Valve Stem Seals - Elring 308.970 & 308.630 | BMW / MINI B48 / F56

 Valve Stem Seals - Elring 308.970 & 308.630 | BMW / MINI B48
Elring 308.970 and 308.630 valve stem seal sets deliver exceptional oil control and long lasting sealing performance.

Manufactured from high quality FKM (fluoride rubber), these seals are designed to withstand extreme temperatures, high valve cycle stress and continuous oil exposure, making them ideal for engine rebuilds, servicing or performance upgrades.

✅ OE Grade Sealing for Reliable Valvetrain Performance
Whether you’re refreshing a high mileage daily driver or preparing a performance focused build, Elring valve stem seals help maintain consistent compression, prevent oil leakage and support smooth engine operation.

Perfect for:
Stock engine rebuilds
High mileage cylinder head servicing
Performance and tuned engines requiring stable oil control

🔧 Key Features:
Material: High temperature FKM (fluoride rubber)
Usage: Valve stem sealing
Condition: 100% brand new
Manufacturer: Elring, trusted OEM sealing specialist
Prevents oil leaks, maintains compression and supports smooth engine operation.

🧰 Compatibility & Sizes:
Red Seals - 308.970 (Viton, 5mm)
Valve Stem Ø: 5.00mm
Inner Ø: 10.00mm
Outer Ø: 22.70mm
Height: 21.50mm
Suitable for engines with 5mm valve stems. 
Please note: Some early engines use 5mm valve stem seals for inlets and exhausts

Green Seals - 308.630 (Viton, 6mm)
Valve Stem Ø: 6.00mm
Inner Ø: 10.00mm
Outer Ø: 22.70mm
Height: 21.00mm
Suitable for engines with 6mm valve stems, 
Please note: Later engines use 5mm for inlets and 6mm valve stem seals for exhausts.
 
🚗 Compatibility
These seals are used in various BMW and MINI engines, including the B48, but always verify specifications for your specific vehicle.

📦 What's in the Box?
✔️ Valve stem seal(s) - (Matching your application size choice)
✔️ Stem seal plastic guides