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€12.90
incl. 19% VAT plus shipping
The 36.4 mm exhaust valve seat with part number 1-05995 serves as a high-load sealing and contact surface for the exhaust valve in the BMW Isetta engine and is crucial for compression and heat dissipation. During an engine overhaul or restoration, the old, worn-in, or burnt valve seat is pressed out, the new seat is pressed in, and the valve seat surface is then precisely re-machined. This reliably resolves compression losses, poor starting performance, and overheating of the exhaust valve.
Technical data
- Category
- BMW Isetta engine
- BMW part number
- 11120021509
- Item number
- 1-05995
- Condition
- Used original part
- 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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General information about this item
Product info
The 36.4 mm exhaust valve seat with part number 1-05995 serves as a high-load sealing and contact surface for the exhaust valve in the BMW Isetta engine and is crucial for compression and heat dissipation. During an engine overhaul or restoration, the old, worn-in, or burnt valve seat is pressed out, the new seat is pressed in, and the valve seat surface is then precisely re-machined. This reliably resolves compression losses, poor starting performance, and overheating of the exhaust valve.
Database ID: 591 Accessed on: 20.06.2026 17:58 Data state: 22.05.2026 12:33 In stock since: 18.11.2025