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- 4247 708 8401 – STIHL Screw Genuine OEM Part for SG 20 Pump
Description
4247 708 8401 – STIHL Screw Genuine OEM Part for SG 20 Pump
The STIHL Screw 4247 708 8401 is a genuine OEM replacement fastener designed for the SG 20 sprayer pump assembly. This screw is used to secure critical pump components in place, ensuring proper alignment, stability, and reliable operation during spraying applications.
Pump fasteners are essential for maintaining structural integrity under repeated pressure cycles and vibration. Over time, screws may become worn, corroded, stripped, or lost during servicing. A missing or damaged screw can lead to pump instability, leakage, or reduced performance.
Replacing the screw with the correct genuine STIHL OEM part restores proper pump assembly retention, safe operation, and long-term durability without replacing larger pump components.
Manufactured to STIHL factory specifications, this OEM screw ensures precise fitment, secure fastening strength, and dependable performance under demanding agricultural and landscaping conditions.
Product Details
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Part Number: 4247 708 8401
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Brand: STIHL
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Part Type: Screw / Pump Fastener
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Application: Pump assembly component fastening
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Condition: New Genuine OEM Part
Function
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Secures pump components in correct position
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Maintains alignment and stability during operation
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Replaces worn, stripped, or missing screws
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Prevents loosening under pressure and vibration
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Supports reliable pump performance
⚠️ Missing fasteners may cause pump malfunction or leakage.
Verify Fitment (Recommended)
Before ordering, confirm:
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OEM part number 4247 708 8401
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Your unit model matches those listed below
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Application matches your STIHL illustrated parts diagram
⚠️ Fasteners are model-specific — always verify by OEM part number.
Compatibility
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STIHL SG 20 (Pump Assembly)
(Exact fitment depends on production version — always verify using OEM parts diagram.)
Installation Notes
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Relieve sprayer pressure before servicing
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Access pump assembly components as required
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Remove damaged or missing screw
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Install new screw securely in correct location
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Reassemble pump and test for proper operation
⚠️ Do not overtighten to avoid stripping threads.
Maintenance Tips
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Inspect pump fasteners regularly
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Replace corroded or stripped screws promptly
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Keep pump assembly clean and dry
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Store sprayer in dry conditions
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Always use genuine STIHL OEM pump fasteners
