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€12.90
incl. 19% VAT plus shipping
This intake valve seat with a diameter of 36.4 mm for the BMW Isetta engine (Part No. 1-05990) serves as a new, hardened sealing surface for the intake valve in the cylinder head. It enables the restoration of proper compression and reliable heat dissipation, which is essential during an engine overhaul or restoration. Replacing worn valve seats significantly improves the Isetta engine’s starting performance, power, and smoothness.
Technical data
- Category
- BMW Isetta engine
- BMW part number
- 11120021114
- Item number
- 1-05990
- Condition
- Not specified – on request
- Weight
- 0 kg
Availability on request
No instant purchase: after your request you will receive a personal quote including shipping costs.
Philipp Schäper
BMW Isetta specialist
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Product info
This intake valve seat with a diameter of 36.4 mm for the BMW Isetta engine (Part No. 1-05990) serves as a new, hardened sealing surface for the intake valve in the cylinder head. It enables the restoration of proper compression and reliable heat dissipation, which is essential during an engine overhaul or restoration. Replacing worn valve seats significantly improves the Isetta engine’s starting performance, power, and smoothness.
Database ID: 589 Accessed on: 22.06.2026 22:18 Data state: 22.05.2026 12:33 In stock since: 18.11.2025