Description
xShop Now Genuine Porsche Gas-Pressure Spring Online – Part 99151155100
The Genuine Porsche Gas-Pressure Spring 99151155100 is designed to support and control the opening and closing movement of the front hood (frunk) in selected Porsche models. This component, also known as a hood lift support or gas strut, ensures the hood stays securely open while you access the storage compartment or perform maintenance.
Manufactured by Porsche, this gas-pressure spring is built according to original factory specifications. It delivers balanced lifting force and controlled damping to prevent sudden drops or weak hood support. Over time, worn gas springs may lose pressure, causing the hood to fall unexpectedly or not stay open properly. Replacing it with a genuine OEM Porsche part restores proper functionality and safety.
This support cylinder is engineered for precise fitment. There is no need for modification, trimming, or adjustment. It installs directly in place of the original part and aligns correctly with factory mounting points on both left and right positions.
At Europeanautospares, we supply authentic Porsche components that maintain original engineering standards. Using genuine parts ensures consistent performance, durability, and long-term reliability, especially for high-performance vehicles where even small components play an important role.
The internal gas pressure and seal quality are designed to withstand repeated opening cycles, temperature changes, and daily usage. Whether your vehicle is driven regularly or stored for performance driving, this OEM Porsche gas-pressure spring maintains stable lifting support throughout its service life.
You can order this product not only within the UAE but also online from anywhere in the world. We provide secure packaging and reliable international delivery.
Specifications
- Brand: Porsche
- Part Number: 99151155100
- Product Type: Gas-pressure spring / Hood lift support
- Other Names: Lift Cylinder, Hood Lift Support, Gas Pressure Spring
- Position: Left, Right
- Condition: New
- Fitment Type: Direct replacement
- Application: Front hood (frunk) support system
-
Manufacturing Standard: Porsche factory specification
Why Choose European Auto Spares
Factory-Approved Porsche Quality
All parts supplied by Europeanautospares meet original factory standards. This ensures correct pressure strength, reliable sealing, and long-lasting performance.
Accurate Direct Fit
The dimensions, mounting points, and internal gas charge are matched to Porsche’s engineering design. This provides smooth lifting and proper hood stability without modification.
Designed for Daily and Performance Use
The internal gas and sealing system is built to handle repeated open-close cycles and temperature variations. This makes it suitable for both regular driving and performance-oriented use.
VIN Compatibility Support
Our specialists can verify part compatibility using your vehicle identification number (VIN), helping you avoid ordering the wrong component.
Worldwide Fulfilment
Although we are based in the UAE, you can order this Genuine Porsche Gas-Pressure Spring 99151155100 online from anywhere. Europeanautospares ensures secure packaging and reliable global shipping.
Maintain Reliable Hood Support Performance
The gas-pressure spring may appear to be a small component, but it plays an important safety role. A weak or worn hood support can suddenly collapse, leading to inconvenience or potential damage. Replacing the part at the right time restores stable hood positioning and prevents strain on hinges or mounting brackets.
Using a genuine OEM Porsche hood lift support maintains original performance characteristics. Proper lifting force ensures the hood opens smoothly and stays in position without excessive force or instability.
At Europeanautospares, we recommend replacing support cylinders in pairs when necessary to maintain balanced lifting performance. Over time, genuine Porsche components contribute to dependable operation and preserve factory engineering standards.
