Elring 099.252 Cylinder Head

Elring 099.252 Cylinder Head Plug – Precision Engineered for Optimal Valve Train Performance

The Elring 099.252 Cylinder Head Plug is a high‑quality sealing component designed to secure the rocker arm shaft mounting bore in BMW and BERTONE engines. Manufactured by Elring, a leading name in automotive sealing solutions, this plug delivers reliable performance under extreme operating conditions.

Key Features & Benefits

• Exact Fitment: Engineered to match the original specifications for BMW series 3 (E21/E30), series 5 (E12/E28/E34), and BERTONE free‑climber models.
• Durable Construction: Made from premium nitrile rubber (NBR) or high‑performance elastomer blends, ensuring long life even at high temperatures and pressures.
• Sealing Integrity: Provides a tight seal around the rocker arm shaft, preventing oil leakage and maintaining optimal valve timing.
• Easy Installation: Designed for straightforward replacement with standard tools; no special equipment required.
• OEM Quality Assurance: Meets or exceeds original equipment manufacturer (OEM) standards, guaranteeing compatibility and reliability.

Technical Specifications

Installation Guide

1. Preparation: Remove the old plug by gently tapping it out with a rubber mallet. Clean the bore thoroughly to remove any debris or oil residue.
2. Inspection: Verify that the bore is free of cracks or excessive wear. If damage is detected, consider replacing the entire cylinder head assembly.
3. Insertion: Align the new plug with the bore and press it in until fully seated. Ensure a snug fit without forcing; the plug should lock into place naturally.
4. Torque Check: While the plug is not typically torqued, confirm that it remains secure during engine operation by checking for any movement after a short test run.
5. Final Test: Start the engine and monitor for oil leaks around the rocker arm shaft area. A properly installed plug will eliminate all leakage.

Maintenance & Troubleshooting

• Regular Inspection: During routine maintenance, inspect the plug for signs of wear such as cracking or hardening. Replace if any damage is observed.
• Leak Detection: If oil leakage persists after replacement, check adjacent seals (e.g., valve cover gasket) and ensure proper torque on surrounding fasteners.
• Temperature Monitoring: Excessive heat can degrade the rubber. Use a temperature gauge to confirm operating temperatures remain within specified limits.

Why Choose Elring?

Elring’s reputation for precision engineering and quality control makes the 099.252 plug an excellent choice for both professional mechanics and DIY enthusiasts. The component is backed by rigorous testing protocols, ensuring that each unit performs consistently across a wide range of operating conditions.

Compatibility Summary

Conclusion

The Elring 099.252 Cylinder Head Plug exemplifies engineering excellence, offering a reliable seal for the rocker arm shaft mounting bore in a variety of BMW and BERTONE engines. Its precise fitment, durable material construction, and straightforward installation make it an indispensable component for maintaining engine integrity and performance.

Whether you are restoring a classic BMW or ensuring the longevity of a modern BERTONE powerplant, this plug provides the confidence that your valve train will operate smoothly and efficiently for years to come.