Description
Overview:
This Oil Seal (Flywheel Side) is a genuine Stihl component for the crankshaft on the flywheel side of Stihl cut-off saw engines. It is designed to keep the crankcase properly sealed, helping to prevent oil leakage and air ingress so the engine maintains correct compression and vacuum. Made from durable materials suited to engine use, it supports reliable running and long service life. Sized for a precise fit at 17 x 28 x 7 mm (approx 0.67 x 1.10 x 0.28 inches), it is ideal for maintenance or overhaul work. Suited to professional and DIY users alike, it is commonly used on Stihl TS400 and TS460 models where dependable sealing is essential for performance and longevity.
Key Features:
- Genuine Stihl OEM part for assured compatibility and quality (Manufacturer Part Number: 9640 003 1745)
- Correct location: flywheel-side crankshaft seal for Stihl cut-off saw engines
- Dimensions: 17 x 28 x 7 mm (approx 0.67 x 1.10 x 0.28 inches) for an accurate, interference fit
- Helps maintain crankcase sealing to reduce oil leaks and prevent air leaks that affect tuning
- Supports smooth running, easier starting, stable idle, and consistent performance
- Built for engine environments with good resistance to heat and common lubricants
- Straightforward to fit with appropriate tools; designed to seat securely in the housing
- Suited to regular maintenance or full engine rebuilds to restore sealing integrity
Typical Applications:
Replacement of a worn or damaged flywheel-side crankshaft seal on Stihl cut-off saws. Used during servicing to cure oil seepage behind the flywheel, resolve air leaks that cause lean running, or as part of a comprehensive engine rebuild to restore correct crankcase pressure and overall reliability.
Also known as:
Crankshaft seal (flywheel side), crank seal, radial shaft seal, rotary shaft seal, lip seal, seal ring, engine seal, shaft seal.
Fits Models:
TS400, TS460, TS700, TS800
Alternate Part Numbers:
9640-003-1745, 96400031745
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