: M8 nut, zinc-plated, class 8.8, SADEV / Renault Clio 2 CUP / ST75-14

SADEV M8 dichromate-plated nut (class 8.8) for Renault Clio 2 Cup sequential gearbox

This SADEV M8 dichromate-plated nut (class 8.8) is a brand-new component designed for the SADEV ST75-14 sequential gearbox used in Renault Clio 2 Cup cars. Engineered to withstand the rigors of motorsport, it ensures a reliable hold for mechanical assemblies subject to vibration, repetitive stress, and intensive operating conditions.

Purpose of the part

The M8 nut is used to secure and lock mechanical components within the SADEV sequential transmission system. Its purpose is to maintain consistent clamping force between parts, preventing any play, loosening, or shifting that could compromise the proper operation of the gearbox.

Symptoms or consequences of a worn or defective part

A damaged or oxidized nut—one with compromised threads or a loss of its original clamping integrity—can result in an insecure assembly. In a competition transmission, this may lead to abnormal vibrations, gradual loosening, premature wear of associated components, or a loss of reliability in the sequential gearbox.

Benefits of replacement

• Restores reliable, specification-compliant clamping for the SADEV ST75-14 gearbox.
• Preserves the safety and reliability of mechanical assemblies.
• Minimizes the risk of loosening caused by vibrations and high mechanical stress.
• Suitable for transmission maintenance, overhauling, or reassembly procedures.
• New part, designed for use in motorsport competition.

Specifications

• Brand: SADEV.
• Product: M8 dichromate-plated nut, class 8.8.
• Type: new product.
• Finish: Dichromate-plated for enhanced corrosion resistance.
• Strength class: 8.8.
• Application: SADEV ST75-14 sequential gearbox.
• SADEV part number: 0401002.
• Renault Sport part number: 77 03 032 063.

Vehicle compatibility

• Renault Clio 2 CUP equipped with a SADEV ST75-14 sequential gearbox.

Conclusion

Essential for the maintenance or reassembly of a sequential gearbox, this SADEV M8 class 8.8 dichromate-plated nut ensures a reliable assembly that meets the requirements of the Renault Clio 2 CUP for circuit use and competition.