Overview
This OEM genuine ZF 5008.800.365 is a critical internal component engineered for heavy-duty construction machinery transmissions. Specifically designed as a hydraulic control valve or clutch piston assembly, it regulates fluid pressure to engage and disengage gear sets within the transmission housing. The SKU 5008.800.365 ensures precise modulation of hydraulic circuits, directly influencing shift timing and torque transfer under extreme loads. As a factory-original part, it guarantees exact fitment and metallurgical integrity, preventing premature wear in demanding earthmoving and material handling equipment.
Symptoms of Failure
When the ZF 5008.800.365 begins to degrade, operators will notice distinct performance issues. Recognizing these signs early can prevent catastrophic transmission damage.
- Delayed or harsh gear engagement: A worn valve or piston causes sluggish shifts, particularly when moving from neutral to drive or reverse under load.
- Intermittent loss of hydraulic pressure: Internal leakage leads to erratic clutch pack application, resulting in transmission slipping during uphill climbs or heavy digging.
- External oil seepage at the valve body interface: Degraded seals or micro-cracks in the housing allow ATF to escape, leaving visible drips on the transmission pan or bell housing.
- Unusual whining or knocking noises: Cavitation from improper fluid flow creates audible metallic sounds, especially at low RPM or during cold starts.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 5008.800.365 |
| OEM Reference | ZF 5008.800.365 (Genuine) |
| Material | Hardened alloy steel with nitrided surface |
| Overall Diameter | 85 mm ± 0.5 mm |
| Overall Length | 120 mm ± 1.0 mm |
| Weight | 0.95 kg (2.1 lbs) |
| Operating Pressure | 18–22 bar (260–320 psi) |
| Temperature Range | -30°C to +120°C (-22°F to +248°F) |
Compatibility
This genuine ZF 5008.800.365 component is primarily used in the following ZF transmission models commonly found in construction machinery:
- ZF WG180 — Widely deployed in wheel loaders and telescopic handlers.
- ZF WG200 — Found in medium-duty excavators and backhoe loaders.
- ZF WG210 — Used in heavy-duty graders and compactors.
- ZF 4WG200 — A four-speed variant for articulated dump trucks.
Always verify your transmission serial number against the OEM parts catalog before installation. For cross-referencing, consult a certified ZF service center.
