing a noticeable lag when shifting from neutral to forward or reverse.
- Contaminated transmission fluid: If the cooler circuit seals fail, coolant can mix with the oil, producing a milky or foamy appearance on the dipstick.
- Erratic clutch modulation: Inconsistent seal compression leads to unpredictable torque delivery, often felt as a shudder during low-speed maneuvering.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4181.298.023 |
| Kit Contents | 12x O-rings, 4x shaft seals, 2x gaskets, 1x quad ring |
| Material Composition | Nitrile rubber (NBR) / FKM (Viton) for high-temp zones |
| Operating Temperature Range | -40°C to +150°C (-40°F to +302°F) |
| Maximum Pressure Rating | 25 bar (362 psi) static |
| Weight (packaged) | 0.45 kg (1.0 lb) |
| OEM Reference | ZF Friedrichshafen AG |
Compatibility
This genuine 4181.298.023 seal repair kit is engineered for use in several ZF heavy-duty transmission families commonly found in construction machinery. It is a direct fit for the following models:
- ZF WG180 (6-speed powershift, used in wheel loaders and graders)
- ZF WG200 (8-speed variant for larger dozers and excavators)
- ZF WG120 (compact powershift for backhoe loaders)
- ZF 4WG-200 (4-speed version with integrated torque converter)
While primarily designed for these series, the kit may also be compatible with certain ZF Ecomat and ZF AS Tronic off-highway derivatives. Always cross-reference your transmission serial number with the OEM parts catalog to confirm fitment before installation.
Part details
ZF part number: 4181298023
Part name: seal repair kit
Please contact us to confirm fitment and interchange for your specific application.
