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GSC Power-Division Porsche GT3 Cup 996/997 Intake/Exhaust Valve Guide, +.001in OD - Single

$6.45 $6.71
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GSC Power-Division Porsche GT3 Cup 996/997 Intake/Exhaust Valve Guide, +.001in OD - Single
$6.45 $6.71
$6.45 $6.71

Fits 1999-2013 Porsche 911 GT3 Cup models (996 and 997 generations).

This GSC Power-Division valve guide is engineered to meet the high-revving demands of Porsche GT3 Cup engines. Compatible with both intake and exhaust ports, this standard-style guide features a +.001" oversize outside diameter (OD). This slight oversize is critical for maintaining a proper interference fit in cylinder heads where the original guide bores have been slightly enlarged or worn during service.

  • Universal application for intake or exhaust ports on 996/997 GT3 Cup heads
  • +.001" oversize OD ensures a secure fit in worn or oversized guide bores
  • Standard style design for factory-like installation and performance
  • Precision machined for consistent valve stem alignment and heat transfer
  • Sold as a single unit
  • Manufacturer Part Number: 3997.001-1

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