GSC Power Division Exhaust Valve Guide – +0.001" Oversize Single (Nissan RB26DETT / SR20DET) – GSC3041.001-1
The GSC Power Division +0.001" Oversized Exhaust Valve Guide is engineered for Nissan’s legendary RB26DETT and SR20DET engines. Designed for heads that have been machined or require tighter tolerances, this guide ensures accurate valve stem alignment and long-term reliability in both OEM-style rebuilds and high-performance setups.
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 boost, GSC3041.001-1 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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