Anti Roll Bar Bushes

Stabilizer bar bush, Rear
Size: 18.7mm



Fits:
Porsche 986 Boxster 2.5L, 2.7L - Cars with standard suspension
Porsche 986S Boxster 3.2L 2003-04 - Please choose by size
Porsche 996 C2, C4, C4S 1998-05 - Please choose by size
Porsche 997 C2/C2S/C4/C4S 2005-08 - Please choose by size

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Diagram Ref No 2.

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99633379224

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Stabilizer bar bush, Front. 24mm
The original Porsche front anti-roll bar bush (99634379217) is designed to deliver the same quality, fit, and performance as when your car first left the factory. Installed on the front stabilizer (sway) bar, it cushions and secures the bar to the chassis, allowing controlled movement that reduces body roll, vibration, and noise.

Fits:
Porsche 986 Boxster S 3.2L 2000>>
* Cars with Sport-type chassis

Porsche 987.1 Boxster 2005 - 2008
* Cars with standard chassis and Manual Transmission

Porsche 987.1 Boxster / S 2005 - 2008
* Cars with PASM (electronic damper control)

Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2005 - 2008
Porsche 987C.2 Cayman 2009 - 2012

Porsche 996 TARGA 2002>>
* Cars with Sport-type Chassis (M030) and Tiptronic Transmission (M249)

Porsche 997.1 C2 CABRIO / COUPE 2005 - 2008
* Cars with Standard Chassis (I029) and 6-speed manual transmission (I480)

Porsche 997.1 C2S COUPE 2005 - 2008
* Cars with Sport-type Chassis (I030)
Porsche 997.1 C2/C2S COUPE / CABRIO 2005 - 2008
* Cars with PASM (electronic damper control) (I475)

Porsche 997.2 C2 COUPE / CABRIO 2009 - 2012
* Cars with Standard Chassis (I029) and PDK Transmission (I250)

Porsche 997.2 C2/C2S COUPE 2009 - 2012
* Cars with Sport-Type Chassis (I030)

Porsche 997.2 C2/C2S COUPE/CABRIO 2009 - 2012
* Cars with PASM (electronic damper control) (I475)

Diagram Ref No 2.

Over time, worn or cracked bushes can cause excess play, squeaks, and reduced handling precision. Replacing with this genuine Porsche part restores factory ride comfort, stability, and cornering performance, ensuring your Porsche drives exactly as intended.

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99634379217

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Stabilizer Bar Bush Front.



OEM Part Number: 997 343 701 08 PASM Bar

OEM Part Number: 996 343 792 17 Bush

Size: 25mm

Fits:
Porsche 986 Boxster S 3.2L 2000>> Cars with Sport-type chassis
Porsche 987.1 Boxster 2005-08 Cars with standard chassis and Manual Transmission
Porsche 987.1 Boxster / S 2005-08 Cars with PASM (electronic damper control)
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2005-08
Porsche 987C.2 Cayman 2009-12
Porsche 996 TARGA 2002>> Cars with Sport-type Chassis (M030) and Tiptronic Transmission (M249)
Porsche 997.1 C2 CABRIO / COUPE 2005-08 Cars with Standard Chassis (I029) and 6-speed manual transmission (I480)
Porsche 997.1 C2S COUPE 2005-08 Cars with Sport-type Chassis (I030)
Porsche 997.1 C2/C2S COUPE / CABRIO 2005-08 Cars with PASM (electronic damper control) (I475)
Porsche 997.2 C2 COUPE / CABRIO 2009-12 Cars with Standard Chassis (I029) and PDK Transmission (I250)
Porsche 997.2 C2/C2S COUPE 2009-12 Cars with Sport-Type Chassis (I030)
Porsche 997.2 C2/C2S COUPE/CABRIO 2009-12 Cars with PASM (electronic damper control) (I475)

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Diagram Ref No 2.

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PFF57-501-25

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Powerflex Black Series Stabilizer Bar Bush Front.



