GSC Power Division Exhaust Valve Guide – +0.003" Oversize Single (Nissan RB26DETT / SR20DET) – GSC3041.003-1
The GSC Power Division +0.003" Oversized Exhaust Valve Guide is precision-engineered for Nissan’s RB26DETT and SR20DET engines. Designed for cylinder heads that have been machined or require a tighter fit, this guide ensures accurate valve stem support and long-term reliability in both OEM-style rebuilds and high-performance builds.
Fitment & Options
- RB26DETT: Compatible with sets of 12 or sold individually
- SR20DET: Compatible with sets of 8 or sold individually
- Oversized Variants: Available in +0.001" and +0.003" sizes for custom-fit applications
Specifications
- Total Length: 1.692 in / 42.98 mm
- Outer Diameter: 0.4342 in / 11.03 mm
- Valve Stem Diameter: 7 mm
Whether you're restoring a factory head or building for high boost, GSC3041.003-1 delivers the precision and durability trusted by engine builders worldwide.
Fitment:
Nissan RB26DETT – 2.6L Twin Turbo Inline-6
- 1989–2002 Nissan Skyline GT-R R32 / R33 / R34
- 1991–2002 Nissan Stagea RS260 (select models with RB26DETT)
- 1990s–2000s RB26DETT-swapped builds (240SX, Silvia, Laurel, etc.)
Nissan SR20DET – 2.0L Turbo Inline-4
- 1989–1994 Nissan Silvia S13
- 1995–1998 Nissan Silvia S14
- 1999–2002 Nissan Silvia S15
- 1991–1994 Nissan Pulsar GTI-R
- 1991–1998 Nissan 180SX
- 1990s–2000s SR20DET-swapped builds (B13 Sentra, NX2000, 240SX, etc.)
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