Overview
The ZF 0734.310.403 is a critical OEM genuine component engineered specifically for the WG 160 Series transmission. This part functions as a precision-machined sealing and alignment element within the transmission housing assembly, ensuring proper oil flow and structural integrity under high-torque conditions. The SKU 0734.310.403 interfaces directly with the main housing sections to prevent fluid migration and maintain gear train alignment. When installed correctly, this genuine ZF part restores factory-specified clearances and eliminates premature wear caused by housing distortion.
Symptoms of Failure
- External oil seepage at housing joints – A worn 0734.310.403 often causes transmission fluid to weep from the mating surfaces between the front and rear housing sections, particularly during cold starts or after extended highway operation.
- Intermittent gear engagement hesitation – As this part degrades, internal oil pressure fluctuations can lead to delayed clutch pack engagement, creating a “slipping” sensation when shifting from neutral to drive or reverse.
- Abnormal metallic whine during acceleration – Loss of precise alignment from a failing 0734.310.403 allows gear shafts to micro-misalign, producing a high-pitched whine that intensifies under load.
- Contaminated transmission fluid with debris – Cracks or deformation in this component can allow wear particles from the housing to circulate through the hydraulic system, visible as dark specks on the dipstick.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0734.310.403 |
| Material | High-grade aluminum alloy with corrosion-resistant coating |
| Weight | 0.85 kg (1.87 lbs) |
| Overall Length | 142 mm |
| Mounting Hole Diameter | 12.5 mm |
| OEM Reference | ZF 0734.310.403 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF 0734.310.403 is primarily designed for the WG 160 Series transmission family. It is also compatible with the WG 180 and WG 200 series models that share the same housing architecture. The part directly interfaces with the 4656201075: HOUS.FRONT SECT and the 4656201035: HOUSING REAR PART. For complete assembly, it also works with the 4472239178: HOUSING REAR PART variant and requires the 0631306816: CYLINDRICAL PIN for precise alignment during installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656201075 | HOUS.FRONT SECT | Front housing section that mates with 0734.310.403 |
| 4656201035 | HOUSING REAR PART | Rear housing section for WG series transmissions |
| 4472239178 | HOUSING REAR PART | Alternate rear housing variant |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100817 | CAP SCREW | Fastener for securing housing sections |
| 4656301016 | SCREEN SHEET | Filter screen for oil circuit protection |
| 4656301017 | SCREEN SHEET | Secondary filter screen variant |
| 0636100803 | CAP SCREW | Alternate cap screw for housing |
| 0501316470 | BREATHER | Pressure equalization valve for transmission |
| 0750301003 | OIL FEED.HOUSG. | Oil feed line housing connector |
Frequently Asked Questions
Q: Can I install the ZF 0734.310.403 without replacing the housing seals?
A: It is strongly recommended to replace all associated seals and the 0631306816: CYLINDRICAL PIN simultaneously, as worn alignment pins can cause premature failure of the new component.
Q: How do I verify if my WG160 needs this part?
A: Inspect for oil stains between the 4656201075: HOUS.FRONT SECT and the rear housing. If you observe any fluid residue, the 0734.310.403 likely requires replacement.
Q: Is this part interchangeable with aftermarket versions?
A: Only OEM genuine ZF 0734.310.403 parts guarantee exact material hardness and dimensional tolerances. Aftermarket copies often fail within 6 months due to inferior alloy composition.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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