Original Bosch BMW E12 E23 E24 Auxiliary Air Slide Valve – 0280140124

Original Bosch auxiliary air slide valve for selected classic BMW models equipped with an M30 petrol engine and Bosch fuel injection.

The auxiliary air slide valve allows additional air to bypass the throttle valve while the engine is cold. As the valve warms up, the internal passage gradually closes and reduces the cold-start idle speed.

This is an original period Bosch component, not a modern reproduction.

Product details

• Product: Auxiliary air slide valve
• Alternative names: Auxiliary air valve, additional air slide valve, cold-start idle valve
• Manufacturer: Bosch
• Bosch number: 0 280 140 124
• BMW part number: 13 63 1 272 103
• Application: Bosch fuel-injection system
• Engine family: Primarily BMW M30
• Electrical connection: Two-pin connector
• Material: Cast aluminium housing
• Condition: Used

Confirmed BMW applications

BMW 5 Series E12

• 528i – selected 1979–1981 vehicles

BMW 6 Series E24

• 633 CSi – selected 1978–1984 vehicles

BMW 7 Series E23

• 733i – selected 1978–1984 vehicles

Additional cross-catalogue applications

Bosch and aftermarket application catalogues also associate 0 280 140 124 with selected versions of:

BMW E12

• 528i
• M535i

BMW E24

• 628 CSi
• 633 CSi
• 635 CSi

BMW E23

• 728i
• 732i
• 733i
• 735i
• 745i

Applications can differ according to production date, country specification and fuel-injection system. Some visually similar valves have different calibration or Bosch numbers.

Always compare Bosch number 0 280 140 124 and BMW number 13 63 1 272 103 with the original component before ordering. Compatibility based only on vehicle model is not guaranteed.

This part should not automatically be ordered for an E28. Many BMW E28 M30 applications use a different auxiliary air valve, including Bosch 0 280 140 133.

Part numbers

• Bosch: 0 280 140 124
• Bosch compact format: 0280140124
• BMW: 13 63 1 272 103
• BMW compact format: 13631272103
• BMW short number: 1272103

Condition

Used original Bosch component.

The aluminium housing shows visible oxidation, dirt, discolouration and general storage wear. The electrical connector, hose connections and mounting bracket are present. Please inspect all photographs carefully for the exact cosmetic condition.

Testing

This valve has not been function-tested and is sold as an untested used component. Cleaning and functional inspection before installation are recommended.

Included

• One Bosch auxiliary air slide valve
• Integrated mounting bracket

No hoses, clamps or additional mounting hardware are included.

Storage location: 203