1153 8658 574 Thermostat Oil Seal For BMW Engine Repair Kit OEM

1153 8658 574 Thermostat Oil Seal  For BMW Engine Repair Kit OEM 

1.Precision Dimensions

• Outer diameter: 89.2mm ±0.05mm

• Cross-section: 3.8mm

• Hardness: 75±5 Shore A

2.Key Advantages

• Genuine OEM Quality - Manufactured to BMW's original technical standards, ensuring exceptional durability and performance
• High-Temperature & Oil Resistance - Maintains perfect sealing even under extreme engine temperatures and oil exposure
•  Precision Fit - Exact dimensional design effectively prevents thermostat housing leakage
•  Long Service Life - Significantly reduces wear and extends engine cooling system lifespan 

3.Additional Technical Highlights

• Engineered with high-grade fluorosilicone compound for optimal chemical resistance
• ncorporates reinforced lip design for enhanced sealing pressure retention
• Tested to withstand continuous operation at 150°C+ and intermittent peaks to 200°C
• Meets BMW specification GS 94016 for cooling system seals

4.Typical Applications

• Thermostat Housing Seal Replacement - Critical leak-proof solution that eliminates coolant/oil seepage
• Engine Overhaul Kits - Commonly included in BMW timing chain or valve cover gasket repair sets
• Cooling System Maintenance - Ensures proper thermostat operation to maintain optimal engine temperature

5.Professional Installation Guidelines

• Surface Preparation - Thoroughly clean mating surfaces of residual sealant and contaminants
• Lubrication - Apply silicone-based lubricant for easier installation
• Torque Specifications - Strictly adhere to BMW OEM bolt torque standards to prevent seal deformation

6.Why Choose This Product?

•  Leak Prevention - Effectively avoids engine overheating or fluid contamination caused by seal failure
• Cost Efficiency - Maintains cooling system integrity to prevent expensive repairs

7.Vehicle Compatibility Chart

8.Important Notes

Precise compatibility requires:

•  VIN verification
• BMW ETK system check
• Consultation with authorized BMW dealers

Exclusions:

• Hybrid models (iPerformance series)
• Latest CLAR platform vehicles (G chassis codes)