GSC +1mm Exhaust Valve Set – Nissan TB48DE (Set of 12) – GSC2083-12
The GSC Power Division +1mm Exhaust Valve Set (PN GSC2083-12) is engineered for Nissan TB48DE engines pushing serious horsepower. With a larger 34.50mm head diameter and a robust 7mm stem, these valves are built to support high boost, elevated RPMs, and aggressive cam profiles while maintaining long-term reliability.
- Stem Diameter: 7mm
- Overall Length: 98.30mm
- Head Diameter: 34.50mm (+1mm oversize)
Using advanced 3D modeling and simulation tools, GSC developed a high-flow valve head profile specifically optimized for TB48DE applications. Flow testing confirms superior performance, while reduced face distortion ensures better sealing under extreme heat and pressure—delivering consistent results over the valve’s lifespan.
- Enhance exhaust flow for improved combustion and efficiency
- Reduces valve weight to support higher RPMs and boost levels
- Minimize oil retention and reduce drag for smoother valve movement
- Material: Modified 23-8n stainless steel for exhaust valves—built for high heat and durability
- Hardened or fused with stelite wafer for extended wear resistance
- Reduces tipping and simplifies valve lash setup
- Balances spring pressure to reduce shim use and maximize spring/retainer performance
- Compatibility: Fits OEM keepers/locks or GSC upgraded options (new locks recommended for performance builds)
Fitment:
- 2002 Nissan Patrol GR TB48DE
- 2003 Nissan Patrol GR TB48DE
- 2004 Nissan Patrol GR TB48DE
- 2005 Nissan Patrol GR TB48DE
- 2006 Nissan Patrol GR TB48DE
- 2007 Nissan Patrol GR TB48DE
- 2008 Nissan Patrol GR TB48DE
- 2009 Nissan Patrol GR TB48DE
- 2010 Nissan Patrol GR TB48DE
- 2011 Nissan Patrol GR TB48DE
- 2012 Nissan Patrol GR TB48DE
- 2013 Nissan Patrol GR TB48DE
- 2014 Nissan Patrol GR TB48DE
- 2015 Nissan Patrol GR TB48DE
- 2016 Nissan Patrol GR TB48DE
- 2017 Nissan Patrol GR TB48DE
- 2018 Nissan Patrol GR TB48DE
- 2019 Nissan Patrol GR TB48DE
- 2020 Nissan Patrol GR TB48DE
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