OEM Part Number: 997 343 701 08 PASM Bar

OEM Part Number: 996 343 792 17 Bush

Size: 25mm

Fits:
Porsche 986 Boxster S 3.2L 2000>> Cars with Sport-type chassis
Porsche 987.1 Boxster 2005-08 Cars with standard chassis and Manual Transmission
Porsche 987.1 Boxster / S 2005-08 Cars with PASM (electronic damper control)
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2005-08
Porsche 987C.2 Cayman 2009-12
Porsche 996 TARGA 2002>> Cars with Sport-type Chassis (M030) and Tiptronic Transmission (M249)
Porsche 997.1 C2 CABRIO / COUPE 2005-08 Cars with Standard Chassis (I029) and 6-speed manual transmission (I480)
Porsche 997.1 C2S COUPE 2005-08 Cars with Sport-type Chassis (I030)
Porsche 997.1 C2/C2S COUPE / CABRIO 2005-08 Cars with PASM (electronic damper control) (I475)
Porsche 997.2 C2 COUPE / CABRIO 2009-12 Cars with Standard Chassis (I029) and PDK Transmission (I250)
Porsche 997.2 C2/C2S COUPE 2009-12 Cars with Sport-Type Chassis (I030)
Porsche 997.2 C2/C2S COUPE/CABRIO 2009-12 Cars with PASM (electronic damper control) (I475)

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Diagram Ref No 2.

Powerflex Black Series - Designed for the Track - Ready to Race - Engineered to be the best.

Powerflex Black Series bushes are manufactured using a 95 Shore A compound to provide maximum control of chassis geometry. This compound can be up to 80% more resistant to load than standard rubber and 25% stiffer than our purple performance material.

If your requirements are purely for the ultimate in handling and chassis performance then Powerflex Black Series are unique, offering the most precise and accurate alignment for your chassis.

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PFF57-501-25BLK

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Stabilizer Bar Bush Rear Price is each
Size: 19.2mm



Fits:
Porsche 986S Boxster 3.2L 1997-04 - Please choose by size
Porsche 987 Boxster - Cars with standard suspension
Porsche 987C Cayman

Diagram Ref No 2.

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99633379228

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Rear Stabilizer Bar Bush, Size: 19.8mm
Sold each

Fits:
Porsche 986 Boxster 2.5L / 2.7L / 3.2L 1997 - 2005  Cars with Sport Suspension - Please choose by size
Porsche 987.1 Boxster 2005 - 2008  Cars with Sport Suspension
Porsche 996 C2 / C4 / C4S 1998 - 2005  Cars with Sport Suspension - Please choose by size
Porsche 997.1 C2 / C2S / C4 / C4S 2005 - 2008 - Please choose by size

Diagram Ref No 2.

Rear stabilizer bar bush, Size: 19.8mm
It’s a suspension rubber mount that fits around the anti-roll bar to secure it to the rear axle and help control chassis movement.
Sold each.

Fits:
Porsche 986 Boxster 2.5L / 2.7L / 3.2L 1997 - 2005 Cars with Sport Suspension - Please choose by size
Porsche 987.1 Boxster 2005 - 2008 Cars with Sport Suspension
Porsche 996 C2 / C4 / C4S 1998 - 2005 *Cars with Sport Suspension - Please choose by size
Porsche 997.1 C2 / C2S / C4 / C4S 2005 - 2008 - Please choose by size

Diagram Ref No 2.

• Application: Rear anti-roll (stabilizer) bar bushing - fits around the 19.8 mm diameter stabilizer bar to mount it to the rear suspension subframe. Two bushings (left and right) are typically required per vehicle.

The anti-roll bar bushing cushions and secures the stabilizer bar to the rear suspension structure. This part helps maintain the correct position and movement control of the rear anti-roll bar, reducing unwanted body roll in corners and stabilizing the chassis during acceleration, braking, and steering.

Over time, the factory rubber in anti-roll bar bushings can harden, crack, or break down due to heat, age, and load cycles. Worn bushings can lead to:
• Increased body roll and reduced handling precision
• Clunking or knocking noises from the rear suspension
• Uneven tire wear
• Loose or sloppy cornering response

Replacing bushings restores correct fitment and suspension geometry, improving stability, road feel, and overall driving confidence. Spyder Performance

Replace the rear anti-roll bar bushings if you notice:
• Clunking or rattling from the rear suspension
• Excessive body lean when cornering
• Visible cracks, distortion, or missing rubber on existing bushings
• During suspension overhaul or anti-roll bar removal
• Elevated noise or vibration through the rear of the car

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99633379225

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Anti-roll bar bush, Front.
Also known as a stabiliser mounting or sway bar bush. The bushing secures the stabiliser to the chassis bracket and ensures optimal transfer of roll‐control forces during cornering, while maintaining isolation for a quiet, refined ride.
Sold each, 2 required per vehicle.

Fits:
Porsche 986 Boxster 1997-04 2.5L / 2.7L
* Cars with standard suspension

Porsche 996 C2 Coupe
* Fits only Manual cars with standard suspension

Diagram Ref No 2.

