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Factory-Level Ride Control Restored with Bilstein Precision for PASM-Equipped 911s
The Bilstein is the direct OE replacement front shock absorber for 2005-2012 Porsche 911 models equipped with the factory Porsche Active Suspension Management (PASM) system. If your PASM warning light is on or your front end has lost the composed, precise character that makes the 997 generation legendary, the Bilstein 22-347879 is the correct OEM-specification restoration part.
This DampTronic twintube shock integrates directly with the PASM electronic damping system, maintaining the full functionality of your factory adaptive suspension without adaptation, recoding, or sensor substitution. Bilstein builds this unit to the same tolerances as the original factory-installed component.
Key Features
- Bilstein 22-347879 B4 OE Replacement front shock, designed specifically for PASM-equipped 2005-2012 Porsche 911
- DampTronic electronic damping compatibility, integrates fully with Porsche PASM without modification
- Twintube construction for consistent damping force across the full compression range
- Manufactured to OEM tolerances to restore factory handling characteristics
- Direct bolt-on replacement, no machining, adaptation, or sensor substitution required
- Bilstein quality control and materials matched to the original factory specification
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2005-2012 | Porsche | 911 | Carrera |
| 2005-2012 | Porsche | 911 | Carrera S |
| 2007-2012 | Porsche | 911 | Carrera 4 |
| 2007-2012 | Porsche | 911 | Carrera 4S |
| 2011-2012 | Porsche | 911 | Carrera GTS |
| 2011-2011 | Porsche | 911 | Speedster |
Specifications
| Detail | Value |
|---|---|
| MPN | 22-347879 |
| UPC | 651860965734 |
| Brand | Bilstein |
| Series | B4 OE Replacement |
| Type | DampTronic Twintube Shock |
| Position | Front |
| PASM Compatible | Yes, full integration |
| Fitment Note | Required: PASM-equipped models only |
| Warranty | Bilstein Limited |
What's Included
- 1x Bilstein 22-347879 B4 OE Replacement DampTronic front shock absorber
- All mounting hardware
About Bilstein
Bilstein has been manufacturing performance and OE-quality shock absorbers in Germany since 1954 and is an original equipment supplier to Porsche, BMW, Mercedes-Benz, and other premium European automotive brands. The B4 OE Replacement line is engineered to restore original factory handling characteristics, using the same materials and processes as the OEM units Bilstein supplies directly to vehicle manufacturers.
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Frequently Asked Questions
What is the Bilstein 22-347879?
The Bilstein 22-347879 is the B4 OE Replacement DampTronic twintube front shock absorber for the 2005-2012 Porsche 911 equipped with the factory PASM (Porsche Active Suspension Management) adaptive damping system. It replaces the original shock with full electronic damping integration intact.
What does DampTronic mean on the Bilstein 22-347879?
DampTronic is Bilstein's designation for electronically controlled shock absorbers that integrate with factory adaptive suspension systems. The 22-347879 connects to the Porsche PASM control module and responds to PASM mode commands exactly as the original OEM shock does.
Will the Bilstein 22-347879 work on a 911 without PASM?
No. The 22-347879 is designed specifically for PASM-equipped Porsche 911 models. If your 911 does not have the PASM factory adaptive suspension option, you need a different Bilstein part number matched to the non-PASM front shock specification.
Is this a left or right shock?
The Bilstein 22-347879 is a front shock absorber; confirm left and right part numbers separately with your Porsche VIN or a Bilstein fitment guide, as the 997 generation may use side-specific front shock assemblies depending on trim configuration.
What Porsche 911 trims does the 22-347879 fit?
The Bilstein 22-347879 fits PASM-equipped variants of the 2005-2012 Porsche 911, including the Carrera, Carrera S, Carrera 4, Carrera 4S, Carrera GTS, and Speedster, provided those vehicles were optioned with the factory PASM adaptive damping system.
How do I know if my Porsche 911 has PASM?
PASM can be confirmed by checking your original window sticker, CarFax option codes, or by locating the PASM switch on the center console. If your vehicle has PASM, there will be a dedicated dash indicator and a PASM mode button. Your Porsche dealer can also confirm PASM via VIN lookup.
Does the Bilstein 22-347879 require a wheel alignment after installation?
Yes. Any front shock replacement on a 2005-2012 Porsche 911 should be followed by a full four-wheel alignment to restore factory camber, caster, and toe specifications. This is true even for direct OEM-replacement units like the 22-347879.
What is the warranty on the Bilstein 22-347879?
Bilstein provides a limited warranty on the 22-347879 B4 OE Replacement shock. Coverage specifics depend on the point of purchase; contact Bilstein directly or your installer for warranty claim procedures.
Installation Instructions
- Safely lift the 2005-2012 Porsche 911 on a lift and support the vehicle securely
- Remove the front wheel on the side being serviced
- Disconnect the PASM sensor/connector from the existing shock absorber
- Unbolt the lower shock mount from the control arm and upper mount from the strut tower
- Remove the original 911 front shock assembly
- Install the Bilstein 22-347879 in the reverse order, torquing all fasteners to Porsche factory specification
- Reconnect the PASM sensor connector to the new 22-347879 shock
- Reinstall the wheel, lower the vehicle, and bounce test all four corners
- Perform a full four-wheel alignment to factory specification before driving
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