Porsche 996 3.4 Cooling water expansion tank & cap 99610614756

Coolant expansion tank bottle engineered for Porsche 996 models (C2, C4, and GT3 MKI 1997-2000).

This heat-resistant reservoir collects excess engine coolant and maintains optimal fluid levels as temperatures fluctuate throughout the cooling cycle. The tank manages thermal expansion, preventing overheating and coolant loss whilst providing a convenient access point for level checks and top-ups.

Factory tanks deteriorate over time, becoming brittle and prone to cracks, leaks, or deformation from repeated heat cycles and coolant chemistry. A failing expansion tank compromises system pressure and can lead to coolant loss and engine damage if left unaddressed. This replacement restores proper containment and system integrity, preserving your engine's reliability and longevity.

Replace your tank if you notice visible cracks, leaks, coolant seepage, fluctuating fluid levels, brittle or discoloured plastic, warping, swelling, pressure issues, or frequent top-ups required.

OEM reference: 99610614756 (also compatible with 99610614753, 99610614754, 99610614755).

OE match version doesn't include the cap