Overview
This OEM genuine ZF 6073.015.336 component is a critical internal actuation and sealing element specifically engineered for the WG 115 Series transmission. Positioned within the valve body and hydraulic control assembly, this part manages fluid routing and pressure modulation essential for clutch pack engagement. The SKU 6073.015.336 ensures precise fitment and OEM-grade material integrity, directly influencing shift quality and torque transfer efficiency. When installed alongside the 4656101057: TRANSMISSION HOUSING, it forms a sealed hydraulic circuit that prevents cross-port leakage.
Symptoms of Failure
- Erratic or delayed gear engagement — Worn sealing surfaces cause internal pressure loss, leading to hesitation when shifting from Neutral to Drive or Reverse.
- Transmission fluid seepage at valve body interface — Deterioration of the 6073.015.336 allows ATF to bypass seals, visible as wet spots around the housing mating area.
- Harsh or flared shifts under load — Inconsistent hydraulic pressure from a failing part results in abrupt clutch application or momentary slip during acceleration.
- Intermittent loss of forward or reverse gears — Advanced wear can cause complete circuit failure, leaving the transmission in a default limp-home mode.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | ZF 6073.015.336 |
| Material | Hardened alloy steel with nitrile sealing elements |
| Weight | 0.42 kg (0.93 lbs) |
| Length | 98 mm |
| Width | 45 mm |
| Height | 32 mm |
| Operating Pressure Range | 8–18 bar |
| Temperature Range | -40°C to +150°C |
| OEM Reference | ZF WG 115 Series |
Compatibility
This ZF 6073.015.336 part is primarily designed for the WG 115 series, but its hydraulic actuation design also makes it compatible with select ZF WG models that share the same valve body architecture. Confirmed cross-compatible transmissions include the WG180, WG200, and WG250 series, provided the housing configuration matches. Always verify the 4656201075: HOUS.FRONT SECT and 4656201078: HOUSING REAR PART compatibility for your specific unit. For heavy-duty applications, the 4656298050: HOUSING REAR SECTION must be inspected for wear before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101057 | TRANSMISSION HOUSING | Main structural casing for gear and valve body assembly |
| 4656201075 | HOUS.FRONT SECT | Forward section housing pump and clutch drum |
| 4656201078 | HOUSING REAR PART | Rear casing supporting output shaft and planetary gears |
| 4656298050 | HOUSING REAR SECTION | Extended rear housing for PTO or auxiliary drives |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing-to-housing positioning |
| 4656301148 | FIXING PLATE | Retention plate for valve body and solenoid mounting |
| 0636100817 | CAP SCREW | M8 fastening bolt for housing sections |
| 4656301016 | SCREEN SHEET | Fine mesh filter for hydraulic fluid debris |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter for sump return line |
| 0636100803 | CAP SCREW | M10 bolt for valve body cover retention |
Frequently Asked Questions
Q: How do I know if the ZF 6073.015.336 needs replacement?
A: If you observe ATF leaking from the valve body area or experience inconsistent shift timing, inspect this part for cracked sealing edges or corrosion. A pressure test below 8 bar at idle confirms failure.
Q: Can I install this part without removing the transmission?
A: In most WG 115 applications, the valve body is accessible after draining fluid and removing the oil pan. However, access to the 4656201075: HOUS.FRONT SECT may require partial transmission dismounting for clearance.
Q: Is the 6073.015.336 interchangeable with earlier ZF part numbers?
A: No. This OEM genuine part is specific to the WG 115 revision. Using superseded numbers can alter hydraulic flow rates and cause premature clutch wear. Always reference your transmission serial number.
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