Overview
This genuine ZF 6073.017.192 component is a critical internal actuator and sealing assembly designed specifically for the WG 190 Series transmission. It governs hydraulic pressure flow within the valve body, ensuring precise clutch engagement and torque converter lock-up. The SKU 6073.017.192 sits directly between the main control module and the rotating clutch drums, acting as a high-pressure fluid director. When paired with a robust TRANSMISSION HOUSING, this part maintains the integrity of the entire hydraulic circuit, preventing cross-contamination between lubrication and actuation circuits.
Symptoms of Failure
- Delayed engagement when shifting from Neutral to Drive: A worn 6073.017.192 often causes a 2-3 second lag before the transmission engages, a common long-tail search query for “ZF WG190 slow engagement.”
- Intermittent gear slipping under moderate load: As the internal seals degrade, hydraulic pressure bleeds off, causing the transmission to momentarily lose drive in 3rd or 4th gear, especially when climbing grades.
- Visible fluid seepage around the valve body cover: Cracking of the actuator body leads to external oil leaks, often mistaken for a failing HOUS.FRONT SECT gasket.
- Harsh or “clunking” reverse engagement: Loss of damping pressure from this assembly results in abrupt reverse gear application, a symptom frequently searched as “ZF transmission reverse slam.”
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 6073.017.192 |
| Material | High-tensile aluminum alloy with nitrile rubber seals |
| Weight | 0.85 kg (1.87 lbs) |
| Overall Length | 142 mm |
| Bore Diameter | 28.5 mm |
| Operating Pressure | 12-18 bar (174-261 psi) |
| Temperature Range | -40°C to +120°C |
| OEM Reference | ZF 6073.017.192 (Genuine) |
Compatibility
This genuine ZF 6073.017.192 is engineered for the WG 190 Series but is also mechanically interchangeable with the WG 180 and WG 200 transmissions produced after 2015. It is not compatible with the earlier WG 160 series without modifying the HOUSING REAR PART mounting bosses. For proper installation, ensure the transmission serial number falls within the range of 190.001 to 190.999. Always replace the HOUSING REAR SECTION gasket simultaneously to prevent future leaks.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101088 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4657201183 | HOUS.FRONT SECT | Front section housing the torque converter |
| 4657201184 | HOUSING REAR PART | Rear casing for output shaft support |
| 4657298111 | HOUSING REAR SECTION | Intermediate housing section for clutch packs |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | M10 x 30mm fastener for valve body |
| 4681301015 | FIXING PLATE | Retaining plate for actuator assembly |
| 4681301016 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4681301017 | SCREEN SHEET | Coarse mesh pre-filter for oil pump |
| 0636100803 | CAP SCREW | M8 x 20mm fastener for housing cover |
Frequently Asked Questions
Q: Can the ZF 6073.017.192 be repaired with a seal kit?
A: No. This is a non-serviceable OEM assembly. Attempting to replace only the seals often leads to internal bore damage. ZF recommends full replacement of the SKU 6073.017.192 unit whenever failure symptoms appear.
Q: Does this part require special tools for installation?
A: Yes. A torque wrench calibrated to 25 Nm and a seal installer tool are mandatory to avoid crushing the internal O-rings. Always consult the WG190 service manual for specific tightening sequences.
Q: How does this part interact with the TRANSMISSION HOUSING?
A: The 6073.017.192 mounts directly into the valve body cavity of the TRANSMISSION HOUSING. It receives pressurized oil from the pump and distributes it to the clutch circuits via internal passages machined into the housing.
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