SADEV 5th Gear Threaded Insert F1903031 - Renault Clio 2 Gr N ST66 Gearbox

The Weak Link You Cannot Ignore: SADEV 5th Gear Threaded Insert F1903031

You invest in a SADEV ST66 sequential gearbox for its extreme reliability in competition. However, a simple component like the 5th Gear Threaded Insert (reference F1903031) can be the source of a mechanical catastrophe if you do not replace it during the maintenance of your Renault Clio 2 Gr N.

The Price of Keeping a Worn Insert: Losses and Risks

• ❌ Pinion Instability: A tired or loose insert can cause radial play on the 5th gear pinion, leading to premature wear of all adjacent elements (bearings, shafts).
• ❌ Forced Disassembly: You risk a critical loosening of the fixing, leading to an unforeseen dismantling and potentially the destruction of your SADEV ST66 gearbox during a rally or race.
• ❌ Equipment Loss: Without this new and perfectly adjusted insert, you cannot guarantee the optimal tightening torque of the insert nut F1903033 (see related products).

Original SADEV Part: Ensure the Cohesion of Your Sequential Gearbox

The Threaded Insert F1903031 is a vital fixing element, allowing the 5th gear pinion to be secured to the transmission shaft of your SADEV gearbox. This part is subjected to considerable torque and vibration constraints. Its SADEV Motorsport design guarantees **maximum resistance** and a precise fit with the pinion nut and the anti-rotation adjustment shim.

Key Searches: Insert for Clio 2 Gr N, ST66 Gearbox

This part is specifically adapted to vehicles equipped with the SADEV ST66 sequential gearbox. We guarantee compatibility for the Renault Sport platforms distributed by Optimiz Access, including:

• Renault Clio 2 Group N (Gr N)
• Renault Clio 2 X65 Cup
• Renault Clio 3 X85 Cup
• Renault Megane N4
• Twingo R2

Look no further for where to buy your SADEV F1903031 part; Optimiz Access, your specialized distributor in France and internationally, ensures you receive the original component.

Customer FAQ: Why replace an insert that looks intact?

Even without visible damage, the insert may have undergone stretching or thread fatigue after several tightening/loosening cycles and high stresses in competition. A damaged thread compromises the hold of the insert nut and can lead to dangerous play. It is essential to replace this element during a major overhaul of the 5th gear cluster to maintain the performance of your SADEV transmission.

Optimiz Access: Expertise and Services for Sports Vehicles

Since 2010, Optimiz Access has been the partner of sports and premium vehicle enthusiasts (Renault Sport, Audi, VW, etc.). In addition to the sale of quality parts, we offer fitting and maintenance services for these products at our workshops located in Hauts-de-France, near Lille, Cambrai, Valenciennes, and Arras. Benefit from our EEAT expertise for the assembly of your ST66 gearbox.

Complementary products for a complete assembly (notably the insert nut F1903033 and the anti-rotation adjustment shim) are available at the bottom of this product page.