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Moroso Cooling System Expansion Tanks

4.7 out of 5 stars 106 Customer Reviews

These expansion tanks are perfect for cars with low-mount radiators to provide a convenient filling location and to bleed off unwanted air. Versions are now available with rugged 6061-T6 billet aluminum filler necks welded to the tank to withstand the continuous removal and installation of the cap. They're 100 percent pressure- tested to eliminate leaks, and they accept a standard-size radiator cap (not included).

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Moroso Cooling System Expansion Tanks for 1999-2005 MIATA - 63781

Coolant Tank, Expansion, Recirculating, Bolt-in, Aluminum, Natural, Mazda, 1.8L, Each

Part Number: MOR-63781

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Mar 4, 2026 if ordered today

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Estimated Ship Date: Mar 4, 2026 if ordered today

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