Engine coolant expansion tank kit. Porsche 996 2001 >> / 997.1 / 997.2  ❭  COOLTANKKIT997.1

Engine coolant expansion tank kit.
This kit includes a direct-fit coolant expansion tank, pressure cap, long-life red antifreeze, and a coolant level sensor, giving you the essential components needed to refresh the coolant reservoir side of the engine cooling system with parts that match the original equipment specifications.

Fits:
Porsche 996 3.6L C2 / C4 / C4S 2001 - 2005
Porsche 996 Turbo 2001 - 2005
Porsche 996 GT2 2001 - 2005
Porsche 996 GT3 MKII / GT3 RS 2001 - 2005
Porsche 997.1  2005 - 2008 all models
Porsche 997.2 2009 - 2012 all models

Diagram ref no 1, 3, 4, 5, 13, 14, 17.

This OE Match kit is designed for Porsche vehicles that use part number 99610615704 for their coolant expansion reservoir, commonly fitting Porsche 911 models (996 & early 997 series). Always check your vehicle’s specific model year and engine to confirm fitment before purchasing.

This Engine Coolant Expansion Tank Kit combines the essential OE Match components needed for proper cooling system service:

• 99610615704/1 × 1 – OE Match Coolant Expansion Tank incl. Cap (99610644704): Precision-matched coolant reservoir engineered to replicate the original Porsche expansion tank for the 911 (996/997) cooling system. Correct pressure cap that seals the expansion tank and helps maintain proper system pressure to optimise coolant performance.

•  00004330194 × 5 – Comma Antifreeze 1 L Red Concentrate (5-Year Protection): High-quality coolant concentrate designed for long life protection against corrosion, freeze, and boil when mixed with distilled water.

Together, these components ensure your cooling system is refreshed with quality parts that closely match the original performance and characteristics.

This kit helps restore your cooling system’s ability to manage the expansion and contraction of engine coolant as temperature fluctuates. The expansion tank safely captures excess coolant, the pressure cap maintains system integrity and boiling point, and the long-life antifreeze protects internal components from corrosion, overheat or freeze damage.

Over time, the original coolant expansion tank and cap can become brittle, discoloured, cracked or weakened due to repeated heat cycles and coolant exposure. A failing tank may allow coolant loss or air entry into the system, while old or depleted coolant loses protective properties. An OE Match tank and cap restore proper coolant containment and pressure control - and replenishing the coolant with high-quality antifreeze extends protection against corrosion and temperature extremes for years.

Replace this kit when you notice any of the following: 
•  Cracks, leaks or deformation in the expansion tank
•  Pressure cap no longer seals or maintains system pressure
•  Coolant appears contaminated, sludgy or past its service life
•  Frequent coolant top-ups are required without visible external leaks.

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COOLTANKKIT997.1

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