GSC Power Division Exhaust Valve Guide +0.001" Oversize Single w/ Stopper (Nissan RB26DETT / SR20DET) GSC3129.001-1
The GSC Power Division +0.001" Oversized Exhaust Valve Guide is engineered for Nissan RB26DETT and SR20DET engines, featuring a stopper-style design for secure placement and enhanced valve stem stability. Perfect for cylinder heads that have been machined or require tighter tolerances, this guide ensures consistent alignment and long-term durability in both OEM rebuilds and high-performance builds.
Fitment & Options
- RB26DETT: Sold individually or in sets of 12
- SR20DET: Sold individually or in sets of 8
- Oversized Variants: Available in +0.001" and +0.003" for custom-fit head work
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 refreshing a stock head or building for serious performance, GSC3129.001-1 delivers the precision and reliability trusted by engine builders worldwide.
Fitment:
Nissan RB26DETT – 2.6L DOHC Inline-6 Turbo
- 1989–2002 Nissan Skyline GT-R (R32, R33, R34)
- 1990s–present RB26-swapped builds (240SX, Z32, Datsun, etc.)
Nissan SR20DET – 2.0L DOHC Inline-4 Turbo
- 1989–1994 Nissan Silvia S13
- 1995–1998 Nissan Silvia S14
- 1999–2002 Nissan Silvia S15
- 1991–1994 Nissan 180SX (Redtop/Blacktop)
- 1990s–present SR20DET-swapped builds (B13 Sentra, Datsun 510, AE86, etc.)
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