• Position on Vehicle: Front axle, stabiliser (anti‐roll) bar mounting – bush between bar and chassis bracket.

• Applications: Suitable when the original stabiliser bar bush is worn, cracked, flattened or causing noise and reduced rear/ front roll-control. Essential for restoring proper roll-bar function and chassis behaviour.

The stabiliser bar (sway bar) plays a key role in controlling body roll and ensuring lateral stability during cornering. If the bushings that mount it to the chassis are worn, they permit unwanted movement, causing clunks, loose feel, excessive body lean or uneven tyre wear. Replacing these bushings with correctly sized units ensures the roll-bar functions correctly and your suspension performs as intended.

When and why to replace:
• You hear a knocking or clunking sound when cornering, going over bumps or when driving over rough roads.
• The front suspension feels vague or exhibits more body roll than normal.
• Visual inspection shows cracks, flattening or deformation of the bush.
• As part of a front suspension refresh, alignment work or whenever you're renewing multiple components for improved handling.

Related reference numbers
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99634379214

The product you are viewing cross references to these numbers

Stabilizer bar bush, Front.
Sold each, 2 required per vehicle

Fits:
Porsche 986 Boxster 1997-04 2.5L / 2.7L
* Cars with standard suspension

Porsche 996 C2 Coupe
* Fits only Manual cars with standard suspension

Diagram Ref No 2.

Related reference numbers
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99634379214

The product you are viewing cross references to these numbers

Stabilizer bar bush, Front. 24mm
This replacement front stabilizer bar bush also called anti-roll bar bearing bracket mount, is built to match original specs. It fits the front anti-roll / stabilizer bar. Anti-roll bar bushing restores stability, reduces noise, and ensures precise handling.
Sold each, 2 required per vehicle.

Fits:
Porsche 986 Boxster S 3.2L 2000>>
* Cars with Sport-type chassis

Porsche 987.1 Boxster 2005 - 2008
* Cars with standard chassis and Manual Transmission

Porsche 987.1 Boxster / S 2005 - 2008
* Cars with PASM (electronic damper control)

Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2005 - 2008
Porsche 987C.2 Cayman 2009 - 2012

Porsche 996 TARGA 2002>>
* Cars with Sport-type Chassis (M030) and Tiptronic Transmission (M249)

Porsche 997.1 C2 CABRIO / COUPE 2005 - 2008
* Cars with Standard Chassis (I029) and 6-speed manual transmission (I480)

Porsche 997.1 C2S COUPE 2005 - 2008
* Cars with Sport-type Chassis (I030)
Porsche 997.1 C2/C2S COUPE / CABRIO 2005 - 2008
* Cars with PASM (electronic damper control) (I475)

Porsche 997.2 C2 COUPE / CABRIO 2009 - 2012
* Cars with Standard Chassis (I029) and PDK Transmission (I250)

Porsche 997.2 C2/C2S COUPE 2009 - 2012
* Cars with Sport-Type Chassis (I030)

Porsche 997.2 C2/C2S COUPE/CABRIO 2009 - 2012
* Cars with PASM (electronic damper control) (I475)

Diagram Ref No 2.

What stabilizer bar bush does:
• Cushions and secures the stabilizer (anti-roll) bar to the chassis, reducing vibration and road noise
• Helps maintain proper sway bar function by allowing the bar to pivot while minimizing unwanted movement
• Preserves handling precision and vehicle stability during cornering by preventing excessive body roll.

Over time, bushings can harden, crack, or deteriorate, which leads to play in the stabilizer bar mount, increased noise, sloppy handling, or even suspension misalignment. Replacing bushing restores correct stiffness, reduces unwanted vibration or sway, and helps preserve the original handling characteristics of the vehicle.

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99634379217

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Stabilizer bar bush, Front.
The Genuine Porsche 99134379208 stabilizer bar bush is the factory-specified rubber mounting used on the front anti-roll bar of Porsche 911 (991 series) and Boxster and Cayman (981 / 982) models. Designed to secure the stabilizer bar to the chassis, this bushing minimizes body roll, maintains precise suspension geometry, and ensures the characteristic Porsche steering feel and cornering stability.

Sold each. Bush marked with PINK dot.

