Driveshaft Flange Long for PDK Gearbox. Porsche 991 GT3 / 992 GT3 › 9P1311112A

Driveshaft Flange - Long 

Maintain a secure drivetrain connection with this replacement long driveshaft flange for selected PDK transmission assemblies.

Fits:

• Porsche 991.2 Speedster 4.0L (510Bhp) 2019
• Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
• Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
• Porsche 992.1 GT3 RS 4.0L 2022-24

Diagram Ref No 14 

Fitted at the gearbox differential output, the flange connects the transmission to the rear driveshaft, allowing engine power to reach the driven wheels.

Designed for the relevant GT3 gearbox configuration, it provides a replacement for damaged or worn original flanges during drivetrain repairs.

What Does It Do?

The driveshaft flange transfers rotational power from the gearbox differential to the rear driveshaft.

It provides a secure mounting point for the inner driveshaft joint, maintaining the correct connection during acceleration, deceleration and gear changes.

Why Is It Important?

A correctly fitted flange ensures reliable power transfer through the drivetrain.

A damaged flange may cause:

• Knocking or clunking during acceleration
• Excessive drivetrain vibration
• Movement around the driveshaft connection
• Wear to adjoining transmission components

Why Do Driveshaft Flanges Fail?

Common causes include:

• Worn or damaged splines
• Repeated high-torque loading
• Loose or damaged mounting bolts
• Corrosion around mating surfaces
• Damage during gearbox servicing

When Should It Be Replaced?

Replace the flange if it is cracked, distorted or shows excessive wear around the splines or mounting points.

It should also be inspected during driveshaft replacement, gearbox rebuilding or investigation of drivetrain vibration.

Installation Notes

Confirm the correct long flange specification before installation.

Inspect the gearbox output seals, retaining components and driveshaft joint. Fit using Porsche's specified installation procedures and tightening settings.

Key Features

• Replacement long driveshaft flange
• For selected Porsche 991 GT3 and 992.1 GT3 models
• Suitable for applicable GT3 manual gearbox configurations
• Connects gearbox differential to rear driveshaft
• Maintains secure drivetrain power transfer
• Replaces worn or damaged transmission output flanges
• Suitable for gearbox and driveshaft repairs

Driveshaft Flanges and Gearbox Components

The Porsche 991 GT3 and 992.1 GT3 transmission assemblies use driveshaft flanges to connect the gearbox differential to the rear wheels. These components must withstand considerable torque while maintaining a secure mechanical connection.

The long driveshaft flange  provides a replacement for compatible GT3 gearbox configurations, helping restore correct driveshaft mounting during transmission servicing or drivetrain repairs.

Related reference numbers
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9P1311112A

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