OS Giken NS112-CVR Release Sleeve Cover for Nissan 350Z/370Z VQ35HR VQ37HR

Vehicle Fitment

• 2006-2008 Nissan 350Z (Z33), VQ35HR 3.5L V6
• 2009-2020 Nissan 370Z (Z34), VQ37VHR 3.7L V6

Fitment Notes

• For use with the factory concentric slave cylinder (CSC) on VQ35HR/VQ37HR-equipped models
• Designed specifically to work with OS Giken push-type clutches - use with unintended applications may cause clutch component failure
• Not applicable to earlier VQ35DE-equipped 350Z models (2003-2005), which use a different clutch release setup

Features

• Push-style release bearing designed for use with OS Giken push-type clutches
• Special radius taper on the bearing face for increased modulation and control over clutch release
• Reduces overall clutch engagement/disengagement effort for a lighter clutch pedal feel
• Compatible with the OEM concentric slave cylinder - no aftermarket slave cylinder required
• Chemically heat-treated for strength and long service life

Specifications

• Component type: Release sleeve assembly / bearing cover
• Bearing style: Push-type, radius-tapered face
• Compatible slave cylinder: OEM concentric slave cylinder (CSC)
• Engine application: VQ35HR / VQ37HR

Included Components

• 1x OS Giken Release Sleeve Assembly Cover (NS112-CVR)

Product Description

The OS Giken NS112-CVR is a release sleeve assembly cover required for properly installing OS Giken push-type clutches on the 2006-2008 Nissan 350Z (VQ35HR) and 2009-2020 370Z (VQ37VHR). Because these models use a factory concentric slave cylinder rather than a traditional external slave cylinder setup, this cover bridges the gap needed for OS Giken's push-type clutch design to engage and disengage correctly.

The bearing features a special radius taper on its face, which increases modulation and control over clutch release compared to a standard flat-faced bearing. This translates to a lighter, more manageable clutch pedal effort even with a high-capacity performance clutch installed, and the component is chemically heat-treated for durability under repeated use.

This release sleeve is a required companion part for most OS Giken clutch kits built for the VQ35HR 350Z and VQ37HR 370Z - it's not a standalone upgrade, but rather an essential component for proper clutch function alongside the factory CSC. OS Giken notes that these release sleeves are engineered specifically for OS Giken clutches, and using them with other clutch brands or unintended setups may lead to premature clutch component failure.