GSC Exhaust Valve Guide w/ Stopper 6mm +.001" (Honda K20 / K24) GSC3021.001-1

GSC Exhaust Valve Guide – Honda K20/K24 – 6mm +0.001" Oversize – Stopper Style – Single – GSC3021.001-1

Precision-fit oversize guide for high-performance Honda builds

This single +0.001" oversize 6mm exhaust valve guide from GSC Power Division is designed for Honda K20 and K24 engines. Featuring a stopper-style design, it ensures secure seating and smooth valve motion under high-RPM conditions. Ideal for rebuilds requiring tighter tolerances or custom-fit applications.

Specs – GSC3021.001-1 Oversize:

• Total Length: 1.795 in / 45.59 mm
• Outer Diameter: 0.4359 in / 11.07 mm
• Valve Stem Diameter: 6mm

Standard guides are available individually or in sets of 8. Oversize options (+0.001" and +0.003") are sold individually for precision tuning.

Fitment:

- 2002–2004 Acura RSX Type-S
- 2005–2006 Acura RSX Type-S
- 2006–2011 Honda Civic Si
- 2004–2008 Acura TSX
- 2007–2008 Honda Accord EX (Manual only)
- 2003–2005 Honda Accord (USDM)
- 2003–2005 Honda Element
- 2006–2007 Honda Accord (USDM)
- 2006–2011 Honda Element

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