Porsche 996,997 Rear Anti Roll Bar Bush (Inner) - 1998-08 (18.7mm Diameter Roll Bar)

Replacement rear inner anti-roll bar bush for selected Porsche Boxster, Cayman and 911 models fitted with an 18.7mm rear anti-roll bar. This bush mounts the rear anti-roll bar to the chassis and helps control suspension movement while reducing noise and vibration.

The anti-roll bar system reduces body roll during cornering by transferring load between the left and right suspension. The mounting bushes allow the anti-roll bar to pivot smoothly while holding it securely in position. Over time, the original rubber bushes can harden, crack or wear, causing suspension knocks, vague handling, uneven cornering response or excessive movement in the anti-roll bar assembly.

Replacing worn anti-roll bar bushes helps restore chassis stability, steering response and suspension precision while reducing unwanted suspension noise. Ideal for suspension refreshes, handling improvements or routine maintenance on higher mileage vehicles.

This bush is designed for the rear inner mounting position and fits anti-roll bars measuring 18.7mm diameter. Always check the original anti-roll bar diameter before ordering, as different suspension options and chassis packages may use different sizes.

Sold individually. Two required per vehicle.

Specifications:
• Rear inner anti-roll bar bush
• Fits 18.7mm anti-roll bar
• Rear axle fitment
• OE style rubber suspension bush
• Sold individually
• 2 required per vehicle

Replaces Porsche Part Number:
• 99633379224

Applications:

Porsche Boxster (986)
• 1997-2004 – 2.5 & 2.7 with standard suspension
• 2000-2004 – Boxster S 3.2 with Tiptronic transmission

Porsche Boxster (987)
• 2009-2012 – Models with PDK transmission (I250)

Porsche Cayman (987C)
• 2006-2008 – 2.7
• 2009-2012 – 2.9 manual models
• 2009-2012 – 2.9 & 3.4 models with PDK and selected chassis options

Porsche 911 (996)
• 1998-2005 – Selected Carrera models
• Check original anti-roll bar diameter before ordering

Porsche 911 (997)
• 2005-2012 – Selected Carrera, Carrera S, Carrera 4 and Carrera 4S models
• Including selected PASM, sport chassis and Tiptronic equipped vehicles