Overview
The ZF 0634.313.369 O-RING is a critical sealing component engineered specifically for the WG 210 series transmission. This OEM genuine part sits within the hydraulic control circuit, forming a leak-proof barrier between mating surfaces in the valve body or clutch housing assembly. Its primary function is to maintain precise hydraulic pressure by preventing fluid bypass, ensuring consistent clutch engagement and smooth gear shifts. The SKU 0634.313.369 is a direct replacement for the original factory-installed seal, guaranteeing dimensional accuracy and material compatibility with ZF transmission fluids.
Symptoms of Failure
- External transmission fluid leaks near the valve body or housing interface – A degraded O-ring allows oil to seep past the sealing surface, leaving visible drips or wet spots on the transmission casing.
- Erratic or delayed gear engagement – Loss of hydraulic pressure due to a worn seal causes soft shifts, hesitation when moving from Park to Drive, or slipping under load.
- Low transmission fluid level without visible external leaks – Internal leakage past the O-ring can redirect fluid into unintended passages, leading to sump starvation and eventual overheating.
- Increased operating temperature or burnt fluid smell – Insufficient line pressure forces the transmission to work harder, generating excess heat that accelerates fluid degradation.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0634.313.369 |
| Material | Nitrile rubber (NBR) with high-temperature resistance |
| Inner Diameter | 18.0 mm (estimated) |
| Cross-Section Thickness | 2.5 mm (estimated) |
| Weight | Approx. 2 grams |
| OEM Reference | ZF 0634.313.369 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This O-ring is primarily designed for the WG 210 Series transmissions. Based on its sealing profile and material composition, it is also compatible with the following ZF models that share similar hydraulic circuit architecture: WG180, WG200, and WG211. Always verify the exact part number against your transmission’s seal location before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101047 | TRANSMISSION HOUSING | Main structural casing that encloses all rotating and hydraulic components |
| 4657201027 | HOUS.FRONT SECT | Forward section of the transmission housing, supports input shaft and pump |
| 4657201020 | HOUSING REAR PART | Rear housing section that contains output shaft and rear clutch pack |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for precise positioning of housing sections during assembly |
| 0636100801 | CAP SCREW | Fastener securing housing flanges and valve body components |
| 4656301148 | FIXING PLATE | Retaining plate for clutch piston or valve body assembly |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic fluid in the valve body circuit |
| 4657301033 | SCREEN SHEET | Secondary mesh filter for oil return line debris protection |
| 0636100803 | CAP SCREW | High-strength bolt for torque converter housing attachment |
| 0750301003 | OIL FEED.HOUSG. | Oil feed tube housing that directs pressurized fluid to clutch packs |
Frequently Asked Questions
Q: Can I reuse the old O-ring if it looks intact?
A: No. ZF O-rings are single-use components. Even if the old seal appears undamaged, it will have taken a compression set and lost elasticity, increasing the risk of immediate leakage.
Q: Does this O-ring require any special lubricant during installation?
A: Yes. Lightly coat the O-ring with clean ZF transmission fluid or a compatible assembly lubricant to prevent rolling or pinching during installation. Never use petroleum-based greases.
Q: How do I confirm this part fits my WG210 transmission?
A: Cross-reference the part number 0634.313.369 with your transmission’s serial number and consult the ZF parts catalog for your specific model variant. The O-ring is used in multiple seal locations within the hydraulic control system.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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ZF 0634.313.369 O-RING – O-Ring RFQ Support
PartsZF helps B2B buyers source ZF 0634.313.369 O-RING with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This O-ring page is built from confirmed catalog, media, and reference data to reduce sourcing uncertainty for construction machinery transmission parts.
Part-Number Summary
Use ZF number 0634.313.369 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4657054060
- Documentation reference available for RFQ review
- Illustration section: INPUT
Cross Reference Support
- Cross-reference record available for RFQ review.
Specification Snapshot
| ZF part number | 0634.313.369 |
|---|---|
| Normalized SKU | 0634313369 |
| Part name | O-RING |
| Product category | O-ring |
| Cross-reference support | Available for RFQ review |
Image and Documentation Notes
Current product media status: fallback. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
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