Driveshaft Flange Short for Manual Gearbox. Porsche 991.2 GT3 / 992 GT3 › 9P1311112

Driveshaft Flange - Short

Renew a worn or damaged transmission output connection with this OE Match short driveshaft flange for selected Porsche 992.1 manual gearboxes.

Fits:
Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19 – Gearbox type CG195 built from 27.09.2018
Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24 – Gearbox type CBG.91

Diagram Ref No 12 

Restore a secure drivetrain connection with this replacement short driveshaft flange for selected Porsche 991.2 and 992.1 GT3 models.

Located at the gearbox differential output, the flange connects the transmission to the rear driveshaft, transferring engine power to the driven wheels.

Designed for compatible GT3 transmission assemblies, it provides a replacement for worn or damaged original components.

What Does It Do?

The driveshaft flange provides the mechanical connection between the gearbox differential and the inner driveshaft joint.

It transfers rotational power to the rear wheel while maintaining secure positioning of the driveshaft during acceleration and gear changes.

Why Is It Important?

A correctly fitted flange helps maintain reliable power transfer and prevents unnecessary drivetrain movement.

A damaged flange may cause:

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

Why Do Driveshaft Flanges Fail?

Common causes include:

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

When Should It Be Replaced?

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

It should also be inspected during driveshaft replacement, gearbox refurbishment or differential repairs.

Installation Notes

Confirm the correct short flange specification before installation.

Inspect the gearbox output seal, retaining ring, splines and driveshaft joint. Follow Porsche's specified fitting and tightening procedures.

Key Features

• Replacement short driveshaft flange
• For selected Porsche 991.2 and 992.1 GT3 models
• Compatible with specified manual gearbox assemblies
• Connects gearbox differential to rear driveshaft
• Helps maintain secure drivetrain power transfer
• Replaces worn or damaged transmission output flanges
• Suitable for gearbox and driveshaft repairs

Manual Gearbox Driveshaft Flanges

The Porsche 991.2 and 992.1 GT3 drivetrain assemblies use differential output flanges to connect the gearbox to the rear driveshafts. These components provide a secure connection capable of handling the mechanical loads generated during performance driving.

This short driveshaft flange is listed for selected Porsche GT3 transmission assemblies, including the 992.1 GT3 CBG.91 gearbox. Replacing damaged flanges helps restore correct driveshaft mounting and reliable drivetrain operation.

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9P1311112

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