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Your Vehicle
Porsche // 991 (911) MK2 2016-2019 // 991.2 Targa 4 3.0L (370 Bhp) 2016-19
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- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
SET OF 2
We strongly recommend replacing coil springs in pairs.
Fits:
Porsche 991.1 Carrera 4 / 4S 2012 - 2016
Porsche 991.1 Targa 4 / 4S 2012 - 2016
Porsche 991.2 Carrera 4 / 4S 2016 - 2019
Porsche 991.2 Targa 4 / 4S 2016 - 2019
* for cars Electronic damper control for PASM and PDCC (option code: 352)
* for cars "PASM" electronic damper control (option code: 475)
* for cars PASM w/o lowering (option code: 477)
Diagram ref no 7
This spring set supports the full front axle load and controls suspension movement during braking, acceleration, and cornering. Replacing both front springs together ensures even load distribution, symmetrical ride height, and predictable handling characteristics.
Installed between the lower control arms and front strut assemblies, the coil springs compress and rebound with suspension travel. Working together as a matched pair, they absorb road impacts, stabilise the vehicle body, and help maintain consistent tyre contact for confident steering response and ride comfort.
Coil springs weaken and sag over time due to constant load, mileage, and road conditions. Replacing only one spring can result in uneven ride height and compromised handling. Installing a pair restores correct suspension geometry, factory stance, and predictable driving dynamics
When to replace:
• Front ride height appears uneven or sagging
• Increased body roll or reduced handling precision
• Visible corrosion, cracks, or spring fatigue
• During front shock or strut replacement
• As part of a front suspension refresh
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99134353131504
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
The springs are priced / boxed as a pair.
Identification paint coloured marking Pure White / Zinc Yellow
Fits:
Porsche 991.1 Carrera 4 / 4S 2012 - 2016
Porsche 991.1 Targa 4 / 4S 2012 - 2016
Porsche 991.2 Carrera 4 / 4S 2016 - 2019
Porsche 991.2 Targa 4 / 4S 2016 - 2019
* for cars Electronic damper control for PASM and PDCC (option code: 352)
* for cars "PASM" electronic damper control (option code: 475)
* for cars PASM w/o lowering (option code: 477)
Diagram ref no 7
AA genuine Porsche front suspension coil spring, manufactured to OEM standards for material quality, dimensional accuracy, and durability. This spring is designed to integrate seamlessly with factory dampers and suspension components.
The coil spring supports the front axle load and controls vertical suspension movement during braking, acceleration, and cornering. It helps maintain correct ride height, balanced weight distribution, and predictable handling response.
Installed between the lower control arms and front strut assemblies, the coil springs compress and rebound with suspension travel. Their sport-tuned spring rates work in harmony with Porsche dampers to absorb road inputs while maintaining increased stability, steering precision, and performance-oriented ride characteristics.
Over time, constant load, aggressive driving, and road impacts can cause springs to weaken or sag, affecting suspension geometry and performance. Replacing worn springs restores factory ride height, handling balance, and the sharp driving characteristics Porsche intended.
When to replace:
• Front ride height appears lower or uneven
• Noticeable increase in body roll or reduced handling precision
• Springs show corrosion, cracks, or fatigue
• As part of a sports suspension refurbishment or alignment correction
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99134353131504
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
Sold individually – two springs are required per front axle.
We strongly recommend replacing coil springs in pairs.
Fits:
Porsche 991.1 Carrera 4 / 4S 2012 - 2016
Porsche 991.1 Targa 4 / 4S 2012 - 2016
Porsche 991.2 Carrera 4 / 4S 2016 - 2019
Porsche 991.2 Targa 4 / 4S 2016 - 2019
* for cars Electronic damper control for PASM and PDCC (option code: 352)
* for cars "PASM" electronic damper control (option code: 475)
* for cars PASM w/o lowering (option code: 477)
Diagram ref no 7
This coil spring supports one front corner of the vehicle, managing suspension compression and rebound during braking, acceleration, and cornering. It helps maintain proper ride height and contributes to stable, predictable handling.
