Description
xShop Now Genuine Porsche Lid Online – Part 99610644704
The Genuine Porsche Lid 99610644704 is a factory‑original coolant expansion tank cap made specifically for Porsche vehicles. It seals the coolant reservoir and holds the correct pressure inside the cooling system, which is vital for efficient heat management and engine performance.
When the engine heats up, the coolant expands. Without a reliable cap that holds pressure, the coolant can boil, air can enter the system, or the engine can overheat. A worn or faulty cap is a common cause of these issues. Replacing it with this genuine Porsche lid ensures stable temperature control, correct pressure balance, and dependable long‑term function.
This cap also supersedes earlier versions such as 99610644700, 99610644701, 99610644702, and 99610644703, meaning it replaces those parts and is the correct updated version.
You can purchase this part online from sellers around the world, not just in the UAE. Europeanautospares provides worldwide shipping so owners globally can get this genuine Porsche part.
Specifications
- Brand: Genuine Porsche
- Part Number: 99610644704
- Product Type: Coolant Expansion Tank Cap
- Condition: New, genuine OE part
- Fitment Type: Direct replacement
- Application: Cooling system pressure/coolant reservoir lid
- Manufacturing Standard: Porsche factory specification
- Replaces: 99610644700, 99610644701, 99610644702, 99610644703
Why Choose European Auto Spares
Exact Factory Quality
This lid is produced to the same specifications and materials used by Porsche in original manufacturing. It fits and functions exactly as intended.
Reliable Coolant Pressure Control
Maintaining correct pressure helps keep coolant from boiling, reduces air entering the system, and supports consistent engine temperature.
Long‑Lasting and Durable
Compared to generic aftermarket caps, this genuine Porsche part is designed to endure repeated heat cycles and coolant exposure over long periods.
Worldwide Availability
You can order the Genuine Porsche Lid 99610644704 online from sellers worldwide. It’s not limited to local availability in one region. Europeanautospares ensures fast and secure delivery wherever you are.
Need Help Finding the Right Porsche Part?
We are based in Dubai and serve customers worldwide. Connect with our auto specialists for expert support with part verification, compatibility, pricing, and warranty details. Our team can source the correct Porsche spare parts and deliver them directly to your doorstep, locally or anywhere across the globe.
Installation & Maintenance Notes
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Installing this lid is simple: remove the old cap and secure the new one.
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Best replaced during coolant service or if you notice signs of overheating or coolant loss.
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Always double‑check fitment before purchase to avoid returns or errors.
Maintain Your Cooling System Performance
A coolant expansion tank cap may seem like a small component, but it plays a critical role in maintaining your engine’s thermal balance. A faulty cap can lead to overheating, coolant loss, air ingress, and long‑term engine damage, which can be expensive to repair.
Using the Genuine Porsche Lid 99610644704 helps ensure your cooling system stays sealed, maintains correct pressure, and supports reliable performance exactly as Porsche engineered it. Europeanautospares recommends replacing worn caps during routine maintenance to keep optimal system performance.
Fitment Details
xPorsche 996 / 986 Coolant Bleeder Port
Thermal Management Specification Matrix — Cooling System Service Access Points
| Model / Generation | Application Details (Coolant Pipe / Bleeder Port Cover) | Year Range |
|---|---|---|
| Porsche 911 (996) | Coolant Pipe / Bleeder Port Cover | 1999–2005 |
| Porsche Boxster (986) | Coolant Pipe / Bleeder Port Cover | 1997–2004 |
Cooling System Service Engineering Notice
The coolant bleeder port cover is a crucial component for the maintenance of the M96 engine's cooling system. Because these vehicles utilize a remote radiator configuration, trapped air is a significant concern during coolant exchanges.
Key Service Considerations:
Key Service Considerations:
- Access Point Integrity: The bleeder port cover houses a small O-ring or seal that is prone to drying out over time, especially given its location near the engine's heat sources. If you notice a faint sweet smell of coolant after driving, this port cover is the first place to inspect for minor weeping.
- System Bleeding: Properly bleeding the M96 cooling system is essential. The bleeder valve should be used in conjunction with a vacuum-fill tool whenever possible. Avoid excessive force when opening or closing the bleeder port cover, as the plastic threads are susceptible to stripping.
- Thermal Cycling: Because this cap experiences extreme temperature fluctuations, ensure any replacement part is an OEM-grade component capable of withstanding the pressurized environment of the cooling circuit.
- Seal Replacement: Whenever the cap is removed for system maintenance, it is best practice to replace the internal seal/O-ring to ensure a perfect pressure seal.
FAQs
xFrequently Asked Questions
It seals the coolant reservoir and maintains proper pressure so the cooling system works efficiently and prevents overheating.
Yes, this is a factory‑made Porsche part, not an aftermarket copy.
A failing cap can allow coolant to boil, let air enter the system, cause overheating, or lead to gradual coolant loss.
Yes, replacing this cap is straightforward and doesn’t usually require special tools. However, make sure it fits your vehicle first.
It fits many Porsche 996 and early 997 models. Always verify your model year and engine type before ordering.
Found It Cheaper.?
xShipping & Return
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.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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