11340038720 Exhaust Valve Oil Seal For BMW N20B20/N52/N54//N55 Engines Parts OEM

11340038720 Exhaust Valve Oil Seal For BMW N20B20/N52/N54//N55 Engines Parts OEM

BMW Exhaust Valve Oil Seal (11340038720) - Vehicle Compatibility Chart

Engine Coverage Details:

• N52B25 (2.5L I6)

• N52B30 (3.0L I6)

• N54B30 (3.0L Twin Turbo I6)

• N55B30 (3.0L TwinPower Turbo I6)

Notes:

1. Also compatible with some N20/N26 4-cylinder turbo engines (please verify specific application)

2. Recommended to replace all exhaust valve seals when servicing

3. Always check valve stem diameter before installation

Product Overview

  The BMW Exhaust Valve Oil Seal (Part No. 11340038720) is a high-quality OEM replacement part designed to prevent engine oil from entering the combustion chamber through the exhaust valve guide. This ensures optimal engine performance, reduces oil consumption, and minimizes harmful emissions.

Key Features & Benefits

1. Precision Fit – Manufactured to meet BMW’s exact specifications for a perfect seal and long-lasting durability.
2.  High-Temperature Resistance – Made from heat-resistant materials (such as fluororubber or Viton®) to withstand extreme exhaust temperatures.
3. Oil Leak Prevention – Effectively stops oil from leaking into the exhaust system, preventing blue smoke, oil burning, and spark plug fouling.
4.  Improved Engine Efficiency – Helps maintain proper compression and reduces emissions for smoother engine operation.
5.  OEM Equivalent Quality – Direct replacement for the original BMW part, ensuring reliability and performance.

Symptoms of a Failing Exhaust Valve Oil Seal

1. Excessive oil consumption
2. Blue/gray smoke from the exhaust (especially on startup or acceleration)
3. Oil fouling on spark plugs
4. Reduced engine performance

Why Choose Our Product?

1. 100% Brand New & Tested – Strict quality control ensures reliability.
2. Easy Installation – Designed for hassle-free replacement by mechanics or experienced DIYers.
3. Fast Shipping – Ready for immediate dispatch to minimize downtime.

Package Includes

 8x Exhaust Valve Oil Seal (Part No. 11340038720)