Fitment Details
xPorsche 991 Front Trunk Gas Strut Fitment
Body Components & Front Trunks Specification Matrix — Generation 991.1 & 991.2 Symmetrical Luggage Lid Support Stays
| Model / Generation | Application Details (Body Components & Front Trunks — Luggage Lid Lift Struts) | Year Range |
|---|---|---|
| Porsche 911 Carrera (991.1) | 3.4L Naturally Aspirated Base Coupe / Convertible Symmetrical Front Struts — Balanced Multi-Stage Lift Shock | 2012–2016 |
| Porsche 911 Carrera 4 (991.1) | Widebody AWD 3.4L Naturally Aspirated Front Trunk Lift Support Shocks — Reinforced Track Stability Cylinder | 2013–2016 |
| Porsche 911 Carrera S (991.1) | 3.8L Naturally Aspirated Performance Coupe / Cabriolet Frunk Gas Springs — High-Pressure Damped Balance Rod | 2012–2016 |
| Porsche 911 Carrera 4S (991.1) | Widebody AWD 3.8L Naturally Aspirated Symmetrical Bonnet Lift Dampers — Widebody Hinge Matching Offset Set | 2013–2016 |
| Porsche 911 GTS (991.1) | Power-Kitted Widebody 3.8L NA Front Compartment Counterweight Struts — High-Velocity Fluid Deflection System | 2015–2016 |
| Porsche 911 Targa 4 / 4S (991.1) | Glass-Roof AWD Platform Symmetrical Front Luggage Compartment Stays — Rigid Casing Structural Support Unit | 2014–2016 |
| Porsche 911 Turbo / Turbo S (991.1) | Flagship Twin-Turbo Platform High-Pressure Front Aluminum Lid Support Rods — Specially Calibrated Dynamic Lift Pack | 2014–2016 |
| Porsche 911 GT3 (991.1) | Track-Spec 3.8L High-RPM Lightweight Front Trunk Counterbalances — Motorsport Grade Low-Mass Axis Stays | 2014–2016 |
| Porsche 911 Carrera (991.2) | Gen II Facelift 3.0L Twin-Turbo Base Front Luggage Compartment Struts — Linear-Velocity Low-Friction Cylinder Pack | 2017–2019 |
| Porsche 911 Carrera 4 (991.2) | Gen II Facelift AWD 3.0L Twin-Turbo Symmetrical Front Bonnet Dampers — Enhanced Weather Protection Sleeve Set | 2017–2019 |
| Porsche 911 Carrera S (991.2) | Gen II Facelift 3.0L Twin-Turbo Performance S-Model Frunk Gas Support Stems — Precision Pressure Compression Rod | 2017–2019 |
| Porsche 911 Carrera 4S (991.2) | Gen II Facelift Widebody AWD Twin-Turbo Front Hood Balance Cylinders — Uniform Clamping Load Border Lines | 2017–2019 |
| Porsche 911 GTS / 4 GTS (991.2) | Gen II 3.0L Twin-Turbo Performance Variant Symmetrical Frunk Struts — Track-Calibrated Kinetic Retainer Core | 2017–2019 |
| Porsche 911 Targa 4 / 4S (991.2) | Gen II Facelift Open-Top AWD Mechanical Front Deck Lid Gas Dampers — High-Retention Torsional Shock Units | 2017–2019 |
| Porsche 911 Turbo / Turbo S (991.2) | Gen II 3.8L Twin-Turbo Flagship Front Aluminum Bonnet Balance Units — High-Aperture Pressure-Stiffened Strut Set | 2017–2019 |
| Porsche 911 GT3 / RS (991.2) | Track-Spec Gen II 4.0L Naturally Aspirated Lightweight Front Strut Kits — Monobloc Weight-Reduced Guide Bars | 2018–2019 |
| Porsche 911 GT2 RS (991.2) | Ultimate Track Flagship 3.8L Twin-Turbo (700HP) Symmetrical Front Shocks — ClubSport Carbon Bonnet Counterweights | 2018–2019 |
| Porsche 911 Speedster (991.2) | Limited-Edition 4.0L Open-Top Heritage Front Trunk Support Assemblies — Heritage Calibrated Slow-Stop Stays | 2019 |
Stuttgart Coachwork Engineering & Front Luggage Lid Kinetic Support Notice
This professional-grade, high-pressure gas lift strut assembly, incorporating dual synthetic ball-socket end couplings and an integrated slow-stop internal hydraulic braking zone, is engineered strictly for the front luggage compartment lid (frunk hood) hinge systems of the Porsche 911 (Type 991.1 and 991.2 Facelift) generational lines. Symmetrically mounted inside the structural perimeter water drainage tracks flanking the front luggage tub, these heavy-duty stays provide consistent mechanical counterweight forces. This layout ensures smooth, hands-free extension and holds the forward deck lid securely open during trunk access or fluid servicing.
Critical Material Variations, Newton Force Calibration & Aluminum/Carbon Deformation Warnings: Refinishing specialists, classic car curators, and workshop technicians must observe strict structural engineering details before provisioning parts. **The front luggage deck panels across the 991 platform utilize highly specialized, lightweight material matrices that dictate exact gas charge volumes**. Standard Carrera, Targa, and Turbo models run lightweight aluminum bonnet pressings, while specialized track iterations—including the GT3 RS, GT2 RS, and Speedster variants—frequently feature factory carbon-fiber reinforcement plastics (CFRP) or full carbon-fiber front decks.
