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16.5 x 2 x 23 mm Oil Drain Plug Washer for CSC RX4
Original replacement component for CSC RX4. This part is identified by CSC Z408-132 and Zongshen manufacturer code 100106556.
What This Part Does and Why You Might Need It
This sealing washer fits the engine oil drain plug and helps prevent oil seepage following an oil change. Replace a missing or crushed washer; check the drain plug and sealing surface if leakage persists.
OEM Identification and Specifications
- CSC SKU: Z408-132
- Zongshen manufacturer reference (2026 stock export): 100106556
- Product type: Oil drain washer
- Position: Engine oil drain plug
- Nominal 16.5 mm inside diameter, 23 mm outside diameter, 2 mm thick; drain plug washer; CSC diagram position 32
Fitment and Important Ordering Details
Cataloged CSC applications: RX4. This is one individually sold component, unless the description explicitly identifies a multi-piece assembly. Match the original part number, shape and dimension before ordering. Similar CG125/CG200/CG250 parts can vary by design and production revision; no unverified model compatibility is claimed.
- Brand: Pirate Mfg
- Condition: New
- SKU: Z408-132
- Manufacturer Part Number: 100106556
- Part Type: Oil drain washer
- Model: RX4
- Make: CSC Motorcycles
- Fitment Notes:: Factory parts books identify Z408-132 / 100106556 for CSC RX4. Confirm exact model, year and manufacturer number before purchase. Do not equate similar dimensions with verified interchange.
- Country of Manufacture: China
- Performance Part: No
- Items Included: Oil drain washer
- Number of Pieces: 1
- Country of Origin: China





