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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram

DISPLAYING 1 to 2 (of 2 products)
22-147
Product Information
Product Information
Bilstein Original Equipment Shock Absorber

Bilstein Replacement for the Original Spec

Fits cars:
Porsche 997 C4 / C4S - Cars with Standard Chassis (Option code: I029)

Please Note:
Price is for each damper you will need to buy 2

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Related, superseded, cross reference or alternative numbers for comparison.

22-147
22-147493
22-147509
99734304304
99734304306
99734304308
99734304309
99734304904
99734304404
99734304406
99734304408
99734304409
99734305004

The product you are viewing cross references to these numbers
22-1475
Product Information
Product Information
Bilstein Original Equipment Shock Absorber.

Bilstein Replacement for the Original Spec

Fits:
Porsche 997 C4 3.6L Carrera
Porsche 997 C4 S 3.8L Carrera
Cars with SPORT chassis (Option code: I030/I480)
Without PASM

Fits cars:
Porsche 997 C4 / C4S - Cars with SPORT chassis (Option code: I030/I480)

Please Note:
Price is for each damper you will need to buy 2

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.

22-1475
22-147516
22-147523
99734304305
99734304307
99734304405
99734304407
99734304408
99734304308

The product you are viewing cross references to these numbers
DISPLAYING 1 to 2 (of 2 products)
About Bilstein standard

Bilstein B4 Standard

At Design911, Bilstein B4 Standard shock absorbers are the go-to choice when you want to restore the original ride comfort and control of your Porsche without changing its character. Designed as a direct replacement for factory dampers, Bilstein B4 units closely replicate the feel of the original suspension while using Bilstein’s proven damper technology, making them ideal for everyday Porsche road use.

Why do Bilstein Standard shock absorbers matter?

Bilstein B4 Standard dampers are all about bringing a used Porsche back to how it should feel from the driver’s seat. Over time, factory shocks lose their ability to control body movements smoothly, which can leave the car feeling loose, bouncy or less precise. Choosing a quality OEM-style replacement like Bilstein B4 helps you regain predictable behaviour and comfort without turning the car into a stiff, track-focused setup.

  • Help restore a factory-fresh, well-controlled ride on your Porsche
  • Support predictable, consistent handling in normal road driving
  • Reduce typical worn-damper symptoms such as bounce and float
  • Offer an OEM-style solution that suits standard suspension setups

Common options & kits

Individual replacement parts Specific dampers for front or rear axles, allowing you to address one area at a time if needed. These suit owners tackling localised issues such as a leaking shock on one axle while keeping the overall setup close to factory.

  • Ideal for targeted repairs when one end of the car needs attention
  • Lets you replace only the parts that are worn or leaking
  • Can be combined with existing, still-serviceable components

Matched sets or pairs Front or rear axle pairs of Bilstein B4 dampers, ensuring both sides are renewed together. This is the most common approach for maintenance, giving a more balanced, consistent result.

  • Both sides on an axle are refreshed at the same time
  • Helps avoid uneven damping and inconsistent feel
  • A sensible choice during routine suspension work

Complete kits Packages that may combine Bilstein B4 dampers with associated parts such as mounts, bump stops or hardware, depending on the application. These are useful when you want to refresh more of the suspension in one go.

  • All specified components gathered into a single package
  • Saves time compared with sourcing each item individually
  • Well suited to higher-mileage Porsche models or larger refresh jobs

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.

  • Bilstein Porsche Bilstein suspension has a long-standing reputation for bringing together comfort and control. The Bilstein B4 range is built around the idea of replicating the original ride characteristics of standard Porsche suspension using high-quality components and carefully tuned damping. This philosophy sits behind the Bilstein options for Porsche models available at Design911.

When should you review or replace your Bilstein B4 Standard shock absorbers?

Checking standard-type dampers such as the Bilstein B4 on your Porsche at sensible intervals helps you catch wear or age-related decline before it noticeably affects comfort or control. As mileage builds up, internal components and seals can wear, and the damper may no longer manage body movements as cleanly as it once did.

  • Existing dampers show signs of wear such as fluid leaks or corrosion
  • You experience bouncing, nose dive, floaty ride or uneven tyre wear
  • The car feels less settled over bumps compared with how it used to
  • You are carrying out wider suspension work and want everything to feel consistent

If any of these apply, it is a good time to review your standard suspension components and consider Bilstein B4 replacements so your Porsche stays reassuring and comfortable in everyday use.

Explore Bilstein B4 Standard suspension with Design911

Browse Bilstein standard dampers for Porsche at Design911 — from individual units to matched sets and kits — and find options that suit routine maintenance, higher-mileage refreshes and sympathetic restoration of your car’s original road manners.

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