Fits:
Porsche 991.1 C2 / C2S / C4 / C4S 2012 - 2016
* Cars without Sport Chassis (option code: -031)
* cars without Electronic damper control for PASM / PDDC (option code: -352)

Porsche 991.2 Carrera S 2017 - 2019
* Cars with Sport Chassis (option code: 030)

Porsche 991 Turbo / Turbo S 2014 - 2021
* Cars with PASM Electronic damper control (option code: 475)
* Cars with PDK Transmission - dual clutch (option code: 250)
* Cars with PTV plus, el. controlled rear-diff. lock (option code: 221)

Porsche 981 Boxster 2012 - 2016
Porsche 981C Cayman 2014 - 2016
*  Not for models with Code X73

Porsche 982 (718) Boxster GTS 4.0L 2017>>
Porsche 982C (718C) Cayman GTS 4.0 2017>>
* car with PASM Electronic damper control (option code: 475)
* cars with PASM w/o lowering (option code: 476)

Diagram ref no 2

• Position: Front stabilizer bar (anti-roll bar) – chassis-mounted bushing.
•  Function: Reduces body roll, stabilizes front axle movement, and helps maintain proper suspension balance.

Worn stabilizer bushes can cause:
• Clunking or knocking noises over bumps
• Increased body roll or vague steering response
• Misalignment of the stabilizer bar
• Uneven tyre wear or degraded road feel

Replacing with a Genuine Porsche bushing restores correct bar positioning, suspension tightness and the crisp handling expected from a 911 / 981 / 982.

Related reference numbers
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99134379208

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Stabilizer bar bush, Front



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


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Diagram Ref No 2.

Related reference numbers
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99634379212

The product you are viewing cross references to these numbers

Stabilizer bar bush, Front



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.

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99634379212

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Stabilizer Bar Bush Rear, 19.2mm.

The OE Match Rear Stabilizer Bar Bush is a 19.2mm replacement rubber mounting bush for the rear stabilizer bar, also known as the anti-roll bar, on selected Porsche Boxster and Cayman models.
Price Is Each.

Fits:

• Porsche Boxster S 986 3.2L 1999-02
• Porsche Boxster S 986 3.2L 2003-04
• Porsche Boxster 987 2.7L 2005-08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08

Diagram Ref No 2

Mounted between the rear anti-roll bar and its retaining brackets, the bush securely supports the stabilizer bar while still allowing the controlled rotational movement required as the suspension moves.

Over time, the original rubber bushes can harden, crack or develop excessive clearance around the stabilizer bar. Replacing worn bushes helps restore secure mounting, reduce suspension noise and improve the consistency of rear suspension response.

What This Product Does:
The rear stabilizer bar connects the suspension on the left and right sides of the vehicle and helps reduce body roll during cornering.

The stabilizer bar bushes hold the bar securely to the chassis while allowing it to twist as suspension loads change.

Their main functions include:

• Supporting the rear stabilizer bar
• Maintaining correct anti-roll bar positioning
• Allowing controlled rotational movement
• Helping reduce body roll during cornering
• Preventing excessive movement within the mounting brackets
• Isolating vibration and suspension noise
• Supporting predictable rear suspension behaviour
• Helping maintain consistent handling response

The bush itself does not increase the stiffness of the stabilizer bar. Instead, it ensures the bar is securely supported so it can operate as intended.

Symptoms Of Wear Or Failure:
Stabilizer bar bushes are continually subjected to suspension movement, road contamination, moisture and changes in temperature.

Common symptoms of worn rear anti-roll bar bushes include:

• Knocking or clunking from the rear suspension
• Rattling when driving over uneven roads
• Squeaking from the anti-roll bar mounting area
• Excessive movement of the stabilizer bar
• Visible cracking or splitting of the rubber
• Bush becoming hardened or distorted
• Enlarged or worn internal bore
• Reduced suspension precision
• Increased body movement during cornering
• Rear suspension feeling less controlled
• Stabilizer bar moving inside its mounting bracket
• Wear discovered during suspension inspection

Knocking noises can also be caused by worn drop links, control arms or other suspension components, so the complete rear suspension should be inspected.

Why Replacement Matters:
The stabilizer bar can only work effectively when it is securely mounted.

If the bushes become worn or compressed, the bar can move within its brackets before it begins transferring suspension load from one side of the vehicle to the other.

This unwanted movement can result in:

• Knocking and rattling noises
• Reduced anti-roll bar effectiveness
• Less precise handling
• Increased suspension movement
• Inconsistent cornering response
• Additional stress on related suspension components

Replacing worn bushes restores a tighter connection between the stabilizer bar and chassis, helping the anti-roll bar respond immediately as suspension loads change.

Fresh bushes can therefore improve both refinement and handling by reducing unwanted movement and restoring the original operating position of the stabilizer bar.

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99633379228

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