Description
Genuine BOSCH Auxiliary Air Valve (AAV) – OEM
Used • Tested • Cold Start & Idle Control
This OEM Bosch Auxiliary Air Valve (AAV) is a vital engine management component designed to regulate additional air flow during cold start and warm-up phases. By controlling idle air bypass when the engine is cold, it stabilizes idle speed, prevents stalling, and supports efficient fuel combustion.
Manufactured by Bosch to original factory specifications, this valve was used on classic Alfa Romeo and BMW Bosch fuel-injection systems.
Each unit is used OEM, carefully inspected, and tested to ensure proper operation.
🔧 Function & Benefits
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Regulates additional air during cold engine operation
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Stabilizes idle speed during warm-up
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Helps prevent cold stalling and rough idle
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Supports correct air-fuel mixture
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Essential for proper Bosch fuel injection operation
🧩 Part Numbers
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Bosch: 0 280 140 124
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Alfa Romeo: 116 46 11 017 0
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BMW: 13 63 1 272 103
🚗 Vehicle Compatibility
Alfa Romeo
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GTV-6 – 1983–1986
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Milano – 1987–1989
BMW (USA Models)
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528i – 1980–1981
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633CSi – 1980–1981
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733i – 1980–1981
BMW (Euro Models)
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E24 M6 / 635CSi Coupe
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E23 745i Sedan
✔ Gasoline engines
✔ Bosch fuel injection systems
✔ Naturally aspirated applications
🧪 Condition
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Used OEM Bosch part
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Fully tested for functionality
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No cracks or broken housings
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Normal cosmetic wear consistent with age
📦 Shipping & Handling
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Ships within 1–2 business days
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Securely packaged to prevent transit damage
⚠️ Important Notes
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Please verify part numbers and fitment before purchasing
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Intended for classic Bosch fuel-injection systems only
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Not compatible with modern EFI systems
