- New



Avoid oil leaks and loss of sealing on your SADEV gearbox with this nitrile O-ring Ø41.2 x 3 mm, sold under reference 0201027C. This sealing component is intended for the Renault Clio 2 V6 Trophy and is suitable for the specific maintenance requirements of a competition transmission.
A worn, pinched or deformed O-ring can cause oil seepage and progressively compromise the transmission lubricant level. This nitrile O-ring is an essential component when carrying out a SADEV gearbox overhaul, dismantling operation or preventive maintenance on your sports vehicle.
On a Renault Clio 2 V6 Trophy equipped with a competition transmission, every sealing component contributes to maintaining the oil level required for correct gearbox operation. A damaged, hardened or deformed O-ring can allow oil seepage to develop and may result in a more extensive transmission intervention.
SADEV reference 0201027C corresponds to a Ø41.2 x 3 mm nitrile O-ring. This precise dimension should be respected during assembly to avoid problems associated with an unsuitable seal, including poor sealing, pinching during installation, lubricant leakage or premature dismantling of the gearbox.
Reference 0201027C — Ø41.2 x 3 mm nitrile O-ring for SADEV applications. A sealing component to inspect and replace when the relevant components are removed during servicing.
Reusing a transmission O-ring that has already been compressed can increase the risk of sealing problems after reassembly. Over time, the material may also lose some of its elasticity because of thermal cycling, transmission oils and mechanical stress.
Even a minor leak should not be ignored on a SADEV sequential gearbox. A progressive reduction in lubricant level can increase the operating stress placed on internal transmission components. For this reason, replacing sealing components during an overhaul or dismantling operation is a relevant part of preventive transmission maintenance.
This SADEV nitrile O-ring has a nominal diameter of 41.2 mm and a 3 mm cross-section. Nitrile, also known as NBR, is commonly used for sealing applications requiring resistance to oils and lubricants.
The application provided for this reference is as follows:
As 0201027C is a dimension-specific sealing component, we recommend checking the reference of the removed part and the dimensions of the housing before ordering, particularly if the vehicle has undergone transmission modifications or a gearbox replacement.
Several signs can justify checking transmission sealing: the appearance of an oil film, greasy marks around a sealing surface, an abnormal reduction in lubricant level or evidence of leakage following mechanical work.
The condition of the O-ring should also be checked during dismantling. A flattened, cut, cracked, hardened or deformed O-ring should not be reused. Its replacement during an overhaul is particularly sensible when compared with the additional work required to reopen a gearbox because of a sealing problem.
What are the dimensions of the 0201027C O-ring?
Reference 0201027C corresponds to a Ø41.2 x 3 mm nitrile O-ring.
Is this O-ring made from nitrile?
Yes. Reference 0201027C is identified as a nitrile O-ring with a 41.2 mm diameter and a 3 mm cross-section.
Which vehicle is this reference intended for?
This product page is dedicated to the Renault Clio 2 V6 Trophy equipped with its SADEV transmission, according to the application specified for this part.
Can the old O-ring be reused?
When an O-ring has been removed after being compressed in its housing, replacement is preferable in order to reduce the risk of a sealing problem during reassembly.
How can compatibility be checked before ordering?
Check the 0201027C reference, the Ø41.2 x 3 mm dimensions and the application of your SADEV gearbox. For a specific configuration, a technical inspection of the transmission can help avoid ordering the wrong reference.
During a SADEV gearbox overhaul, replacing sealing components should be considered whenever the relevant components are removed. This avoids closing a transmission with sealing elements that have already been marked or compressed by their previous installation.
For owners of a Renault Clio 2 V6 Trophy maintaining their vehicle for road use, track use or historic competition, this reference can therefore form part of a comprehensive preventive transmission maintenance programme.
Since 2010, Optimiz Access has supported owners of sports and premium vehicles in sourcing parts for maintenance, restoration and technical customisation. Our range covers brands and specialist applications including Renault Sport, Audi, Volkswagen, Porsche, Mercedes and BMW.
Based in the Hauts-de-France region, near Lille, Seclin, Douai, Valenciennes, Cambrai, Arras and Saint-Quentin, Optimiz Access also provides fitting and maintenance services for relevant vehicles. Parts can be shipped throughout France and internationally.
For a more comprehensive transmission overhaul, compatible sealing components, gearbox parts and other related items can be found at the bottom of the product page you are currently viewing. Check the reference and dimensions of each component before assembly.
The SADEV 0201027C Ø41.2 x 3 mm nitrile O-ring is a small but important sealing component within a competition transmission. During a SADEV gearbox overhaul, replacing an O-ring showing signs of wear or one that has already been compressed helps reduce the risk of leakage and avoids additional work caused by a sealing failure.
Note: The compatibility stated here concerns the Renault Clio 2 V6 Trophy equipped with a SADEV transmission. For another configuration or a modified gearbox, always check the reference, dimensions and O-ring housing before ordering.