Ultimate Guide to Porsche GT2 Turbocharger Part Numbers

When maintaining or upgrading a Porsche 911 GT2, the turbocharger is one of the most critical components. Whether you own a 997 GT2, GT2 RS, or a later 991 generation, knowing the correct turbocharger part numbers is essential for repairs, replacements, or performance upgrades. This guide covers the OEM part numbers for each generation, explains how to identify your turbos, and offers practical advice for sourcing replacements.

Understanding Porsche GT2 Turbocharger Generations

The Porsche GT2 lineage includes two main generations: the 997 (2007–2012) and the 991 (2013–2019). Each generation uses different turbocharger part numbers, and even within a generation, RS and non-RS models may have unique numbers. Knowing your exact model year and configuration is the first step to finding the correct part.

997 GT2 and GT2 RS (2007–2012)

The 997 GT2 uses a pair of BorgWarner K24 turbochargers. The standard GT2 (2007–2009) and the GT2 RS (2010–2012) share similar turbocharger assemblies but have different compressor and turbine specs. The OEM part numbers typically start with 997.110.xxx.xx or 997.111.xxx.xx.

Common OEM part numbers for 997 GT2 turbos:

• 997.110.906.00 (left side, standard GT2)
• 997.110.907.00 (right side, standard GT2)
• 997.111.906.00 (left side, GT2 RS)
• 997.111.907.00 (right side, GT2 RS)

These numbers correspond to the complete turbocharger assembly including the wastegate actuator. However, Porsche often supersedes part numbers, so always verify with a dealer or a reliable parts catalog using your VIN.

991 GT2 RS (2018–2019)

The 991 GT2 RS uses twin variable geometry turbochargers from BorgWarner. These are significantly different from the 997 units. The part numbers are longer and usually start with 9A1.110.xxx.xx or 9A2.110.xxx.xx.

Common OEM part numbers for 991 GT2 RS turbos:

• 9A1.110.906.00 (left)
• 9A1.110.907.00 (right)
• Updated supersessions exist; check 9A1.110.906.10 or 9A1.110.907.10 in later production runs.

Unlike the 997, the 991 GT2 RS turbos are closely integrated with the exhaust manifold, making replacements more involved. Part numbers for the complete assembly include the manifold and actuator.

How to Locate Your Turbocharger Part Number

If you have the turbocharger in hand, the part number is typically stamped on the compressor housing, turbine housing, or on a metal tag. On 997 units, look for a sticker or engraving near the actuator linkage. On 991 units, the number is often cast into the housing. If the turbo is installed, you can use the vehicle’s VIN with a Porsche parts database (such as PET) to find the exact part numbers for your car.

Aftermarket Turbocharger Options

For owners seeking more performance or a less expensive replacement, aftermarket turbochargers are available from brands like Tial, Garrett, and Precision. However, these units rarely use the same part numbering system. Instead, they are sold by model-specific kits or upgrades. For example, a common upgrade for the 997 GT2 is the Tial 605 or 770 series, which require different part numbers for the compressor wheel, turbine housing, and center cartridge.

When buying aftermarket, always cross-reference the OEM part number to ensure compatibility. Many vendors provide lookup tables that map OEM numbers to their aftermarket equivalents.

Practical Tips for Buying Turbochargers

1. Verify your exact model and year. A 2008 GT2 uses different turbos than a 2011 GT2 RS.
2. Use the Porsche PET catalog or a trusted online parts source (such as Suncoast Porsche or Pelican Parts) to confirm part numbers.
3. Check for supersessions. Porsche frequently updates part numbers. The new number may have a different suffix but will be functionally identical.
4. Consider rebuild vs. new. If your current turbos have a failed bearing or seal, a rebuild kit (with part numbers like 997.110.907.00 for the core) may be more cost-effective than a full replacement.
5. Beware of counterfeit parts. Stick to authorized dealers or reputable aftermarket manufacturers.
6. For 991 GT2 RS, the turbochargers are VTG (variable geometry). Non-VTG aftermarket replacements may require ECU tuning to avoid fault codes.

Common Questions About GT2 Turbo Part Numbers

Are GT2 and GT3 turbo part numbers the same?

No. The GT3 (normally aspirated) does not use turbochargers. Never mix part numbers between naturally aspirated and turbo models.

Can I use GT2 RS turbos on a standard GT2?

Physically possible, but the RS turbos have larger compressor wheels and different tuning. It requires corresponding ECU tuning and supporting modifications. Part numbers differ, so direct bolt-on is not guaranteed.

Where do I find the part number without removing the turbo?

For 997 models, look under the engine cover near the rear bumper—you may see a label on the intake duct. For 991 models, accessing the part number is difficult without removal; use the VIN instead.

Final Recommendation

Start by identifying whether you own a 997 or 991 GT2. Write down your VIN and use an online Porsche parts fiche to look up turbocharger part numbers specific to your car. If you need a replacement, order the latest superseded OEM number from a Porsche dealer or a trusted specialist. For performance upgrades, match aftermarket specifications to your OEM part number to ensure fitment. When in doubt, consult a Porsche shop that has experience with GT2 turbos—they can cross-reference numbers and recommend the best option for your driving needs.

By using the correct part numbers, you avoid costly mistakes and keep your GT2 performing at its peak. Whether you are rebuilding, replacing, or upgrading, the right part number is the foundation of a successful turbocharger job.