Valve Stem Oil Seal for CSC TT250 SG250 CG250

$0.00

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Valve Stem Oil Seal for CSC TT250 SG250 CG250

Original replacement component for CSC TT250 and SG250. This part is identified by CSC ZT57-109 and Zongshen manufacturer code 100105336.

What This Part Does and Why You Might Need It

Seals around the valve stem to limit oil migrating down the valve guide. A failed seal can cause blue oil smoke after starting or deceleration and excessive oil consumption; worn guides and piston rings can produce similar symptoms.

OEM Identification and Specifications

  • CSC SKU: ZT57-109
  • Zongshen manufacturer reference (2026 stock export): 100105336
  • Product type: Valve stem oil seal
  • Position: Engine cylinder head / valve guide
  • Zongshen 100105336 valve-stem seal; CSC valve diagram item 3; sold individually

Fitment and Important Ordering Details

Cataloged CSC applications: TT250 and SG250. 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.

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