ELRING 221.490 Nuts And Bolts

ELRING 221.490 Nuts And Bolts

The ELRING 221.490 Nuts And Bolts kit is a precision-engineered assembly designed for the secure fastening of cylinder heads on a wide range of automotive engines. This comprehensive set includes twelve high-strength bolts, each meticulously manufactured to meet stringent industry standards for durability and reliability.

Key Specifications

• Thread Size: M12
• Number of Bolts: 12
• Head Profile: Hexagonal exterior (external hex)
• Wrench Size: 14 mm

Design and Construction

The bolts feature a M12 metric thread, ensuring a robust engagement with the cylinder head and block. The external hexagonal head allows for easy torque application using standard 14 mm sockets or wrenches, providing a secure and efficient fastening process. Each bolt is forged from high-grade alloy steel, then heat-treated to achieve superior tensile strength and resistance to fatigue under cyclic loading conditions typical of internal combustion engines.

Compatibility

This kit is engineered to fit a broad spectrum of vehicle models, including but not limited to:

• Ford – Focus II, S‑Max (WA6), Kuga I, Mondeo IV (BA7)
• Renault – Dacia, various gasoline engines
• Volvo – S40 II, V70 I, 850/854 series, Focus 2
• Other manufacturers with matching M12 cylinder head bolt patterns

The universal fitment is achieved through the standard M12 thread and hex head dimensions, making this kit a versatile choice for mechanics and automotive enthusiasts working on multiple platforms.

Application and Installation

Installing the ELRING 221.490 Nuts And Bolts kit involves a systematic approach to ensure optimal torque distribution and head gasket integrity:

1. Preparation: Clean all mating surfaces and apply a compatible gasket sealant if required.
2. Alignment: Position the cylinder head onto the engine block, aligning all bolt holes precisely.
3. Initial Tightening: Hand-tighten all bolts to secure the head in place.
4. Torque Sequence: Follow a crisscross tightening pattern, gradually increasing torque to the specified value (consult manufacturer’s torque chart for exact figures).
5. Final Check: Verify uniform pressure across all bolts and inspect for any gaps or misalignments.

Performance Benefits

• Consistent Torque Distribution: The hexagonal head design allows for precise torque application, reducing the risk of uneven pressure that can compromise gasket sealing.
• High Load Capacity: M12 bolts provide a strong mechanical bond capable of withstanding the high combustion pressures found in modern engines.
• Durability: Heat-treated alloy steel construction resists corrosion and wear, extending the service life of the assembly.
• Ease of Maintenance: Standard 14 mm wrench compatibility simplifies routine inspections and replacements.

Quality Assurance

Each bolt in the ELRING 221.490 kit undergoes rigorous quality control checks, including dimensional verification, thread integrity testing, and material composition analysis. This meticulous process guarantees that every component meets or exceeds automotive industry standards for safety and performance.

Conclusion

The ELRING 221.490 Nuts And Bolts kit represents a blend of precision engineering, material excellence, and universal compatibility. Whether you are restoring a classic Ford Focus II or maintaining a modern Volvo V70, this bolt set delivers the reliability and performance required for optimal engine operation.