SKU: 3997-12
GSC P-D Porsche GT3 CUP 996/997 Manganese Bronze STD Style Intake/Exhaust Valve Guide - SET OF 12
Upgrade your Porsche 996/997 GT3 Cup engine with GSC Power-Division manganese bronze STD style intake and exhaust valve guides sold as a set of 12. These guides fit the high-revving 3.6L Mezger engine in GT3 Cup race cars providing reliable valve stem support during extreme track conditions. Precision engineering ensures minimal wear and consistent sealing for sustained power output.
Key Features
- Manganese Bronze Material: Delivers high wear resistance and superior heat dissipation to handle race engine demands without failure.
- STD Sizing: Matches exact OEM dimensions with 8.035mm ID 13.00mm OD and 47.5mm length for drop-in compatibility.
- Intake and Exhaust Design: Universal fit covers 12 valves per set supporting both banks in the flat-six configuration.
- Precision Machining: Tight tolerances reduce oil consumption and valve guide clearance for sharper throttle response.
- Race-Proven Durability: Built for GT3 Cup track abuse maintaining valve train integrity at 9000+ RPM.
Product Notes
- Sold as complete set of 12 guides for one full intake or exhaust valve job.
- Inspect valve stems for wear before installation to ensure optimal performance.
- Packaged in protective box measuring 6 x 4 x 1 inches for safe transit.
Installation Notes
- Professional installation recommended.
- Requires valve guide puller and driver tool for press-fit installation.
- Compatible with OEM valve seals and springs no modifications needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2000-2005 | Porsche | 911 | GT3 Cup (996) |
| 2006-2011 | Porsche | 911 | GT3 Cup (997) |
Why Choose GSC Power-Division?
- Trusted by Porsche racing teams for championship-winning engines.
- Manufactured with aerospace-grade materials and CNC processes.
- Backed by extensive dyno and track testing data.
Frequently Asked Questions
-
Q: Will these fit Porsche 997 GT3 street cars?
A: Designed specifically for GT3 Cup Mezger engines confirm your engine code matches 996/997 Cup specs. -
Q: What valve stem size do they support?
A: STD guides fit 8mm valve stems with 8.035mm ID precise clearance for stock or oversized valves. -
Q: What is the warranty coverage?
A: Limited lifetime warranty against manufacturing defects when installed by certified shop.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Secure small box 6 x 4 x 1 inches
- Weight: 0.35 lbs
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