GSC Viton Valve Stem Seal Set – Nissan/Infiniti VR30DDTT 5.5mm (GSC1056)
Upgrade your VR30DDTT’s valvetrain with the GSC Power Division Viton Valve Stem Seal Set (PN GSC1056), designed specifically for 5.5mm valve stems. These seals offer a significant improvement over OEM materials, delivering to handle the elevated temperatures found in high-performance turbocharged applications.
- Nissan/Infiniti VR30DDTT
- 5.5mm
- Material: Viton – built to withstand extreme heat and reduce oil leakage
- Ideal for boosted builds and aggressive driving conditions
- Quantity: Complete set of 24 seals
Whether you're tuning for the street or pushing limits at the track, these deliver the reliability and thermal stability your VR30DDTT engine demands.
Fitment:
- 2016 - 2024 Infiniti Q50 3.0L Twin Turbo V6 DOHC (VR30DDTT)
- 2017 - 2024 Infiniti Q60 3.0L Twin Turbo V6 DOHC (VR30DDTT)
- 2023 - 2024 Nissan Z (RZ34) 3.0L Twin Turbo V6 DOHC (VR30DDTT)
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

