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- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
- Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21
- Porsche 95B.2 Macan S Petrol 3.0L V6 (354Bhp) 2019-21
- Porsche 95B.2 Macan GTS Petrol 2.9L V6 (380Bhp) 2019-21
- Porsche 95B.2 Macan Turbo 2.9L V6 (440Bhp) 2019-21
Fits:
Porsche 95B Macan 2014-18
Porsche Macan II 2019>>
For cars with (1BA) Suspension/dampers, Standard
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
8K0412137A
The product you are viewing cross references to these numbers
- 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
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
This OE Match front shock absorber additional spring is a replacement suspension bump stop / auxiliary spring component for Porsche 997.1 and 997.2 models. It is designed to match the original-style fitment and function, helping support the front shock absorber assembly and protect suspension travel.
Sold individually, 2 required - fits left or right suspension strut
Fits:
Cars with standard chassis (Option code: I029) & PASM (Option code: I475)
Porsche 997.1 C2 / C2S 2005 - 2008
Porsche 997.1 C4 / C4S 2005 - 2008
Porsche 997.2 C2 / C2S 2009 - 2012
Porsche 997.2 C4 / C4S 2009 - 2012
Porsche 997.1 Turbo 2007 - 2009
Porsche 997.2 Turbo 2010 - 2013
Diagram ref no 9
The shock absorber additional spring works with the front suspension strut assembly to help support suspension travel and damping control. It assists the shock absorber during compression and helps protect suspension components from excessive movement or harsh bottoming under load.
Functions
• Replaces the front shock absorber additional spring
• Fits left or right front shock absorber assembly
• Helps support suspension compression control
• Assists the shock absorber during suspension travel
• Helps reduce harsh bottoming and impact loads
• Replaces worn, split, compressed, damaged, or missing original springs
• OE Match replacement for Porsche 997 front suspension repair.
Why Replace This Part?
Shock absorber additional springs can wear, compress, split, deteriorate, or become damaged due to age, road impact, suspension load, heat, and moisture. A worn or missing additional spring can reduce suspension control, cause harsh ride quality, increase noise over bumps, or place extra stress on related suspension components. Replacing it helps restore correct front suspension function and ride control.
When to Replace This Part
• The front shock absorbers are being replaced or serviced
• The additional spring is worn, split, compressed, damaged, or missing
• Front suspension knocks, harshness, or bottoming is present
• Suspension travel feels poorly controlled
• Strut top mounts, bump stops, or related components are being renewed
• The front suspension assembly has been removed
• Preventative replacement is being carried out during suspension overhaul.
Where it fits on the car
This additional spring fits on the front shock absorber / strut assembly on Porsche 997.1 and 997.2 models. It can be used on the left or right front shock where part number 99634330102 is specified.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634330102
The product you are viewing cross references to these numbers
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
Front suspension strut bearing (upper damper mount bearing) for Porsche 911 (996 and 997 models) all-wheel drive (4WD) variants. This bearing enables smooth rotation and proper articulation of the front suspension strut assembly, reducing friction and maintaining correct alignment under load. Built to replicate the original equipment’s tolerances, materials and mounting geometry.
Sold each, fits left or right suspension strut
Fits:
Porsche 996 C4 / C4S 1998 - 2005
Porsche 996 Turbo 2001 - 2005
Porsche 997.1 C4 / C4S 2007- 2008
Porsche 997.1 Turbo 2007 - 2009
Porsche 997.2 C4 / C4S 2009 - 2012
Porsche 997.2 Turbo 2010 - 2013
Diagram ref no 11
• Position on Vehicle: Mounted at the top of the front suspension strut/damper assembly, under the front sub-frame, where it supports angular movement and load transfer through the bearing above the strut.
• Cross-Reference / Alternative Numbers: OEM number: 996 343 501 00 (sometimes shown as 99634350100)
• Applications: Replacement when the original front strut bearing shows signs of wear such as noise, binding, or play - restoring correct suspension articulation, reducing noise and preserving handling response.
The front strut top bearing is a key element in the suspension system - linking the strut to the chassis and allowing smooth turning and suspension travel. When the bearing becomes worn, loose or corroded, you may experience clunks, steering noise, compromised alignment or uneven tyre wear. Replacing it with a high-quality OE-Match unit restores silent, precise suspension behaviour and maintains the sophisticated ride and handling that Porsche drivers expect.
When and why to replace:
• Noticeable noise (clunking, groaning) when steering or traversing bumps through the front suspension.
• Excessive play or roughness at the top of the strut when the bonnet is open or during suspension movement.
• Uneven tyre wear or alignment issues traceable to front suspension bearing play.
• After front-end suspension work or damper/strut replacement - when access is available.
• High-mileage vehicle or original bearing installed long ago and potentially at end-of-life.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634350100
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- 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 Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Shock Absorber Groove Ball Bearing
Sold each - 2 required per car
Restore smooth and precise suspension operation with this OE
Match Shock Absorber Groove Ball Bearing. The groove ball bearing forms part of the shock absorber and
strut mounting assembly, allowing suspension components to move and rotate
smoothly while supporting the loads transmitted through the suspension.
Fits:
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- 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 Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Diagram ref no 11
As these bearings age, wear or contamination can lead to increased friction, noise and rough operation. Replacing worn bearings during suspension maintenance can help restore smooth movement and eliminate unwanted play or noises from the strut assembly.
What Does a Shock Absorber Groove Ball Bearing Do?
