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Description
4229 435 1700 STIHL Protective Cap – Genuine OEM Fan Housing Part
The STIHL Protective Cap (4229 435 1700) is a genuine OEM internal component designed to protect key areas inside the fan housing assembly on select STIHL handheld blower and shredder vac models. This cap helps shield internal components from debris, dust, and damage while maintaining proper airflow and housing integrity.
Over time, protective caps may become cracked, loose, or damaged due to vibration, debris impact, or repeated servicing. A missing or damaged cap can expose internal components to contamination, potentially affecting blower performance and long-term reliability. Replacing it with the correct OEM part helps restore proper internal protection without replacing the entire fan housing assembly.
Manufactured to STIHL factory specifications, this genuine protective cap ensures correct fitment, secure installation, and durable performance under professional operating conditions.
Product Details
OEM Part Number: 4229 435 1700
Brand: STIHL (Genuine OEM)
Part Type: Protective Cap
Application: Fan housing internal protection
Condition: New Genuine OEM Part
Function
This STIHL protective cap is designed to:
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Shield internal fan housing components from debris
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Maintain proper internal airflow routing
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Protect sensitive areas from dust and contamination
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Replace cracked, loose, or missing caps
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Help preserve overall blower system integrity
⚠️ A missing or damaged protective cap can allow debris intrusion and may reduce system reliability.
Verify Fitment (Recommended)
Before ordering, confirm:
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OEM part number 4229 435 1700
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Your unit model matches those listed below
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Application matches your STIHL illustrated parts diagram
⚠️ Fan housing components are model-specific — always verify by OEM part number and equipment type.
Compatibility
This OEM protective cap fits many STIHL blower and shredder vac models used with specific fan housing configurations, including:
Blowers / Shredder Vac Units
SH 55 (Fan housing inside SH 55)
SH 85 (Fan housing inside SH 85)
SH 85-D (Fan housing inside SH 85)
BG 45 (Fan housing, inside)
BG 45 C KAT (Fan housing, inside)
BG 46 (Fan housing inside BG 46)
BG 46 C KAT (Fan housing inside BG 46)
BG 46-D (Fan housing inside BG 46)
BG 55 (Fan housing, inside)
BG 65 (Fan housing, inside)
BG 65-D (Fan housing, inside)
BG 85 (Fan housing, inside)
BG 85-D (Fan housing, inside)
BG 85 C KAT (Fan housing, inside)
(Exact fitment depends on production version — always verify using OEM parts diagram.)
Installation Notes
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Remove fan housing cover as required
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Locate protective cap position inside housing
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Remove damaged or loose cap carefully
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Install new cap securely in correct orientation
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Ensure proper seating before reassembly
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Test blower operation after installation
⚠️ Always keep internal components clean during service to prevent contamination.
Maintenance Tips
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Inspect internal caps during routine blower service
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Replace caps showing cracks or loose fitment
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Keep fan housing area clean from debris buildup
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Always use genuine STIHL OEM components for correct fit and durability
