PORSCHE 99646106002 Convertible Roof Top Hydraulic Pump Motor Cylinder 99756130700

( Manufacturer Part Number: 99646106002 ), ( Part Type: Hydraulic Pump Motor Cylinder ), ( Oe/oem Part Number: 99756130700 ), ( Id: 47b1f034-ffb9-4d0f-96dd-5ec8007ec31f ), ( Interchange: 152-59758 )

Review PORSCHE Convertible Roof Top Hydraulic Pump Motor Cylinder 997 fits 911 2008

The **Porsche 996/997 Convertible Roof Hydraulic Pump Motor Cylinder Assembly** (part numbers **46106002** and **911 997-specific variant **99756130700**) is a precision-engineered component essential for the seamless operation of Porsche s iconic Cabriolet models, including the 996-generation Boxster and Cayman as well as the 997-generation 911 GT3 and GT3 RS convertibles. This critical hydraulic unit is responsible for deploying and retracting the soft-top roof with fluid efficiency, ensuring smooth, silent, and reliable performance under the demanding conditions of high-speed driving, aggressive cornering, and prolonged use. Crafted from high-grade materials, the pump motor cylinder assembly integrates a robust **hydraulic motor** (often a **DC or brushless electric motor**) paired with a **precision-machined cylinder block**, which houses the hydraulic fluid reservoir and piston mechanism. The system operates on a closed-loop principle, where the motor drives a **gear or vane pump**, pressurizing hydraulic fluid to extend or retract the roof s fabric and steel framework with minimal effort. For the **997 911 models**, the assembly may incorporate additional refinements, such as **enhanced sealing technology** to prevent fluid leaks under extreme G-forces or **optimized motor torque** to accommodate the heavier, more rigid roof mechanisms introduced in later iterations. Compatibility is paramount, as this part is designed exclusively for Porsche s **996 (1999 2005) and 997 (2005 2012) platforms**, with the **99756130700** variant specifically tailored to the 911 s distinct roof architecture, which often features a more robust hydraulic system to support the car s sportier handling dynamics. Whether restoring a classic Cabriolet or upgrading an existing system, this component represents a fusion of Porsche s engineering legacy and modern hydraulic precision, ensuring that the convertible experience remains as fluid and exhilarating as the open-air driving it enables.

### **Pros and Cons of Buying a Porsche 996/997 Convertible Roof Hydraulic Pump Motor and Cylinder (Part Numbers: 46106002, 911 99756130700, 99756130700)**

Porsche 996 and 997 convertible models (particularly the 911 Cabriolet) rely on a hydraulic roof mechanism that includes a **pump motor, cylinder, and associated components** (e.g., 46106002 for the pump, 911 99756130700 for the cylinder). These parts are critical for smooth, reliable operation of the soft-top. Below is a detailed breakdown of the advantages and disadvantages of purchasing these components, followed by a conclusion and recommendation.

---

### **Pros of Buying New or High-Quality Replacement Parts**

1. **Reliability and Performance**

- Original Porsche parts (or high-quality aftermarket equivalents) are engineered to Porsche s exacting standards, ensuring proper function, durability, and compatibility with the vehicle s hydraulic system.

- A well-functioning roof mechanism prevents leaks, erratic movement, or complete failure, which can be dangerous and inconvenient.

2. **Warranty and Support**

- Purchasing from an authorized Porsche dealer or a reputable aftermarket supplier (e.g., Porsche Parts Direct, Porsche Specialty Auto Parts, or trusted online retailers) often includes warranties, ranging from 12 months to lifetime coverage for certain components.

- Authorized parts come with Porsche s technical support, ensuring proper installation guidance and troubleshooting if issues arise.

3. **Compatibility and Fit**

- Porsche parts are designed to fit seamlessly with the 996 and 997 models, reducing the risk of misalignment or improper function. Aftermarket parts from reputable brands (e.g., ACDelco, Bosch, or specialized Porsche suppliers) are also engineered to match OEM specifications.

- The pump motor (46106002) and cylinder (99756130700) work in tandem, and using genuine or high-quality replacements ensures they coordinate correctly, avoiding premature wear or failure.

4. **Long-Term Cost Savings**

- While new parts may have a higher upfront cost, they reduce the likelihood of repeated failures or damage to adjacent components (e.g., hoses, seals, or the roof mechanism itself). This can save money in the long run compared to cheap or counterfeit parts that fail quickly.

- Preventative replacement (e.g., if the pump is showing signs of wear) can avoid a complete roof failure, which can be costly to repair.

5. **Resale Value Protection**

- Maintaining the convertible roof with genuine or high-quality parts preserves the vehicle s value, especially for enthusiasts or collectors who prioritize originality and functionality.