The groove ball bearing allows controlled, low-friction movement within the suspension and shock absorber mounting assembly.
On the front suspension, smooth bearing movement is particularly important as the strut assembly responds to both suspension travel and steering inputs.
A correctly functioning bearing helps provide:
- Smooth suspension movement
- Reduced friction within the strut assembly
- Consistent steering movement
- Correct operation of associated suspension components
- Reduced unwanted noise and resistance
Why Do Shock Absorber Bearings Fail?
Suspension bearings operate under continuous load and are exposed to vibration, impacts and changing road conditions. Over time, this can cause the bearing surfaces to deteriorate.
Common causes of failure include:
- Normal age and mileage
- Water and moisture contamination
- Dirt and road debris
- Corrosion
- Repeated suspension impacts
- Deterioration of bearing lubrication
- Wear from prolonged suspension movement
Once worn, the bearing may no longer rotate smoothly and can develop play, stiffness or noise.
When Should the Bearing Be Replaced?
Replacement should be considered if:
- Knocking or clicking noises are present
- Steering movement feels rough or notchy
- Creaking or grinding is heard from the suspension
- Excessive play is found in the bearing
- The bearing is seized or difficult to rotate
- Corrosion or physical damage is visible
- Shock absorbers or upper suspension mounts are being replaced
Because access often requires dismantling part of the strut assembly, replacing worn bearings while fitting new shock absorbers or suspension mounts can help avoid duplicated labour later.
Porsche 996 / 997 / Boxster 986 / 987 / Cayman 987C Suspension Bearings
Shock absorber bearings are an important but often overlooked part of the Porsche suspension system. While shock absorbers and springs control suspension movement, bearings and mounts allow the assembly to operate smoothly without excessive friction or unwanted movement.
Age, mileage and exposure to road conditions can gradually deteriorate these components. When carrying out a suspension overhaul on a Porsche 996, 997, Boxster 986, Boxster 987 or Cayman 987C, inspecting the associated bearings, top mounts, bump stops and protective components can help identify wear before the suspension is reassembled.
Replacing worn components together can restore a tighter, quieter and more precise suspension system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634351505
The product you are viewing cross references to these numbers
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
Protect the front shock absorber from dirt, moisture and road contamination with this OE Match Front Shock Absorber Strut Bellow. Designed for compatible Porsche applications, the strut bellow provides a flexible protective covering around the exposed section of the front shock absorber or strut assembly.
Fits:Porsche 996 C4 / C4S 1997 - 2005
Porsche 996 Turbo 1999 - 2005
Porsche 997.1 C4 / C4S 2005 - 2008
Porsche 997.2 C4 / C4S 2009 - 2012
Porsche 997.1 Turbo 2007 - 2009
Porsche 997.2 Turbo 2010 - 2013
Porsche 997 GT3 2010 - 2011
Diagram Ref No 5
Also commonly known as a shock absorber dust boot, strut boot or protective gaiter, the bellow helps shield the damper piston rod and sealing area from abrasive road debris. Keeping these surfaces clean is important because contamination can damage the piston rod surface or compromise the shock absorber seal over time.
The bellow repeatedly expands and contracts as the suspension moves. Combined with exposure to road dirt, water, temperature changes and age, this can eventually cause the material to harden, crack or split.
This OE Match Front Strut Bellow provides a high-quality replacement for a torn, deteriorated or missing original component, helping protect the shock absorber and support long-term suspension reliability.
What This Product Does:
- Covers the exposed shock absorber or strut piston rod.
- Helps prevent dirt and road debris reaching sensitive damper surfaces.
- Reduces exposure to water, grit and other contamination.
- Helps protect the shock absorber sealing area.
- Expands and contracts with normal suspension movement.
- Helps reduce abrasive damage to the piston rod.
- Supports the service life of the shock absorber.
- Provides protection without preventing normal suspension travel.
- Replaces a split, cracked, deteriorated or missing dust boot.
- Helps maintain a clean and properly protected suspension assembly.
- Provides an OE-style replacement for compatible Porsche applications.
Symptoms Of Wear Or Failure:
- Visible cracks in the bellow.
- Splits or tears in the material.
- Sections of the bellow breaking apart.
- Material that has become hard or brittle.
- The bellow no longer covering the piston rod correctly.
- The boot becoming detached from its intended position.
- Dirt or road debris accumulating on the exposed damper rod.
- Damage caused by contact with surrounding components.
- Significant deterioration discovered during suspension servicing.
- The original bellow is missing.
- Damage found while replacing the shock absorber, spring or top mount.
Why Replacement Matters:
- The polished piston rod of a shock absorber repeatedly passes through the damper seal as the suspension compresses and rebounds. Protecting this surface from abrasive contamination is therefore important.
- When a strut bellow splits or disappears completely, the piston rod becomes more exposed to road grit, dirt and moisture. Contamination can accumulate on the rod and may contribute to scoring, corrosion or deterioration of the sealing surface.
- Damage to the piston rod or seal can eventually result in shock absorber oil leakage and reduced damping performance. At that point, replacement of the complete damper may become necessary.
- A replacement bellow is therefore a relatively simple component that can help protect a considerably more expensive shock absorber.
- On performance vehicles, maintaining dampers in good condition is particularly important because consistent damping contributes directly to tyre control, braking stability and predictable handling.
- Replacing a damaged component with this OE Match Front Shock Absorber Strut Bellow helps restore protection around the damper rod and reduce the risk of contamination-related shock absorber wear.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99634350901
The product you are viewing cross references to these numbers