Suspension rebuild kit using standard shore bushes. Porsche 911 turbo 1989 G50 › SUSPBUSHKIT

Rear Stabiliser Bar Bush - 20.9mm
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Maintain precise rear suspension control with this OE Match 20.9mm stabiliser bar bush for Porsche 996 and 997 models.

Fits:

• Porsche 996 C2 3.4L 1997-08/01
• Porsche 996 C4 3.4L 1997-08/01
• Porsche 996 C2 3.6L 09/01-2005
• Porsche 996 C4 3.6L 09/01-2005
• Porsche 996 C4S 3.6L 09/01-2005
• Porsche 996 GT2 2001-05
• Porsche 997 MK1 Carrera 2 3.6L 2005-08
• Porsche 997 MK1 Carrera 2S 3.8L 2005-08
• Porsche 997 MK1 Carrera 4 3.6L 2005-08
• Porsche 997 MK1 Carrera 4S 3.8L 2005-08

The bush secures the rear anti-roll bar to its mounting bracket, allowing the bar to operate correctly while absorbing vibration and reducing unwanted movement.

An aftermarket replacement for deteriorated original bushes, helping restore suspension refinement and reduce unwanted rattles.

What Does It Do?

The stabiliser bar bush supports the rear anti-roll bar while allowing it to twist as the suspension moves.

The anti-roll bar reduces excessive body roll when cornering, helping maintain stable handling and balanced suspension movement.

The bush also cushions the mounting point, reducing vibration transmitted through the chassis.

Why Is It Important?

Worn bushes can allow the anti-roll bar to move within its mounting brackets.

Common symptoms include:

• Knocking noises over uneven roads
• Squeaking from the rear suspension
• Excessive anti-roll bar movement
• Less precise suspension response

Other suspension components can cause similar symptoms and should also be inspected.

Why Do Stabiliser Bar Bushes Fail?

Repeated suspension movement and environmental exposure gradually affect the rubber.

Common causes include:

• Rubber hardening or cracking with age
• Compression and loss of flexibility
• Wear from anti-roll bar movement
• Exposure to oil, moisture and road salt

When Should It Be Replaced?

Replace the bush if it is cracked, distorted, excessively worn or no longer grips the anti-roll bar securely.

Both rear bushes should be inspected together, particularly when investigating suspension noises or replacing stabiliser links.

Installation Notes

Measure the rear anti-roll bar to confirm the correct 20.9mm bush size.

Clean the mounting surfaces and inspect the bar for corrosion or damage. Fit the replacement bush correctly and tighten the retaining bracket to Porsche specifications.

Key Features

• OE Match aftermarket replacement bush
• 20.9mm internal diameter
• Supports correct rear anti-roll bar positioning
• Helps reduce vibration and suspension noise
• Replaces worn or damaged rubber bushes
• Alternative to a Genuine Porsche replacement

Rear Anti-Roll Bar Bushes

The Porsche 996 and 997 rear suspension systems use rubber stabiliser bar bushes to secure the anti-roll bar and control movement during cornering.

The OE Match 20.9mm rear stabiliser bar bush provides an aftermarket replacement for compatible Porsche 996 Carrera, GT2 and 997.1 Carrera models. Renewing worn bushes helps maintain correct suspension operation and reduce unwanted rear-end knocking or rattling.

Sold as a pair 

OEM Part Number: 99634379212

Note: Please check anti roll bar diameter before ordering.

Fits:
Porsche 986 Boxster 2.5L 1997-99 *M030 FRONT
Porsche 986 Boxster 2.7L 2000>> *M030 FRONT
Porsche 986 Boxster S 3.2L 2000>> **I029 FRONT

Porsche 987 Boxster 2.7L 2005-08 TIPTRONIC **I029 FRONT

Porsche 996 Carrera 1998-05 C2 COUPE TIPTRONIC FRONT
Porsche 996 Carrera 1998-05 C2 COUPE *M030 FRONT
Porsche 996 Carrera 1998-05 CABRIO FRONT
Porsche 996 Carrera 1998-05 TARGA MANUAL FRONT
Porsche 996 Carrera 1998-05 C4 *M030 FRONT
Porsche 996 Carrera 2001-05 C4S FRONT
Porsche 996 Turbo 2001-05 Standard Chassis FRONT

Porsche 997 MKI Carrera 2005-08 C2 MANUAL **I029 FRONT
Porsche 997 MKI Carrera 2005-08 C4 WITH PASM FRONT
Porsche 997 MKI Carrera 2005-08 C4S WITH PASM FRONT
Porsche 997 MKI Carrera 2005-08 TARGA WITH PASM FRONT
Porsche 997 MKI Turbo 2008-09 FRONT

* M030 - Cars with Sport-type chassis
** I029 - Cars with Standard chassis

Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.

Powerflex. Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:

- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsive steering
- Longer service life of suspension components