Never attempt to install universal multi-fit industrial gas rods, and never mix unmatched part numbers across these hinges. Sourcing a sub-tier aftermarket reproduction stay with uncalibrated internal pressure introduces severe safety and cosmetic component hazards under operation. If the internal nitrogen gas pressure drops below factory thresholds—especially during winter months when ambient freezing temperatures contract the internal gas volume—the cylinders will fail to support the front lid at full extension. This failure causes the hood panel to crash down unexpectedly, risking severe bodily injury to a technician's hands, crushing delicate plastic battery surrounds, or shattering expensive upfront carbon cosmetic trim. Conversely, installing over-charged or incorrect high-force rods applies excessive upward shear force against the soft aluminum or carbon hinge points. This stress over-compresses the panel when closed, permanently bending or warping the lightweight aluminum hood frame, stripping the soft thread inserts inside carbon layups, and throwing the body lines permanently out of index with the front fenders.
Special servicing attention must be noted: if the front trunk lid begins to slow its opening arc, requiring manual lifting assistance past the initial release latch click, the internal nitrogen gas seal has begun to bleed off pressure, rendering both symmetrical cylinders worn out and mandatory to replace as a matched pair.
... In-Bay Extraction, Hood Retention & Socket Clip Resetting Best Practices: Replacing front trunk gas lift stays is a meticulous body-component service task that must be executed on a level workshop bay. **The front luggage lid must be supported completely open at its absolute maximum extension height using an independent, fully padded safety prop stand or non-marring wood block framework. Never rely on one worn remaining factory stay to hold the hood's weight while extracting the opposite side cylinder; removing one stay instantly overloads the remaining shock, causing the aluminum lid to slam shut instantly**.
Establish clean workspace clearance around the upper and lower steel ball-stud mounts. Technicians must utilize a slim, non-tapered flat-blade precision pick or mini-screwdriver to gently slide the semi-circular spring steel retaining bands outward just enough to release the internal locking ring detent. Never fully pry, yank, or discard the spring clip completely off the socket collar housing; if the spring snaps loose and shoots into the deep hidden inner body framework or behind the front luggage tub liner, it is almost impossible to recover without extensive body panel stripping.
Pull the socket head straight out parallel from its mounting studs. Meticulously clean out calcified road-salt film, road dust, and oxidized factory lubricant from the male body ball-stud pins using fine non-metallic detail brushes. Lightly pack the interior cups of the new strut sockets with high-viscosity synthetic lithium grease to guarantee long-term, noise-free mechanical pivot articulation.
Align the new cylinder body so the main pressure tube points upward with the thin piston rod pointing downward in its normal operating orientation. Push the new strut socket straight onto the ball stud until a distinct mechanical snap confirms the spring steel retaining band has latched closed around the ball. Gently slide out your temporary prop support, lower the front lid slowly past halfway to verify the integrated hydraulic dampening zone smoothly brakes the panel acceleration at full extension, and verify completely clean, level body panel alignments along the front fender lines before signing off the vehicle repair registry.
Nitro-Carburized Micro-Polished Carbon Steel Piston Rod
The primary piston rod is precision-machined from high-tensile carbon steel treated with a specialized nitro-carburized chemical surface overlay. This advanced metallurgical process provides outstanding resistance to atmospheric moisture and front trunk washing runoff, minimizes sliding friction coefficients, and protects internal sealing blocks across thousands of opening loops.
Proprietary Multi-Lobe High-Pressure Nitrogen Packing Seal
The main gas cylinder enclosure is hermetically isolated by a specialized, multi-lobe high-resilience synthetic rubber packing block. This internal technical design completely prevents nitrogen gas pressure drop-offs during severe under-hood vehicle storage periods, stops hydraulic oil bleeding, and guarantees a predictable, steady lifting velocity down to extreme winter limits of $-35^{\circ}\text{C}$.
FAQs
xFrequently Asked Questions
It supports the front hood (frunk) and keeps it securely open while allowing smooth and controlled closing.
Yes, it is manufactured according to Porsche factory specifications for direct replacement and accurate performance.
If the hood does not stay open, drops slowly, or requires extra force to lift, the gas-pressure spring may have lost pressure.
In many cases, installation is straightforward, but professional fitting is recommended to ensure correct alignment and safety.
Yes. While we are based in the UAE, you can order online from anywhere in the world, and we provide international shipping.
You can share your VIN with our team at Europeanautospares to confirm correct fitment before purchase.
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xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
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