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Diaphragm
€6.95
incl. 19% VAT plus shipping
for vent
Technical data
- Category
- BMW Isetta engine
- BMW part number
- 11150032830
- Item number
- 1-0931
- Condition
- Not specified – on request
- Weight
- 0 kg
In stock
No instant purchase: after your request you will receive a personal quote including shipping costs.
Philipp Schäper
BMW Isetta specialist
Question about this item?
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General information about this item
Product info
The diaphragm with part number 1-0931 is the functional heart of the breather in the BMW Isetta engine, where it controls the pressure-dependent opening and closing of the crankcase ventilation system. During an engine or breather overhaul, an aged, hardened, or cracked diaphragm should always be replaced to prevent leaks and excessive oil mist. This restores the venting function in the restored BMW Isetta engine to be reliable and true to the original.
Database ID: 653 Accessed on: 01.08.2026 22:47 Data state: 22.05.2026 12:33 In stock since: 18.11.2025