6. **Ease of Installation**

- Porsche parts are designed for straightforward installation, often requiring minimal additional tools or modifications. Many dealers or mechanics offer installation services, reducing the hassle for the owner.

7. **Safety**

- A faulty roof mechanism can pose safety risks, such as the roof failing to close properly or the motor seizing mid-operation. Replacing worn parts with quality components eliminates these hazards.

---

### **Cons of Buying Replacement Parts**

1. **High Cost**

- The **hydraulic pump motor (46106002)** can cost between **$800 $1,500** depending on the source.

- The **cylinder (99756130700)** may range from **$600 $1,200**.

- Labor for installation (if not DIY) can add **$200 $500** or more, depending on the shop.

- Aftermarket parts are cheaper (often **30 50% less**), but quality varies widely.

2. **Potential for Counterfeit or Low-Quality Parts**

- Fail prematurely (e.g., pump motor burning out within months).

- Leak hydraulic fluid, damaging seals or the roof mechanism.

- Not fit properly, leading to misalignment or erratic operation.

- Always verify the seller s reputation and part authenticity (e.g., check for Porsche Part Number (PPN) compatibility, certifications, or return policies).

3. **Complexity of the System**

- The convertible roof hydraulic system includes **hoses, seals, valves, and sensors** that must be inspected during replacement. Neglecting these can lead to recurring issues.

- If the pump or cylinder is replaced but other components (e.g., a clogged filter or worn seals) are ignored, the new parts may fail quickly.

4. **DIY Difficulty**

- Disassembling the roof mechanism.

- Draining and flushing the hydraulic system.

- Properly bleeding the system to avoid airlocks.

- Recalibrating sensors (if applicable).

- Mistakes can lead to leaks, improper sealing, or electrical issues, voiding warranties or causing further damage.

5. **Limited Availability of Aftermarket Parts**

- Not all aftermarket suppliers carry Porsche-specific hydraulic parts. Some brands may offer generic replacements that don t match the exact specifications of the 996/997 system, risking compatibility issues.

6. **Time and Downtime**

- Even with professional installation, replacing these parts requires removing the roof, which can take **4 8 hours** of labor. This means the car is out of commission for at least a day.

- DIYers may spend **multiple hours** troubleshooting or reworking the installation, adding stress and frustration.

7. **Potential for Overkill**

- If the roof mechanism is still functional but slow or slightly noisy, some owners may opt for cheaper fixes (e.g., lubricating seals) rather than a full replacement. A partial repair could be more cost-effective in mild cases.

---

### **Conclusion**

Buying **high-quality replacement parts** for the Porsche 996/997 convertible roof hydraulic system (pump motor 46106002, cylinder 99756130700) is justified when:

- The current parts are **failing, leaking, or causing erratic operation**.

- You prioritize **long-term reliability, safety, and warranty coverage**.

- You have the **budget** for OEM or premium aftermarket parts and are willing to invest in professional installation if needed.

However, if the system is **only mildly degraded** (e.g., slow closing, minor leaks), exploring **cheaper fixes** (e.g., seal replacement, hydraulic fluid flush) or **aftermarket alternatives** (from trusted brands like **Porsche Specialty Auto Parts, ACDelco, or Bosch**) may be a more economical approach.

For most serious Porsche owners, **the peace of mind and reliability of OEM or high-quality aftermarket parts outweigh the cost**, especially since a failed roof mechanism can lead to far more expensive repairs down the line.

---

### **Recommendation**

1. **Diagnose the Issue First**

- Before purchasing parts, confirm the exact problem (e.g., pump failure, cylinder leak, electrical issue). A mechanic or Porsche specialist can diagnose whether the pump motor (46106002) or cylinder (99756130700) is the root cause.

- Check for **hydraulic fluid leaks**, **noise from the pump**, or **slow/erratic roof movement**.

2. **Choose the Right Parts**

- **For OEM reliability**: Purchase from an **authorized Porsche dealer** or **Porsche Parts Direct**. Expect to pay a premium but benefit from warranty and support.

- **Porsche Specialty Auto Parts** (often carries OEM-equivalent aftermarket parts).

- **ACDelco** or **Bosch** (for hydraulic components).

- **Porsche 911-specific suppliers** (e.g., **911Crew, Porsche Parts Warehouse**).

- Avoid **eBay or unknown sellers** unless you verify the parts are genuine and come with a warranty.

3. **Consider Professional Installation**

- Unless you have **mechanical experience with hydraulic systems**, have a **Porsche specialist** install the parts. Improper installation can lead to leaks, airlocks, or electrical issues.

- If DIYing, research **step-by-step guides** (e.g., from **Porsche Club forums, YouTube tutorials**) and be prepared for potential challenges.

4. **Maintain the System**

- After replacement, **flush the hydraulic system** and **check fluid levels** regularly.

