Flywheel ring gear – hardened steel
Porsche 964RS / 993RS / 996GT3

Hardened flywheel ring gear for Porsche RS and single-mass flywheels. Precision-machined from heat-treated steel, suitable for various 964, 993 and GT3/GT2 applications.

Details at a glance

• High-strength gear ring made of hardened steel
• OEM reference: 964.114.143.31
• For single-mass and RS flywheels
• Precision-machined starter pinion groove
• Not suitable for dual-mass flywheels

Description

This hardened steel flywheel ring gear is pressed or shrunk onto the outer diameter of a single-mass flywheel. It establishes the direct connection between the starter pinion and the flywheel: The starter pinion engages with the precision-machined teeth to crank the engine safely and reliably.

The toothed ring conforms to OEM specification 964.114.143.31 and is designed for RS, lightweight, and single-mass flywheels, as used in certain Porsche 964, 993, and GT3/GT2 models. The heat-treated steel construction offers maximum wear resistance and durability.

Technical data

• Material: hardened, heat-treated steel
• OEM part number: 964.114.143.31
• Installation location: Outer diameter of the single-mass flywheel
• Construction: precision-manufactured starter pinion teeth
• Compatibility: single-mass flywheel only (not for dual-mass flywheels)

Compatibility / Vehicle Assignment

• Porsche 964 RS 3.6 – 1991 to 1993
• Porsche 964 RS 3.8 – 1991 to 1993
• Porsche 993 RS – 1994 to 1997
• Porsche 996 GT3 MKI – 1999 to 2002
• Porsche 996 GT3 MKII – from 2003
• Porsche 996 GT3 RS – 2003 to 2004
• Porsche 997 GT3 MK1 – 2007 to 2009

Scope of delivery

• 1× Flywheel ring gear (hardened steel, OEM 964.114.143.31)

Notice

Suitable for single-mass flywheels only. Not compatible with dual-mass flywheels.