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- 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

Bilstein Replacement for the Original Spec
Fits:
Porsche 997 C4 / C4S / Turbo - For vehicles with PASM, For vehicles with electronic suspension control
B4 High Quality direct replacement shock absorbers constructed and finished to Bilstein's high standards often far and above what the car was originally supplied with. They can actually be a performance improvement if replacing plain, none gas charged, oil filled dampers. They dramatically reduce cavitation / oil foaming, thus give for more stable damping forces when driven 'spiritedly'. Some surprising cars come with plain oil filled dampers.
Key Features:
- Twin Tube Damper
- Gas pressurized
- OE damping forces
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
BILSTEIN9974B4P
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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
Bilstein Replacement for the Original Spec
Fits:
Porsche 997 C4 / C4S / Turbo 2004-2012- Car with PASM electronic damper control (I475)
B4 High Quality direct replacement shock absorbers constructed and finished to Bilstein's high standards often far and above what the car was originally supplied with. They can actually be a performance improvement if replacing plain, none gas charged, oil filled dampers. They dramatically reduce cavitation / oil foaming, thus give for more stable damping forces when driven 'spiritedly'. Some surprising cars come with plain oil filled dampers.
Key Features:
- Twin Tube Damper
- Gas pressurized
- OE damping forces
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
22-147554
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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

Bilstein Replacement for the Original Spec
Fits:
Porsche 997.1 C4 / C4S / Turbo 2004-2008- Car with PASM electronic damper control (I475)
Porsche 997.2 C4 / C4S / Turbo 2009-2012- Car with PASM electronic damper control (I475)
B4 High Quality direct replacement shock absorbers constructed and finished to Bilstein's high standards often far and above what the car was originally supplied with. They can actually be a performance improvement if replacing plain, none gas charged, oil filled dampers. They dramatically reduce cavitation / oil foaming, thus give for more stable damping forces when driven 'spiritedly'. Some surprising cars come with plain oil filled dampers.
Key Features:
- Twin Tube Damper
- Gas pressurized
- OE damping forces
Please Note:
Price is for each damper you will need to buy 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
22-3478
The product you are viewing cross references to these numbers
Porsche Bilstein cars with PASM
At Design911, we supply Bilstein suspension specifically for Porsche models equipped with PASM (Porsche Active Suspension Management), helping you restore the car’s adaptive damping while keeping its character close to factory. Drawing on Bilstein’s long experience in OE and performance suspension, these applications are engineered to integrate with the PASM system so that comfort and sport modes continue to function as intended.
Why do Porsche cars with PASM matter?
On a PASM‑equipped Porsche, the dampers are central to how the different driving modes feel. Over time they can suffer from internal wear, oil leaks or electronic faults that leave the car riding inconsistently or triggering warnings. Replacing tired components with correctly matched Bilstein units helps preserve the intended balance between comfort and control, keeps the suspension electronics happy, and maintains the feeling of a well‑cared‑for Porsche.
- Keep your Porsche looking smart rather than tired or neglected
- Help protect nearby components from dirt, moisture and corrosion where relevant
- Reduce minor niggles such as mismatched, scuffed or visibly corroded hardware
- Support long-term enjoyment, pride of ownership and potential resale value
Common options & kits
Individual replacement parts Specific items to address a particular area or issue without changing everything at once.
- Ideal for targeted repairs
- Lets you replace only what is needed
- Helps keep initial costs under control
Matched sets or pairs Components supplied together so both sides or related items are renewed at the same time.
- Consistent feel and performance
- Helps avoid uneven wear or behaviour
- A sensible choice for routine maintenance
Complete kits Grouped parts designed to refresh a whole system or area in one go, useful for upgrades and restorations.
- Everything specified in a single package
- Saves time compared with sourcing parts individually
- Ideal when upgrading or restoring your Porsche
Brands available in this category
For this category we stock a wide choice of trusted brands for Porsche models. You can also browse and filter by brand on this page to focus on your preferred manufacturers.
When should you review or replace your Porsche Bilstein cars with PASM?
Checking Bilstein cars with PASM regularly helps you spot wear, damage or age-related deterioration before it affects comfort, refinement or leads to more expensive repairs later on.
- Existing parts are worn, cracked, scuffed, faded, corroded or missing
- You notice looseness, vibration or an untidy appearance around the area they sit in
- You have had related work carried out and want everything to look and feel consistent
- You want the car to feel smarter and better cared for in daily use or before resale
If any of these apply, it is a good time to review your Bilstein cars with PASM and replace anything that is past its best so your Porsche stays dependable and enjoyable to drive.
Explore Bilstein cars with PASM with Design911
Browse Bilstein cars with PASMfor Porsche at Design911 — from individual parts to complete kits — and find options to suit everyday maintenance, upgrades and full projects.