Elring 820.122 Engine Cylinder Head Bolt Set

Overview of Elring Engine Cylinder Head Bolt Set 820.122

The Elring Engine Cylinder Head Bolt Set 820.122 is designed specifically for Mercedes-Benz models including the 300D, 300SD, 300SDL, 300TD, 350SD, 350SDL, and S350. This set includes 26 bolts engineered to meet the precise specifications required for secure cylinder head installation.

• Includes 26 female star head bolts for secure fastening
• Thread sizes: M 10x1.5x80 and M 10x1.5x102 for varied applications
• Spanner size X - m 10 for proper torque application
• Compatible with multiple Mercedes-Benz diesel and petrol engines

Technical Details and Specifications

The Elring 820.122 cylinder head bolt set features a female star bolt head design, which allows for precise torque application and reduces the risk of bolt head damage during installation or removal. The set contains 26 bolts with two thread sizes: M 10x1.5x80 and M 10x1.5x102, accommodating different cylinder head fastening points. The spanner size required is X - m 10, ensuring compatibility with standard tools used in professional automotive repair shops. This bolt set is engineered to maintain the integrity of the cylinder head seal and withstand the thermal and mechanical stresses typical in Mercedes-Benz engines such as the 300D and S350.

Compatible Mercedes-Benz Models

This cylinder head bolt set is compatible with the following Mercedes-Benz models: 300D, 300SD, 300SDL, 300TD, 350SD, 350SDL, and S350. These models often require precise hardware to maintain engine performance and reliability, making the Elring 820.122 an appropriate choice for maintenance and repair.

Common Applications and Problem Resolution

• Replacement of worn or damaged cylinder head bolts during engine overhaul
• Resolving cylinder head gasket leaks caused by improper bolt torque or stretch
• Ensuring proper clamping force to prevent head warping or engine misfires
• Addressing bolt corrosion or fatigue in older Mercedes-Benz engines
• Maintaining engine compression and preventing coolant or oil leaks

Installation Notes and Tips

When installing the Elring 820.122 cylinder head bolt set, it is important to follow the manufacturer’s torque specifications and tightening sequence for the specific Mercedes-Benz model. Use a calibrated torque wrench compatible with the female star bolt head design and spanner size X - m 10. Replace all bolts in the set to ensure uniform clamping force and avoid engine damage. Clean bolt threads and cylinder head holes before installation to prevent cross-threading and ensure accurate torque readings.

Quality Assurance and Warranty

Elring is a recognized manufacturer of engine components, adhering to strict quality control standards. The 820.122 cylinder head bolt set is manufactured to meet OEM specifications for durability and performance. While specific warranty details may vary, Elring products typically come with a limited warranty against manufacturing defects. Using genuine Elring hardware helps maintain engine reliability and service life in Mercedes-Benz vehicles.