Installed between the lower control arm and the front strut assembly, the spring compresses and expands with suspension travel, absorbing road impacts and controlling body movement. Correct spring performance is essential for maintaining tyre contact, steering accuracy, and overall ride comfort.
Over time, coil springs can weaken or sag due to constant load, mileage, and road conditions. A worn spring can alter ride height and suspension geometry, affecting handling and tyre wear. Replacing tired springs restores factory-style suspension balance and driving confidence.
When to replace:
• Front ride height appears uneven or sagging
• Increased body roll or reduced handling precision
• Visible corrosion, cracks, or spring fatigue
• During front shock or strut replacement
• As part of a front suspension refresh
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99134353131504
The product you are viewing cross references to these numbers
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
Restore the correct front ride height, suspension control and chassis response of your Porsche with this OE Match Front Coil Spring Kit for vehicles equipped with PASM (Porsche Active Suspension Management).
Kit Contents:
x2 Front Coil Springs (99134353131504/1)
x2 Concave Washer (9P1412103/1)
x2 Bellow (9P1412137A/1)
x2 Bump Stop (99134330103/1)
x2 Top Mount Underlay (9P1412149/1)
x2 Compensation Washer (9P1412269/1)
x2 Mount Bearing (99134350103/1)
x2 Top Nut (PAF00855000)
Fits:
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
Designed for compatible Porsche applications with PASM, this kit provides replacement components for the front spring assembly, making it ideal for repairing worn, corroded or damaged suspension components as part of a comprehensive front suspension overhaul.
The front coil springs support the weight of the vehicle while allowing the wheels to move over bumps and uneven road surfaces. Working together with the PASM-controlled dampers and associated suspension components, the springs help maintain the correct ride height, suspension geometry, steering response and overall chassis balance.
PASM electronically adjusts damper characteristics according to driving conditions and the selected driving mode. However, the system still depends on mechanically sound springs and mounting components. A weakened, sagging or broken spring can compromise suspension geometry and prevent the chassis from performing as intended.
Replacing deteriorated components with this OE Match Front Coil Spring Kit with PASM helps restore controlled suspension movement, correct vehicle stance and predictable handling.
What This Product Does:
- Support the weight of the front of the vehicle.
- Maintain the specified front ride height.
- Allow controlled suspension movement.
- Work correctly alongside the PASM dampers.
- Maintain appropriate front suspension geometry.
- Support precise steering response.
- Help maintain front-end stability.
- Control body movement in conjunction with the dampers.
- Support stable braking and cornering.
- Maintain consistent tyre contact with the road.
- Replace worn or damaged front spring components.
- Restore the mechanical foundation required for effective PASM operation.
- Provide an OE Match replacement solution for compatible Porsche applications.
Symptoms Of Wear Or Failure:
- Broken or fractured spring coils.
- Front of the vehicle sitting lower than normal.
- One front corner sitting lower than the other.
- Uneven ride height.
- Excessive suspension sag.
- Reduced ground clearance.
- Knocking or clunking from the front suspension.
- Metallic noises when travelling over bumps.
- Noise during steering.
- Spring moving within its seat.
- Suspension bottoming out.
- Increased body movement.
- Reduced steering precision.
- Unsettled handling.
- Vehicle pulling or feeling unstable.
- Uneven or accelerated tyre wear.
- Visible corrosion on the springs.
- Damaged spring coating.
- Deteriorated spring seats or mounting components.
Why Replacement Matters:
- Coil springs are structural suspension components responsible for supporting the vehicle's weight and maintaining the intended ride height.
- A severely fractured spring may also move from its intended seating position and potentially interfere with surrounding components.
- Replacing defective springs helps restore safe, controlled and predictable suspension behaviour.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SUSPENSIONKIT991.2.C4.PASM-FR
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
