Overview
The ZF 0501.338.477 OIL LEVEL INDIC is a precision-engineered monitoring component designed for the BP210, BP230, and WG190 series transmissions. This genuine OEM part provides a clear, accurate visual reference of the oil level within the transmission housing, ensuring optimal lubrication and preventing costly dry-start damage. The SKU 0501.338.477 sits directly on the transmission side cover or sump, offering a direct view of the fluid bath. For a secure seal during installation, pair this indicator with a new 0634313603: O-RING to prevent contaminants from entering the system.
Symptoms of Failure
- Transmission fluid seepage around the sight glass: A cracked or degraded OIL LEVEL INDIC allows oil to weep down the housing, leading to low fluid levels and potential gearbox overheating.
- Cloudy or discolored viewing window: Internal chemical breakdown or thermal stress causes the indicator lens to fog, making it impossible to verify the correct oil level during routine checks.
- Intermittent gear slipping under load: When the indicator fails and oil escapes unnoticed, the hydraulic pressure drops, causing delayed engagement or slipping in the BP210 and WG190 series.
- Visible cracks or impact damage on the housing: Physical damage from debris or improper handling compromises the structural integrity of the indicator, requiring immediate replacement.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0501.338.477 |
| Material | High-impact polyamide with glass-reinforced viewing window |
| Weight | 0.12 kg (0.26 lbs) |
| OEM Reference | ZF 0501.338.477 |
| Thread Size | M18 x 1.5 (estimated) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF OIL LEVEL INDIC is engineered for the following transmission models: BP210, BP230, WG190, and WG210 series. It is also a direct fit for the WG180 and WG200 variants when used with the correct mounting hardware. To secure the indicator to the housing, use a 0636100801: CAP SCREW and a 0631306816: CYLINDRICAL PIN for precise alignment. Additionally, the 0636115293: 螺栓 is often required to fasten the indicator bracket on heavy-duty applications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0636115293 | 螺栓 | Secures the indicator assembly to the transmission case |
| 0634313603 | O-RING | Provides a leak-proof seal between the indicator and housing |
| 0631306816 | CYLINDRICAL PIN | Aligns the indicator during installation to prevent cross-threading |
| 0636100801 | CAP SCREW | Fastens the indicator cover plate |
| 4681301015 | FIXING PLATE | Holds the indicator in position against vibration |
| 4681301016 | SCREEN SHEET | Filters debris from oil entering the indicator channel |
| 4681301017 | SCREEN SHEET | Secondary filtration for high-contaminant environments |
| 0636100803 | CAP SCREW | Alternate fastener for indicator mounting on WG190 series |
| 0750100162 | OIL FEED.HOUSG. | Directs oil flow to the indicator for accurate reading |
| 4656301023 | GASKET | Provides a secondary seal between the indicator and sump |
Frequently Asked Questions
Q: How do I know if the 0501.338.477 indicator is compatible with my WG210 transmission?
A: This part is a direct OEM fit for the WG210 series. Verify that your transmission has a threaded M18 port on the side housing. If your unit uses a different thread pitch, you may need the 0636100803: CAP SCREW adapter kit.
Q: Can I replace the OIL LEVEL INDIC without draining the transmission fluid?
A: Yes, if the vehicle is parked on level ground and the oil is cold. Remove the old indicator quickly and install the new one with a fresh 0634313603: O-RING to minimize fluid loss. Expect less than 0.1 liters of spillage.
Q: What causes the viewing window to turn yellow or opaque?
A: Prolonged exposure to high heat (above 110°C) or chemical attack from degraded transmission fluid. Replace the indicator immediately and inspect the 4681301015: FIXING PLATE for warping.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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ZF 0501.338.477 Part Context
ZF 0501.338.477 is listed in the local BOM as OIL LEVEL INDIC. Use the exact ZF number when confirming replacement or RFQ details.
Compatibility and Assembly Context
4 BP 210, 4 BP 230, 5 WG 190, 5 WG 210
Cross Reference
860337677, 860569427
Replacement Scenario
Use this oil level indic listing to confirm the part number, assembly section, and image evidence before procurement.
Specification Snapshot
| ZF Number | 0501.338.477 |
|---|---|
| Name | OIL LEVEL INDIC |
| Sections | TRANSMISSION HOUSING |
Related PartsZF Hubs
FAQ
Can this part be ordered directly from the number?
Use the ZF number as the primary lookup key, then confirm assembly context and cross-reference evidence before purchase.
Does this page replace fitment confirmation?
No. Final fitment should be confirmed against the machine, transmission family, and available BOM or diagram evidence.
Fact sources: zf_bom.db:parts_master, zf_bom.db:illustration_items, zf_bom.db:assembly_model_map, zf_bom.db:part_cross_references, zf_bom.db:media_library, data/online_product_map_cache.json
