GSC Power Division 3058-12 Bronze Intake Valve Guides for 01-12 Porsche 996/997

Vehicle Fitment

• 2001-2005 Porsche 996 Turbo (3.6L Twin-Turbo, AWD)
• 2006-2012 Porsche 997 Turbo / Turbo S (3.6L / 3.8L Twin-Turbo, AWD)

Fitment Notes

• Designed for Porsche Mezger flat-6 turbocharged engines only
• Intake valve guides only - exhaust guides sold separately
• Professional cylinder head machining and valve honing required
• Recommended for rebuilt or performance-built engines

Features

• High-strength manganese bronze construction for extreme durability
• Superior heat dissipation compared to OEM cast iron guides
• Improved valve stem lubrication under high boost conditions
• Precision CNC-machined for exact OEM replacement fitment
• Reduced valve stem wear in high-RPM turbo applications
• Enhanced oil control and reduced oil consumption
• Designed specifically for Porsche Mezger turbo heads
• Optimized for high-performance and track-driven engines

Specifications

• Part Number: 3058-12
• Brand: GSC Power Division
• Material: Manganese Bronze
• Type: Intake Valve Guide Set
• Quantity: 12 guides (complete cylinder head set)
• Engine Platform: Porsche 996/997 Turbo Mezger Flat-6
• Fuel System: Gasoline, Turbocharged
• Position: Intake (Cylinder Head)

Included Components

• 12x GSC Power Division Manganese Bronze Intake Valve Guides

Product Description

The GSC Power Division 3058-12 intake valve guide set is a precision-engineered valvetrain upgrade designed specifically for Porsche 996 and 997 Turbo engines. Built from high-quality manganese bronze, these guides offer significantly improved heat resistance and wear protection compared to factory components, making them ideal for high-boost and high-RPM applications.

This complete set of 12 intake valve guides is designed to service both cylinder heads on the Mezger flat-6 turbo engine. It is commonly used during full engine rebuilds or performance upgrades where long-term durability and consistent valve operation are critical under extreme conditions.

Perfect for street performance, track builds, and high-power turbo applications, these guides help reduce valve stem wear, improve lubrication stability, and ensure reliable operation in demanding environments. Professional installation and head machining are strongly recommended to achieve proper fitment and performance.