- Inspect **hoses, seals, and sensors** during routine maintenance to prevent future failures.

5. **Budget for Contingencies**

- Allocate extra funds for **additional components** that may need replacement (e.g., seals, hoses) or **labor costs** if unexpected issues arise.

**Final Verdict

Details:

Convertible Roof Top Hydraulic Pump Motor Cylinder Strut Oem Porsche 911 Turbo 997 2008. Buyers should expect to replace all consumable items with new, roadworthy components as necessary. NOTE TO ALL BUYERS: All used consumable wear components such as tires, fluids, bushings, etc. PORSCHE 911 06-09 997 model , Conv, soft top.

PORSCHE 911 05 997 model, Conv, soft top.

part #: 99646106002 prices

• $325.00-$1500.00

specifications sunrooconvertib:

• for models: 911
• for makes: Porsche
• for years: 2008
• mpn: 99646106002
• part type: Hydraulic Pump Motor Cylinder
• oe/oem part number: 99756130700
• id: 47b1f034-ffb9-4d0f-96dd-5ec8007ec31f
• interchange: 152-59758

seller sunrooconvertib:

• # reviews: 30599
• city: Hamtramck, Michigan
• rating: 99.7%

general sunrooconvertib:

• Exterior Parts Accessories > Roofs, Tops Sunroofs > Hardtops, Roof Panels Parts
• condition: Used

returns sunrooconvertib:

• paid by: Buyer
• time: 30 Days
• policy: Returns Accepted

offer sunrooconvertib:

• options: Ship-to-home
• quantity: 1
• sold: 0
• availability: In Stock
• started: June 9, 2026
• best offers: True

payments sunrooconvertib:

• wallet: Paypal
• credit card: Diners-club
• other

shipping sunrooconvertib:

• service: UPS Ground
• class: Standard
• carrier: UPS
• type: Fixed
• cost: $0.00
• transit: 3-7 Days

Porsche 99646106002 Is Similar To:

• 356-3002-2 4504 World Upholstery Trim Replacement Convetible Top Porsche Speedster Tan Twillfast (16.1% similar) About world upholstery trim always in tune with market trends, has a reputation for manufacturing high quality components ranging from pre-sewn seat and carpeting to side panels convertible tops, classic cars including those made by alga romeo, BMW, Ferrari, jaguar porsche, as well Mercedes-Benz. ...(March 8th, 2018)
• 644.561.881.00 Porsche 356 Cabriolet Top (27.7% similar) It is 36 in length . Heres a new aluminum nailers strip that is installed above the rear window on top of porsche 356 cabriolet, from A-T2, b, and c sc. Made of polished aluminum, it has 10 embedded nails. Its purpose is to cover the staples used in top installation. Free domestic shipping...(January 13th, 2018)
• 64450305100 Porsche Used Original Genuine Coupe Roof Panel Without Sunroof (28% similar) Please see pictures. Unit has lots of dents dings and requires a complete restoration. Weir spreeing porsche. No surprises here...(December 20th, 2018)
• 64456300500 Porsche Original Cabriolet Hard Top Genuine (31.7% similar) Missing rear window and latches. A few dents present as shown. Some rust repair needed along bottom edge below quarter windows. Original genuine porsche hard top for cabriolet model's. Both quarter window assembles included in good condition. Complete headliner with bows still installed...(August 31st, 2018)
• 65-216163-1 Porsche Hard Top Storage Brackets Front For (29% similar) ...(April 20th, 2018)
• 65-216165-1 Porsche Hard Top Storage Brackets Rear Left For (28.2% similar) ...(May 16th, 2018)
• 65-216166-1 Porsche Hard Top Storage (28.6% similar) ...(February 2nd, 2018)
• 65-216662-1 Porsche Targa Top Latch (25.6% similar) ...(June 5th, 2018)
• 65-230152-1 Weltmeister Sunroof Motor Gear For Porsche (27.8% similar) Restore the sun and fresh air driving with new factory parts. Genuine porsche oem part 2-YEAR unlimited mileage manufacturers warranty made in Germany years of enjoying fresh air wears out sunroof gears. And one day your sunroof just quits working. Restore the sun and fresh air driving with new ...(September 23rd, 2018)
• 65-230719-1 Roll Bar Top Vinyl For Porsche Eckler (15.8% similar) Unlike the expensive factory replacement, we cut our panels slightly oversize to withstand normal shrinkage and stay looking good forever. Replace it with our new, improved panels...(May 9th, 2018)
• 65-230720-1 Vinyl Roof Pillar Left For Porsche Eckler (15.4% similar) Unlike the expensive factory replacement, we cut our panels slightly oversize to withstand normal shrinkage and stay looking good forever. Replace it with our new, improved panels...(May 9th, 2018)