Description
The Audi Gasket 059121091B (often listed with suffix variations like B388) is a genuine OEM coolant system gasket / sealing ring designed to provide a leak-proof seal between cooling system components such as pipes, housings, or connectors.
It plays a crucial role in maintaining proper coolant flow and pressure within the engine, preventing coolant leakage and ensuring optimal engine temperature regulation. This gasket is commonly used in Audi 3.0L TDI engines and related cooling assemblies.
Specifications
- Product Type: Coolant System Gasket / Seal Ring
- OEM Part Number: 059121091B
- Supersedes: 059121091A
- Material: High-quality rubber / composite sealing material
- Fitment Type: Direct OEM replacement
- Condition: New / Genuine OEM
- Application: Engine cooling system sealing
- Design: Precision-molded for tight sealing under heat and pressure













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