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Elring 187.666 Engine Valve Stem Oil Seal
| Brand | Elring 187.666 |
|---|---|
| Inside Diameter | 14.0 |
| Material | FPM (fluoride rubber) |
| Outside Diameter | 18.0 |
| Thickness | 13.6 |
| Valve Stem Diameter [Mm] | 8 |
| Fits | BMW · 10 vehicles |
FPM rubber. Resists heat and oil for dependable valve stem sealing.
Valve stem seal. Helps control oil flow around the valve stem.
Cross-references 1 256 556.4, 1 261 269.4 and 11 34 1 252 363 for the same application. See all 12.
Elring 187.666 Valve Stem Oil Seal
Elring 187.666 is an engine valve stem oil seal made from FPM (fluoride rubber) for controlled sealing at the valve stem. With an inside diameter of 14.0 mm, outside diameter of 18.0 mm, thickness of 13.6 mm, and valve stem diameter of 8 mm, it is specified for select BMW inline-six applications.
Key Features
- FPM (fluoride rubber) construction for high-temperature sealing performance
- Inside diameter: 14.0 mm
- Outside diameter: 18.0 mm
- Thickness: 13.6 mm
- Valve stem diameter: 8 mm
- Elring part number 187.666 for direct catalog lookup
Detailed Description
This Elring valve stem oil seal is used in the cylinder head to help maintain proper oil control around the valve stem area. It is listed for 1975-1978 BMW 530i, 1977-1979 BMW 320i, 1979 BMW 528i, and 1980-1981 BMW 528i, with fitment notes calling out the 13.6 mm height, 14 mm inner diameter, and 18 mm outer diameter. For BMW 528i and BMW 320i service work, Elring 187.666 provides the dimensional match needed for the specified engine sealing application.
This part cross-references BMW 11 34 1 252 363 and 11 34 1 256 556 for the same application.
What It Helps Address
- Oil entering the combustion chamber through worn valve stem seals
- Blue exhaust smoke during startup or deceleration
- Oil consumption caused by hardened or aged stem seals
- Valve guide area leakage during cylinder head service
- Restoration work on BMW 530i, 320i, and 528i engines
Installation Notes and Tips
Verify valve stem diameter, seal height, and outer diameter before installation. Clean the valve guide and stem area thoroughly, and inspect the valve stem and guide for wear that could affect sealing. During cylinder head service, confirm the seal seats fully and evenly to maintain proper oil control. Use the exact fitment notes for the listed BMW 530i, 320i, and 528i applications when matching this seal to the engine.
Quality Assurance
Elring is an established engine sealing brand, and this seal is built to the listed dimensional specifications for the confirmed BMW applications. Elring 187.666 is cataloged for precise engine sealing service where the original dimensions are required.
| Year | Make | Model | Drive Type | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 1981 | BMW | 528i | RWD | 2.8L | L6 | GAS | N/A | Height: 13.6mm; Inner Diameter: 14mm; Outer Diameter: 18mm |
| 1980 | BMW | 528i | RWD | 2.8L | L6 | GAS | N/A | Height: 13.6mm; Inner Diameter: 14mm; Outer Diameter: 18mm |
| 1979 | BMW | 320i | — | 2.0L | L4 | — | N/A | Height: 13.6mm; Inner Diameter: 14mm; Outer Diameter: 18mm |
| 1979 | BMW | 528i | — | 2.8L | L6 | — | N/A | Height: 13.6mm; Inner Diameter: 14mm; Outer Diameter: 18mm; To 08/1978 |
| 1978 | BMW | 320i | — | 2.0L | L4 | — | N/A | Height: 13.6mm; Inner Diameter: 14mm; Outer Diameter: 18mm |
| 1978 | BMW | 530i | — | 3.0L | L6 | — | N/A | Height: 13.6mm; Inner Diameter: 14mm; Outer Diameter: 18mm; To 08/1978 |
| 1977 | BMW | 320i | RWD | 2.0L | L4 | GAS | N/A | Height: 13.6mm; Inner Diameter: 14mm; Outer Diameter: 18mm |
| 1977 | BMW | 530i | — | 3.0L | L6 | — | N/A | Height: 13.6mm; Inner Diameter: 14mm; Outer Diameter: 18mm; To 08/1978 |
| 1976 | BMW | 530i | — | 3.0L | L6 | — | N/A | Height: 13.6mm; Inner Diameter: 14mm; Outer Diameter: 18mm; To 08/1978 |
| 1975 | BMW | 530i | — | 3.0L | L6 | — | N/A | Height: 13.6mm; Inner Diameter: 14mm; Outer Diameter: 18mm; To 08/1978 |
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