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- 1129 640 1900 – STIHL Tensioner Slide (Genuine OEM Part)
Description
1129 640 1900 – STIHL Tensioner Slide (Genuine OEM Part)
The STIHL 1129 640 1900 Tensioner Slide is a genuine OEM chain adjustment component designed to guide and support accurate chain tensioning on compatible STIHL chainsaws. This tensioner slide works with the chain tensioning mechanism to ensure smooth, controlled movement of the guide bar for precise chain adjustment.
Manufactured to STIHL’s exact original equipment specifications, the 1129 640 1900 tensioner slide provides precise fitment, durable construction, and reliable performance under continuous load and vibration. Proper function of the tensioner slide is essential for maintaining correct chain tension, reducing wear, and ensuring safe chainsaw operation.
Product Details
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Part Number: 1129 640 1900
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Brand: STIHL
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Part Type: Chain Tensioner Slide
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OEM Status: Genuine STIHL OEM
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Condition: New
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Function: Guides chain tension adjustment
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Material: High-strength, wear-resistant engineered material
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Installation: Direct-fit OEM replacement
Compatibility
The STIHL 1129 640 1900 Tensioner Slide is used on select STIHL chainsaw models equipped with side-mounted or internal chain tensioning systems. It is typically installed within the chain tensioner and guide bar mounting assembly, enabling precise bar movement during chain adjustment.
Applications
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Chain tensioning system
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Guide bar adjustment assembly
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Chainsaw cutting system components
The 1129 640 1900 STIHL Tensioner Slide delivers OEM-level fit and dependable chain adjustment performance, making it the correct replacement part for maintaining proper chain tension and safe, efficient operation on compatible STIHL chainsaws.

