The 4137 121 1603 Spacer Flange is a genuine STIHL component designed to provide precise spacing and secure alignment between the carburetor and intake manifold. This durable flange ensures a tight seal, maintaining proper airflow and fuel delivery for smooth and reliable engine performance.
Key Features
✅ Part Number: 4137 121 1603
✅ OEM Quality: Genuine STIHL spacer flange
✅ Precision-Machined Fit: Ensures correct alignment of intake and carburetor components
✅ Durable Material: Resistant to fuel, heat, and vibration
✅ Sealing Surface: Helps prevent air and fuel leaks for optimal engine function
Benefits
✔️ Maintains Proper Airflow – Supports consistent fuel-air mixture for stable idling and power
✔️ Prevents Leaks – Ensures airtight connection between carburetor and intake
✔️ Restores Engine Performance – Fixes poor running or starting caused by intake misalignment
✔️ Quick Installation – Direct OEM replacement, no modification needed
✔️ Built to STIHL Standards – Reliable, long-lasting performance under demanding use
What It’s Used For
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Replacing a cracked, warped, or missing spacer flange
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Supporting carburetor or intake manifold installation
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Maintaining proper sealing and alignment during engine servicing
