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- 1122 640 2002 – Chain Sprocket 3/8" 7T (Genuine STIHL OEM Part)
Description
1122 640 2002 – Chain Sprocket 3/8" 7T (Genuine STIHL OEM Part)
The STIHL 1122 640 2002 Chain Sprocket is a genuine STIHL OEM drive sprocket featuring a 3/8" pitch with 7 teeth (7T), engineered for high-torque professional chainsaws. This sprocket transfers engine power from the clutch to the saw chain, ensuring smooth acceleration, consistent chain speed, and reliable cutting performance under heavy loads.
Manufactured to original STIHL specifications, this sprocket is precision-machined for exact fitment, proper chain alignment, and long service life in demanding forestry and milling applications.
Product Details
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Part Number: 1122 640 2002
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Description: Chain Sprocket
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Pitch: 3/8"
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Tooth Count: 7T
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Component Type: Clutch drum / chain drive sprocket
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Brand: STIHL
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OEM Status: Genuine STIHL OEM replacement part
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Condition: New
Key Benefits
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Delivers efficient power transfer from clutch to chain
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Ensures correct chain engagement and alignment
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Reduces vibration and uneven wear on chain and bar
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Built for high-RPM, high-load professional use
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Direct OEM replacement for exact fit and performance
Applications
Used on STIHL professional chainsaws within oil pump and clutch assemblies, including:
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064, 064 R, 064 RW
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066 M, 066 MR
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MS 650 Magnum, MS 650-R Magnum
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MS 660 Magnum, MS 660-R Magnum
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MS 661 Magnum, MS 661 C-M Magnum, MS 661 C-M R Magnum, MS 661-R Magnum
The 1122 640 2002 STIHL Genuine OEM 3/8" 7-Tooth Chain Sprocket restores correct drivetrain operation and helps maintain optimal cutting performance according to factory specifications.
